DEBIAN-CVE-2026-28802

See a problem?
Please try reporting it to the source first.

Source

https://security-tracker.debian.org/tracker/CVE-2026-28802

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28802.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-28802

Upstream

CVE-2026-28802

Published

2026-03-06T07:16:01Z

Modified

2026-09-11T08:47:31Z

Severity

9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application code when a failure was expected.. This issue has been patched in version 1.6.7.

References

https://security-tracker.debian.org/tracker/CVE-2026-28802

Affected packages

Debian:13 / python-authlib

Package

Name: python-authlib
Purl: pkg:deb/debian/python-authlib?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.6.0-1

1.6.0-1+deb13u1

1.6.1-1

1.6.3-1

1.6.4-1

1.6.5-1

1.6.6-1

1.6.7-1

1.6.8-1

1.6.9-1

1.7.0-1

1.7.2-1

1.7.2-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-28802.json"

Debian:14 / python-authlib