{"schemaVersion":3,"id":"CVE-2026-18140","aliases":["RHSA-2026:67593","RHSA-2026:67595","CGA-2mhp-795r-vmh5","CGA-3xv3-98qv-rffx","CGA-57p5-hx9q-8j7w","CGA-f55v-37g5-mxqm","CGA-fxvh-9m2r-xpjg","CGA-p83h-vf54-rjpf","CGA-7xg8-2xmj-rh4q","CGA-8cqh-g9qv-xh78","GHSA-8ffr-xgwf-xj56"],"status":"published","duplicateOf":null,"title":null,"description":"Uncontrolled recursion in the unknown-key skip path of the aws-smithy-json runtime crate before 0.62.7, which the smithy-rs code generator invokes from every generated struct deserializer, might allow remote unauthenticated users to cause a denial of service (process abort via stack exhaustion) via a single small HTTP request containing deeply nested JSON to a smithy-rs generated server.\n\n\n\nTo remediate this issue, users should upgrade to aws-smithy-json 0.62.7 or later and rebuild.","dates":{"published":"2026-07-30T18:34:04.099Z","modified":"2026-07-30T19:12:50.560Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.7,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"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 · Red hat","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":"4.0","versionLabel":"v4.0","source":"OSV · Wolfi","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"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":"4.0","versionLabel":"v4.0","source":"OSV · Chainguard","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"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":"4.0","versionLabel":"v4.0","source":"OSV · Crates.io","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Crates.io","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":"4.0","versionLabel":"v4.0","source":"NVD","score":8.7,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"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":0.00431,"percentile":0.35957,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00431},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00431,"percentile":0.35957}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00431,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00431,"percentile":0.35957}]},"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-674","name":"Uncontrolled Recursion","description":"The product does not properly control the amount of recursion that takes place,  consuming excessive resources, such as allocated memory or the program stack.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/674.html"}],"affected":[{"vendor":"amazon","product":"aws-smithy-json","name":"aws-smithy-json","label":"aws-smithy-json","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 0.62.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.62.7","eol":null,"hubHref":"/vendor/amazon/aws-smithy-json"},{"vendor":"chainguard","product":"apollo-router-2.10","name":"apollo-router-2.10","label":"apollo-router-2.10","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/apollo-router-2.10","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"codex","name":"codex","label":"codex","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/codex","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 0.162.1-r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 0.162.1-r1","eol":null,"hubHref":null},{"vendor":"chainguard","product":"pixi","name":"pixi","label":"pixi","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/pixi","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 0.81.0-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 0.81.0-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"zed","name":"zed","label":"zed","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/zed","purlType":"apk","versions":[{"text":"< 1.21.0-r4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.21.0-r4","eol":null,"hubHref":null},{"vendor":"wolfi","product":"codex","name":"codex","label":"codex","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/codex","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 0.162.1-r1","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 0.162.1-r1","eol":null,"hubHref":null},{"vendor":"wolfi","product":"pixi","name":"pixi","label":"pixi","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/pixi","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 0.81.0-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 0.81.0-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"zed","name":"zed","label":"zed","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/zed","purlType":"apk","versions":[{"text":"< 1.21.0-r4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.21.0-r4","eol":null,"hubHref":null},{"vendor":"aws","product":"aws-smithy-json","name":"aws-smithy-json","label":"aws-smithy-json","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 0.32.0, ≤ 0.62.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 0.32.0, ≤ 0.62.6","eol":null,"hubHref":"/vendor/aws/aws-smithy-json"},{"vendor":"Crates.Io","product":"aws-smithy-json","name":"aws-smithy-json","label":"aws-smithy-json","ecosystem":"Crates.Io","cpePart":null,"purl":"pkg:cargo/aws-smithy-json","purlType":"cargo","versions":[{"text":"< 0.62.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.62.7","eol":null,"hubHref":null},{"vendor":"redhat","product":"goose","name":"goose","label":"goose","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/goose","purlType":"rpm","versions":[{"text":"< 0:1.38.0-1.el10_2","noFixRecorded":false,"fixedIn":null},{"text":"< 0:1.38.0-1.el9_8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:1.38.0-1.el10_2 | < 0:1.38.0-1.el9_8","eol":null,"hubHref":null},{"vendor":"redhat","product":"goose-debuginfo","name":"goose-debuginfo","label":"goose-debuginfo","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/goose-debuginfo","purlType":"rpm","versions":[{"text":"< 0:1.38.0-1.el10_2","noFixRecorded":false,"fixedIn":null},{"text":"< 0:1.38.0-1.el9_8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:1.38.0-1.el10_2 | < 0:1.38.0-1.el9_8","eol":null,"hubHref":null},{"vendor":"redhat","product":"goose-debugsource","name":"goose-debugsource","label":"goose-debugsource","ecosystem":"Red Hat","cpePart":null,"purl":"pkg:rpm/redhat/goose-debugsource","purlType":"rpm","versions":[{"text":"< 0:1.38.0-1.el10_2","noFixRecorded":false,"fixedIn":null},{"text":"< 0:1.38.0-1.el9_8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0:1.38.0-1.el10_2 | < 0:1.38.0-1.el9_8","eol":null,"hubHref":null}],"affectedCount":13,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://crates.io/crates/aws-smithy-json/0.62.7","label":"crates.io/crates/aws-smithy-json/0.62.7","hostname":"crates.io","tags":["Patch","ARTICLE","WEB","Product"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-067-aws/","label":"aws.amazon.com/security/security-bulletins/2026-067-aws/","hostname":"aws.amazon.com","tags":["Vendor Advisory","ARTICLE"]},{"url":"https://github.com/smithy-lang/smithy-rs/security/advisories/GHSA-8ffr-xgwf-xj56","label":"github.com/smithy-lang/smithy-rs/security/advisories/GHSA-8ffr-xgwf-xj56","hostname":"github.com","tags":["Third Party Advisory","ARTICLE","WEB","Vendor Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:67593","label":"access.redhat.com/errata/RHSA-2026:67593","hostname":"access.redhat.com","tags":["Advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","label":"access.redhat.com/security/updates/classification/","hostname":"access.redhat.com","tags":["ARTICLE"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_67593.json","label":"security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_67593.json","hostname":"security.access.redhat.com","tags":["Advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-18140","label":"access.redhat.com/security/cve/CVE-2026-18140","hostname":"access.redhat.com","tags":["REPORT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2509566","label":"bugzilla.redhat.com/show_bug.cgi?id=2509566","hostname":"bugzilla.redhat.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-18140","label":"www.cve.org/CVERecord?id=CVE-2026-18140","hostname":"www.cve.org","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18140","label":"nvd.nist.gov/vuln/detail/CVE-2026-18140","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:67595","label":"access.redhat.com/errata/RHSA-2026:67595","hostname":"access.redhat.com","tags":["Advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_67595.json","label":"security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_67595.json","hostname":"security.access.redhat.com","tags":["Advisory"]},{"url":"https://github.com/smithy-lang/smithy-rs/pull/4685","label":"github.com/smithy-lang/smithy-rs/pull/4685","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/smithy-lang/smithy-rs/commit/8f0882046c467981ba5b4fd91a10befa96bd262f","label":"github.com/smithy-lang/smithy-rs/commit/8f0882046c467981ba5b4fd91a10befa96bd262f","hostname":"github.com","tags":["WEB"]},{"url":"https://aws.amazon.com/security/security-bulletins/2026-067-aws","label":"aws.amazon.com/security/security-bulletins/2026-067-aws","hostname":"aws.amazon.com","tags":["WEB"]},{"url":"https://github.com/smithy-lang/smithy-rs","label":"github.com/smithy-lang/smithy-rs","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-07-30T18:34:04.099Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-30T19:12:50.560Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T00:32:33.936Z","stale":false,"partial":false}}