CVE-2026-41425: Authlib: Cross-site request forging when using cache

Published Apr 24, 2026
·
Updated

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.starletteclient.OAuth. This vulnerability is fixed in 1.6.11.

Affected Software

3 affected componentsFixes available
pypi/authlib<1.6.11
Authlib Authlib<1.6.11
debian/python-authlib<=1.2.0-1+deb12u1, <=1.6.0-1+deb13u1
0.15.4-10.15.4-1+deb11u21.7.2-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/python-authlib to a version that resolves this vulnerability.

    Fixed in 0.15.4-1Fixed in 0.15.4-1+deb11u2Fixed in 1.7.2-1
  2. Upgrade

    Upgrade authlib.integrations.starlette_client.OAuth to a version that resolves this vulnerability.

    Fixed in 1.6.11

Event History

Apr 24, 2026
CVE Published
via MITRE·07:14 PM
Data Sourced
via MITRE·07:14 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:16 PM
DescriptionSeverityWeaknessAffected Software
Jul 16, 2026
Data Sourced
via Ubuntu·07:47 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·07:49 PM
DescriptionAffected Software
Data Sourced
via Launchpad·07:49 PM
Description
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Frequently Asked Questions

1

What is the severity of CVE-2026-41425?

CVE-2026-41425 is considered a high severity vulnerability due to the lack of CSRF protection.

2

How do I fix CVE-2026-41425?

To fix CVE-2026-41425, upgrade to Authlib version 1.6.11 or later.

3

What does CVE-2026-41425 affect?

CVE-2026-41425 affects versions of Authlib prior to 1.6.11 that use the cache feature.

4

What type of vulnerability is CVE-2026-41425?

CVE-2026-41425 is a Cross-site Request Forgery (CSRF) vulnerability.

5

Is CVE-2026-41425 a critical vulnerability?

Yes, CVE-2026-41425 is considered critical due to its potential impact on user security.

Company

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Contact

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