{"schemaVersion":3,"id":"CVE-2026-7307","aliases":["CGA-3vqw-rppr-xvwv","CGA-92gf-72rg-5vm9","CGA-f4p6-fjg5-v3gq","CGA-m67r-2m77-7xc8","CGA-m6qv-p455-x3m8","CGA-p3v4-xg44-qwrw","CGA-qhxg-3r2h-84j8","CGA-x9wq-pxvc-j4xv","CGA-2c8c-w76r-gqjv","CGA-4vp5-p3jp-w3vf","CGA-5h3w-j9fr-cvm8","CGA-5m8c-pwgr-4qw3","CGA-66jr-7vrm-r863","CGA-765w-jj6h-9rgp","CGA-8w6q-jgmg-5j4h","CGA-c7hm-76gv-xq4q","CGA-cv2x-4532-j946","CGA-fg79-p3ww-874p","CGA-fxxj-fgfm-f3v4","CGA-hcjh-fj5r-cwhw","CGA-p5c9-q7pp-gmxf","GHSA-p5mv-gj8j-xqgf","BIT-keycloak-2026-7307","CGA-r6h2-x7j8-wx6x","CGA-rjwq-v242-fhpc","CGA-rvp7-3j8m-fv22"],"status":"published","duplicateOf":null,"title":null,"description":"A flaw was found in Keycloak. A remote, unauthenticated attacker can send a specially crafted XML input to the Security Assertion Markup Language (SAML) endpoint. This malicious input can cause high CPU usage and worker thread starvation, leading to a Denial of Service (DoS) where the server becomes unavailable.","dates":{"published":"2026-05-19T10:52:24.684Z","modified":"2026-10-06T16:43:47.490Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Maven","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0101,"percentile":0.6256,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0.26699999999999996,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00743},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00983,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0101,"percentile":0.6256}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00743,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00867,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00983,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0101,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0101,"percentile":0.6256}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-1286","name":"Improper Validation of Syntactic Correctness of Input","description":"The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/1286.html"}],"affected":[{"vendor":"chainguard","product":"keycloak-26.4","name":"keycloak-26.4","label":"keycloak-26.4","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-26.4","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"keycloak-26.4-iamguarded-compat","name":"keycloak-26.4-iamguarded-compat","label":"keycloak-26.4-iamguarded-compat","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-26.4-iamguarded-compat","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"keycloak-26.5","name":"keycloak-26.5","label":"keycloak-26.5","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-26.5","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"keycloak-26.5-iamguarded-compat","name":"keycloak-26.5-iamguarded-compat","label":"keycloak-26.5-iamguarded-compat","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-26.5-iamguarded-compat","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"keycloak-fips-26.4","name":"keycloak-fips-26.4","label":"keycloak-fips-26.4","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-fips-26.4","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"keycloak-fips-26.4-iamguarded-fips","name":"keycloak-fips-26.4-iamguarded-fips","label":"keycloak-fips-26.4-iamguarded-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-fips-26.4-iamguarded-fips","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"keycloak-fips-26.5","name":"keycloak-fips-26.5","label":"keycloak-fips-26.5","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-fips-26.5","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"keycloak-fips-26.5-iamguarded-fips","name":"keycloak-fips-26.5-iamguarded-fips","label":"keycloak-fips-26.5-iamguarded-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-fips-26.5-iamguarded-fips","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"request-9047-keycloak-fips-26.4","name":"request-9047-keycloak-fips-26.4","label":"request-9047-keycloak-fips-26.4","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/request-9047-keycloak-fips-26.4","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"request-9047-keycloak-fips-26.4-iamguarded-fips","name":"request-9047-keycloak-fips-26.4-iamguarded-fips","label":"request-9047-keycloak-fips-26.4-iamguarded-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/request-9047-keycloak-fips-26.4-iamguarded-fips","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"request-9047-keycloak-fips-26.5","name":"request-9047-keycloak-fips-26.5","label":"request-9047-keycloak-fips-26.5","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/request-9047-keycloak-fips-26.5","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"request-9047-keycloak-fips-26.5-iamguarded-fips","name":"request-9047-keycloak-fips-26.5-iamguarded-fips","label":"request-9047-keycloak-fips-26.5-iamguarded-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/request-9047-keycloak-fips-26.5-iamguarded-fips","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"wolfi","product":"keycloak-26.4","name":"keycloak-26.4","label":"keycloak-26.4","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/keycloak-26.4","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"wolfi","product":"keycloak-26.4-iamguarded-compat","name":"keycloak-26.4-iamguarded-compat","label":"keycloak-26.4-iamguarded-compat","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/keycloak-26.4-iamguarded-compat","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"wolfi","product":"keycloak-26.5","name":"keycloak-26.5","label":"keycloak-26.5","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/keycloak-26.5","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"wolfi","product":"keycloak-26.5-iamguarded-compat","name":"keycloak-26.5-iamguarded-compat","label":"keycloak-26.5-iamguarded-compat","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/keycloak-26.5-iamguarded-compat","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"org.keycloak","product":"keycloak-saml-core","name":"org.keycloak:keycloak-saml-core","label":"keycloak-saml-core","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.keycloak/keycloak-saml-core","purlType":"maven","versions":[{"text":"< 26.6.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 26.6.2","eol":null,"hubHref":null},{"vendor":"redhat","product":"build_of_keycloak","name":"build of keycloak","label":"build_of_keycloak","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 26.4, < 26.4.12","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 26.4, < 26.4.12","eol":null,"hubHref":"/vendor/redhat/build_of_keycloak"}],"affectedCount":18,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:19594","label":"access.redhat.com/errata/RHSA-2026:19594","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","WEB"]},{"url":"https://access.redhat.com/errata/RHSA-2026:19595","label":"access.redhat.com/errata/RHSA-2026:19595","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","WEB"]},{"url":"https://access.redhat.com/errata/RHSA-2026:19596","label":"access.redhat.com/errata/RHSA-2026:19596","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","WEB"]},{"url":"https://access.redhat.com/errata/RHSA-2026:19597","label":"access.redhat.com/errata/RHSA-2026:19597","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","WEB"]},{"url":"https://access.redhat.com/errata/RHSA-2026:76128","label":"access.redhat.com/errata/RHSA-2026:76128","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:76129","label":"access.redhat.com/errata/RHSA-2026:76129","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:76130","label":"access.redhat.com/errata/RHSA-2026:76130","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:76132","label":"access.redhat.com/errata/RHSA-2026:76132","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:76134","label":"access.redhat.com/errata/RHSA-2026:76134","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-7307","label":"access.redhat.com/security/cve/CVE-2026-7307","hostname":"access.redhat.com","tags":["VDB Entry","X Refsource REDHAT","WEB","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2476526","label":"bugzilla.redhat.com/show_bug.cgi?id=2476526","hostname":"bugzilla.redhat.com","tags":["Issue Tracking","X Refsource REDHAT","WEB","Vendor Advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7307.json","label":"security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-7307.json","hostname":"security.access.redhat.com","tags":["X Sadp Csaf Vex"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7307","label":"nvd.nist.gov/vuln/detail/CVE-2026-7307","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/keycloak/keycloak/pull/49119","label":"github.com/keycloak/keycloak/pull/49119","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/keycloak/keycloak/commit/be84d28ce4c69c038d542f11405d5ede1d61f4a9","label":"github.com/keycloak/keycloak/commit/be84d28ce4c69c038d542f11405d5ede1d61f4a9","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/keycloak/keycloak","label":"github.com/keycloak/keycloak","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/keycloak/keycloak/releases/tag/26.6.2","label":"github.com/keycloak/keycloak/releases/tag/26.6.2","hostname":"github.com","tags":["WEB"]}],"lineage":{"upstream":[],"downstream":["RHSA-2026:76128","RHSA-2026:76129","RHSA-2026:76130"],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-05-19T10:52:24.684Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-06T16:43:47.490Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":30,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T04:29:30.897Z","stale":false,"partial":false}}