PYSEC-2026-188

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Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/authlib/PYSEC-2026-188.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-188
Aliases
Published
2026-05-27T20:16:37.463Z
Modified
2026-06-03T12:45:18.233136446Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.12 and 1.7.1, an unauthenticated open redirect in Authlib's OpenIDImplicitGrant and OpenIDHybridGrant authorization endpoint lets a remote attacker cause the authorization server to issue an HTTP 302 to an attacker-chosen URL by submitting an authorization request that omits the openid scope. This vulnerability is fixed in 1.6.12 and 1.7.1.

References

Affected packages

PyPI / authlib

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.12

Affected versions

0.*
0.1rc0
0.1
0.2
0.2.1
0.3
0.4
0.4.1
0.5
0.5.1
0.6
0.7
0.8
0.9
0.10
0.11
0.12
0.12.1
0.13
0.14
0.14.1
0.14.2
0.14.3
0.15
0.15.1
0.15.2
0.15.3
0.15.4
0.15.5
0.15.6
1.*
1.0.0a1
1.0.0a2
1.0.0b1
1.0.0b2
1.0.0rc1
1.0.0
1.0.1
1.1.0
1.2.0
1.2.1
1.3.0
1.3.1
1.3.2
1.4.0
1.4.1
1.5.0
1.5.1
1.5.2
1.6.0
1.6.1
1.6.2
1.6.3
1.6.4
1.6.5
1.6.6
1.6.7
1.6.8
1.6.9
1.6.10
1.6.11

Database specific

source
"https://github.com/pypa/advisory-database/blob/main/vulns/authlib/PYSEC-2026-188.yaml"