🛡️ CVE-2026-46689
🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-248 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

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 extractor, before any handler body and therefore before any ACL check. This issue has been patched in version 1.9.3.

Details

Severity HIGH
CVSS Score 8.0
CVSS 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
CWE CWE-248
Public Exploit ✅ No
Source NVD
Published 2026-05-06
Updated 2026-06-12
Modified 2026-05-19
Fix URL N/A

Affected Packages

Software From version Fixed in
kanidm-proto — —
scim-proto — —
unknown — —

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