{"schemaVersion":3,"id":"CVE-2026-0871","aliases":["CGA-975h-hqvf-m23c","CGA-prh8-52hh-9872","CGA-vfrm-pr99-g8ph","CGA-xx42-mwcv-rmc5","CGA-57jj-72gw-6675","CGA-5g8j-99r4-jcvc","CGA-8ccj-7p27-fw25","CGA-98qr-hm98-89mf","CGA-99j7-x65m-xhmm","CGA-9g7r-33m3-wjg4","CGA-cj78-mm74-wrjh","CGA-fj96-w292-w5x6","CGA-jr2m-xjw7-x9q7","GHSA-v4jw-m6rm-399h","BIT-keycloak-2026-0871","CGA-rf37-63pg-hx4q","CGA-wjmv-6xr4-3hf8","CGA-wq9j-4rm7-3ccx"],"status":"published","duplicateOf":null,"title":null,"description":"A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the \"Only administrators can view\" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.","dates":{"published":"2026-02-27T07:30:26.766Z","modified":"2026-03-06T18:50:44.774Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.9,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","exploitability":3.1,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","exploitability":3.1,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Maven","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","exploitability":3.1,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00326,"percentile":0.2423,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.019000000000000006,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00307},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00326,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00326,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00326,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00326,"percentile":0.2423}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00307,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00319,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00326,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00326,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00326,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00326,"percentile":0.2423}]},"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-266","name":"Incorrect Privilege Assignment","description":"A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/266.html"}],"affected":[{"vendor":"chainguard","product":"keycloak-26.3-iamguarded-compat","name":"keycloak-26.3-iamguarded-compat","label":"keycloak-26.3-iamguarded-compat","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-26.3-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-26.4","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-fips-26.3-iamguarded-fips","name":"keycloak-fips-26.3-iamguarded-fips","label":"keycloak-fips-26.3-iamguarded-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/keycloak-fips-26.3-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-26.4","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":"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":"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":"org.keycloak","product":"keycloak-server-spi-private","name":"org.keycloak:keycloak-server-spi-private","label":"keycloak-server-spi-private","ecosystem":"Maven","cpePart":null,"purl":"pkg:maven/org.keycloak/keycloak-server-spi-private","purlType":"maven","versions":[{"text":"< 26.5.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 26.5.2","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":"< 26.4.9","noFixRecorded":false,"fixedIn":null},{"text":"na","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 26.4.9 | na","eol":null,"hubHref":"/vendor/redhat/build_of_keycloak"},{"vendor":"redhat","product":"keycloak","name":"keycloak","label":"keycloak","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 26.4.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 26.4.0","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"keycloak","label":"Keycloak","category":"server-app"}},"hubHref":"/vendor/redhat/keycloak"}],"affectedCount":13,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:2365","label":"access.redhat.com/errata/RHSA-2026:2365","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Advisory","WEB"]},{"url":"https://access.redhat.com/errata/RHSA-2026:2366","label":"access.redhat.com/errata/RHSA-2026:2366","hostname":"access.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Advisory","WEB"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-0871","label":"access.redhat.com/security/cve/CVE-2026-0871","hostname":"access.redhat.com","tags":["VDB Entry","X Refsource REDHAT","Advisory","WEB","Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2428881","label":"bugzilla.redhat.com/show_bug.cgi?id=2428881","hostname":"bugzilla.redhat.com","tags":["Issue Tracking","X Refsource REDHAT","REPORT","WEB","Vendor Advisory"]},{"url":"https://access.redhat.com/downloads/content/package-browser/","label":"access.redhat.com/downloads/content/package-browser/","hostname":"access.redhat.com","tags":["WEB"]},{"url":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","label":"access.redhat.com/jbossnetwork/restricted/listSoftware.html","hostname":"access.redhat.com","tags":["WEB"]},{"url":"https://catalog.redhat.com/software/containers/","label":"catalog.redhat.com/software/containers/","hostname":"catalog.redhat.com","tags":["WEB"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0871.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0871.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0871","label":"nvd.nist.gov/vuln/detail/CVE-2026-0871","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/keycloak/keycloak/issues/45873","label":"github.com/keycloak/keycloak/issues/45873","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/keycloak/keycloak/commit/9d0f679ecea405958f167fcd0f4a6db6ae32c3fa","label":"github.com/keycloak/keycloak/commit/9d0f679ecea405958f167fcd0f4a6db6ae32c3fa","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/keycloak/keycloak","label":"github.com/keycloak/keycloak","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-02-27T07:30:26.766Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-03-06T18:50:44.774Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":20,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T15:44:33.446Z","stale":false,"partial":false}}