Skip to main content
VulnerabilityPublished Updated

CVE-2026-41425: Python authlib · Prior to 1.6.11, there is no CSRF protection on the cache feature in

Affects python-authlibSource GCVE Database

0

Not known to be exploited · CVSS 5.4 Medium · fixed in 1.3.0-1ubuntu0.1~esm2 : update python-authlib when convenient.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.3.0-1ubuntu0.1~esm2, 1.6.7-1ubuntu0.1~esm1
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. Weaponised: 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 26 Oct 2026.

What to do

Upgrade the Ubuntu python-authlib to 1.3.0-1ubuntu0.1~esm2 (package) or 1.6.7-1ubuntu0.1~esm1 (package).

Affected software

ProductAffectedFixed in
Ubuntu 26.10python-authlibpkg:deb/ubuntu/python-authlib?arch=source&distro=stonkingOther threatsAffected
  • =1.6.7-1
  • =1.7.2-1
  • =1.7.2-2
Fixed in–
Ubuntu Pro 26.04 LTSpython-authlibpkg:deb/ubuntu/python-authlib?arch=source&distro=esm-apps/resoluteOther threatsAffected
  • <1.6.7-1ubuntu0.1~esm1
Fixed in
  • 1.6.7-1ubuntu0.1~esm1
Ubuntu 25.10python-authlibpkg:deb/ubuntu/python-authlib?arch=source&distro=questingOther threatsAffected
  • =1.5.1-1
  • =1.5.2-1
  • =1.6.0-1
Fixed in–
Ubuntu Pro 24.04 LTSpython-authlibpkg:deb/ubuntu/python-authlib?arch=source&distro=esm-apps/nobleOther threatsAffected
  • <1.3.0-1ubuntu0.1~esm2
Fixed in
  • 1.3.0-1ubuntu0.1~esm2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.11, there is no CSRF protection on the cache feature in authlib.integrations.starlette_client.OAuth. This vulnerability is fixed in 1.6.11.

References

Community reviews

Loading reviews…