CVE-2026-46689
Kanidm: Unauthenticated process abort via SCIM filter stack exhaustion
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-248 CWE-400 CWE-674 |
| Vendor | kanidm |
| Product | kanidm |
| Published | Jun 10, 2026 |
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Affected Versions
kanidm / kanidm
< 1.9.3