CVE-2026-46689

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Source
https://cve.org/CVERecord?id=CVE-2026-46689
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46689.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-46689
Aliases
Published
2026-06-10T20:28:44Z
Modified
2026-10-21T02:58:13Z
Severity
  • 8.7 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Kanidm: Unauthenticated process abort via SCIM filter stack exhaustion
Details

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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-248",
        "CWE-400",
        "CWE-674"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46689.json"
}
References

Affected packages

Git / github.com/kanidm/kanidm

Affected ranges

Type
GIT
Repo
https://github.com/kanidm/kanidm
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7d4108698caeb324bb27a9d83b081d5701760131
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.9.3"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "original_tag":  "v1.9.3",
            "range":  [
                {
                    "fixed":  "7d4108698caeb324bb27a9d83b081d5701760131"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "1.9.3"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

1.*
1.7.0-dev
Other
debs
latest
kanidm-v1.*
kanidm-v1.1.0-alpha.2
kanidm_client-v1.*
kanidm_client-v1.1.0-alpha.2
kanidm_proto-v1.*
kanidm_proto-v1.1.0-alpha.2
kanidm_tools-v1.*
kanidm_tools-v1.1.0-alpha.2
kanidm_unix_int-v1.*
kanidm_unix_int-v1.1.0-alpha.2
nss_kanidm-v1.*
nss_kanidm-v1.1.0-alpha.2
pam_kanidm-v1.*
pam_kanidm-v1.1.0-alpha.2
v1.*
v1.0.0rc1
v1.0.0rc10
v1.0.0rc11
v1.0.0rc2
v1.0.0rc3
v1.0.0rc7
v1.0.0rc8
v1.0.0rc9
v1.1.0-alpha
v1.1.0-alpha.10
v1.1.0-alpha.11
v1.1.0-alpha.12
v1.1.0-alpha.2
v1.1.0-alpha.3
v1.1.0-alpha.4
v1.1.0-alpha.5
v1.1.0-alpha.6
v1.1.0-alpha.7
v1.1.0-alpha.8
v1.1.0-alpha.9
v1.1.0-beta.13
v1.1.0-rc.15
v1.1.0-rc.15-dev
v1.1.0-rc.16
v1.1.0alpha
v1.3.0-dev
v1.4.0-dev
v1.5.0-dev
v1.6.0-dev
v1.7.0-dev
v1.8.0-dev
v1.9.0
v1.9.0-dev
v1.9.0-pre
v1.9.1
v1.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46689.json"