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VulnerabilityPublished Updated

CVE-2026-41425: authlib · Cross-Site Request Forgery

Affects authlibSource GCVE Database

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Not known to be exploited · CVSS 5.4 Medium : upgrade to 1.6.11 when convenient.

Data as of 12 Nov 2026, 01:05 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (GitHub_M)CVSS 3.15.4
Patch
Available – fixed in 1.6.11
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 11 Nov 2026.

What to do

Upgrade authlib to 1.6.11.

Affected software

ProductAffectedFixed in
authlib authlibAffected
  • <1.6.11
Fixed in
  • 1.6.11

AI-suggested

Upgrade to Authlib version 1.6.11 or later, where the CSRF protection on the cache feature in authlib.integrations.starlette_client.OAuth has been implemented. No other mitigation is required as the issue is fixed in this release.

Description

Authlib versions prior to 1.6.11 lack Cross-Site Request Forgery (CSRF) protection on the cache feature within authlib.integrations.starlette_client.OAuth. This vulnerability allows an attacker to potentially perform unauthorized actions via forged requests. The issue is addressed in version 1.6.11.

References

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