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CVE-2026-40165 authentik: SAML NameID XML Comment Injection Enables Authentication Bypass via Identifier Truncation

🗓️ 20 May 2026 23:35:18Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 37 Views

authentik NameID XML comment injection enables authentication bypass via NameID truncation; fixed in later releases.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-40165
20 May 202623:35
attackerkb
Circl
CVE-2026-40165
21 May 202602:00
circl
CNNVD
authentik 安全漏洞
21 May 202600:00
cnnvd
CVE
CVE-2026-40165
20 May 202623:35
cve
EUVD
EUVD-2026-31203
20 May 202623:35
euvd
NVD
CVE-2026-40165
21 May 202600:16
nvd
OSV
BIT-AUTHENTIK-2026-40165 authentik: SAML NameID XML Comment Injection Enables Authentication Bypass via Identifier Truncation
25 May 202614:36
osv
Positive Technologies
PT-2026-42273
20 May 202600:00
ptsecurity
RedhatCVE
CVE-2026-40165
5 Jun 202619:13
redhatcve
Vulnrichment
CVE-2026-40165 authentik: SAML NameID XML Comment Injection Enables Authentication Bypass via Identifier Truncation
20 May 202623:35
vulnrichment
Rows per page
[
  {
    "vendor": "goauthentik",
    "product": "authentik",
    "versions": [
      {
        "version": "< 2025.12.5",
        "status": "affected"
      },
      {
        "version": ">= 2026.2.0-rc1, < 2026.2.3",
        "status": "affected"
      }
    ]
  }
]

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