High
authentik has a Signature Verification Bypass via SAML Assertion Wrapping
Type: advisorySources: OSV
authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under Advanced Protocol settings configured, it was possible for an attacker to inject a malicious assertion before the signed assertion that authentik would use instead. authentik 2025.8.6, 2025.10.4, and 2025.12.4 fix this issue.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-25922
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:33 UTC · Revision 1
Source evidence
authentik has a Signature Verification Bypass via SAML Assertion Wrapping
core-osv · Original sourcePublished 12 Feb 2026, 19:38 UTC
authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under Advanced Protocol settings configured, it was possible for an attacker to inject a malicious assertion before the signed assertion that authentik would use instead. authentik 2025.8.6, 2025.10.4, and 2025.12.4 fix this issue.
osv:CVE-2026-25922
Complete source record
{
"id": "3d526639a77a7a0bdb99bf6a95f4239c60414a0e75ca1ae79f29b6f53f079807",
"url": "https://osv.dev/vulnerability/CVE-2026-25922",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "authentik has a Signature Verification Bypass via SAML Assertion Wrapping",
"summary": "authentik is an open-source identity provider. Prior to 2025.8.6, 2025.10.4, and 2025.12.4, when using a SAML Source that has the option Verify Assertion Signature under Verification Certificate enabled and not Verify Response Signature, or does not have the Encryption Certificate setting under Advanced Protocol settings configured, it was possible for an attacker to inject a malicious assertion before the signed assertion that authentik would use instead. authentik 2025.8.6, 2025.10.4, and 2025.12.4 fix this issue.",
"evidence": "osv:CVE-2026-25922",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-25922",
"aliases": [
"BIT-authentik-2026-25922",
"CVE-2026-25922",
"GHSA-jh35-c4cc-wjm4"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/goauthentik/authentik",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "bce6ba2afa6e021cfb5a8aa6c0e25d97fb7cf254"
},
{
"introduced": "f2805b9b8ab423f35d6b2276e72b77594e5fb681"
},
{
"fixed": "7b0f19465b64905b49357e10dc15abffec3737d0"
},
{
"introduced": "56ba055857e210071519388e8a54092641b3a08d"
},
{
"fixed": "19ad8d3ae3f266ec1096bc4461fdf6bcda1aa079"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2025.8.6"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2025.10.0"
},
{
"fixed": "2025.10.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:goauthentik:authentik:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2025.12.0"
},
{
"fixed": "2025.12.4"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-25922.json"
}
}
],
"modified": "2026-10-28T02:30:22.358301221Z",
"provider": "osv",
"references": [
"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.10.4",
"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.12.4",
"https://github.com/goauthentik/authentik/releases/tag/version%2F2025.8.6",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25922.json",
"https://github.com/goauthentik/authentik/security/advisories/GHSA-jh35-c4cc-wjm4",
"https://nvd.nist.gov/vuln/detail/CVE-2026-25922"
],
"provider_metadata": {
"cwe_ids": [
"CWE-287",
"CWE-347"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25922.json"
}
},
"related_cves": [
{
"value": "CVE-2026-25922",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 488576,
"published_at": "2026-02-12T19:38:16.85+00:00"
}