DEBIAN-CVE-2026-114615

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Source
https://security-tracker.debian.org/tracker/CVE-2026-114615
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-114615.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-114615
Upstream
Published
2026-10-22T22:18:04Z
Modified
2026-10-24T09:47:36Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
[none]
Details

Authlib is a Python library which builds OAuth and OpenID Connect servers. From 1.3.1 until 1.9.0, OctKey.import_key() checks asymmetric-key markers only at byte zero while Authlib's PEM loaders accept leading whitespace, comments, or a byte-order mark. In deployments that use the documented mixed algorithm registry and already configure verification with PEM or certificate bytes containing such a prefix, an unauthenticated attacker who knows those same public-key bytes can use them as an HMAC secret and forge HS256 tokens with arbitrary identity or authorization claims. This is a bypass of the remediation for CVE-2024-37568. The module-level jwt object reaches OctKey.import_key() in authlib/jose/rfc7518/oct_key.py, where POSSIBLE_UNSAFE_KEYS fails to identify prefixed asymmetric key material. This issue is fixed in version 1.9.0.

References

Affected packages

Debian:12 / python-authlib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.0-1
1.2.0-1+deb12u1
1.2.0-1+deb12u2
1.2.1-1
1.3.0-1
1.3.0-2
1.3.0-3
1.3.1-1
1.3.2-1
1.3.2-2
1.4.0-1
1.4.1-1
1.5.0-1
1.5.1-1
1.5.2-1
1.6.0-1
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-2026-114615.json"

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-2026-114615.json"

Debian:14 / python-authlib

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.6.0-1
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-2026-114615.json"