{"cve":"CVE-2026-46689","nvd":{"published":"2026-06-10T22:17:00.443","modified":"2026-07-23T09:10:00.113","status":"Deferred","description":"Kanidm is an identity management platform. Prior to version 1.9.3, a single unauthenticated GET to any /scim/v1/... endpoint with a ?filter= query string of a few thousand nested parentheses (≈ 4–12 KB) drives the recursive-descent PEG parser past the worker thread's stack guard page. Rust responds to stack overflow with std::process::abort() — the entire kanidmd process exits. The parse runs inside axum's Query<ScimEntryGetQuery> extractor, before any handler body and therefore before any ACL check. This issue has been patched in version 1.9.3.","cvss_v4":{"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","score":8.7},"cvss_v3":null,"cwes":["CWE-248","CWE-400","CWE-674"],"references":["https://github.com/kanidm/kanidm/releases/tag/v1.9.3","https://github.com/kanidm/kanidm/security/advisories/GHSA-r5fr-9gmv-jggh","https://github.com/kanidm/kanidm/security/advisories/GHSA-r5fr-9gmv-jggh"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:38:48.522727527+00:00"},"epss":{"cve":"CVE-2026-46689","score":0.00317,"percentile":0.24631,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r5fr-9gmv-jggh","url":"https://osv.dev/vulnerability/GHSA-r5fr-9gmv-jggh","summary":"scim_proto and kanidm_proto have an authenticated process abort via SCIM filter stack exhaustion","modified":"2026-06-29T15:46:31.311540029Z","packages":[{"ecosystem":"crates.io","name":"scim_proto","purl":"pkg:cargo/scim_proto","ranges":["<1.9.3"],"fixed":["1.9.3"]},{"ecosystem":"crates.io","name":"kanidm_proto","purl":"pkg:cargo/kanidm_proto","ranges":["<1.9.3"],"fixed":["1.9.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}