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CVE-2026-47203 Authelia Missing Username Canonicalization in Basic Auth (LDAP)

🗓️ 19 Jun 2026 20:19:47Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 6 Views

Authelia Basic Auth on the authz endpoint creates ban buckets for username case variants; upgrade to 4.39.20.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-47203
19 Jun 202620:19
attackerkb
Circl
CVE-2026-47203
19 Jun 202622:07
circl
CVE
CVE-2026-47203
19 Jun 202620:19
cve
EUVD
EUVD-2026-38082
19 Jun 202620:19
euvd
Github Security Blog
Authelia Missing Username Canonicalization in Basic Auth (LDAP)
29 May 202621:21
github
NVD
CVE-2026-47203
19 Jun 202621:16
nvd
OSV
GHSA-HJJ4-HFJM-FMRJ Authelia Missing Username Canonicalization in Basic Auth (LDAP)
29 May 202621:21
osv
Positive Technologies
PT-2026-45030
29 May 202600:00
ptsecurity
[
  {
    "vendor": "authelia",
    "product": "authelia",
    "versions": [
      {
        "version": ">= 4.38.0, < 4.39.20",
        "status": "affected"
      }
    ]
  }
]

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