CVE-2026-7666 Affecting authentik-2026.2 package, versions <2026.2.5-r9


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.15% (5th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-AUTHENTIK20262-17984366
  • published15 Jul 2026
  • disclosed3 Jun 2026

Introduced: 3 Jun 2026

CVE-2026-7666  (opens in a new tab)

How to fix?

Upgrade Chainguard authentik-2026.2 to version 2026.2.5-r9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream authentik-2026.2 package and not the authentik-2026.2 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15. django.core.mail.backends.smtp.EmailBackend in Django fails to prevent reuse of a partially-initialized connection after a failed STARTTLS handshake when fail_silently=True, which allows on-path network attackers to read email content via cleartext interception. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Kasper Dupont for reporting this issue.

CVSS Base Scores

version 3.1