CVE-2026-28802
HIGH
7,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
CRITICAL
9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
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.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0003
Percentile
0,1th
Updated
EPSS Score Trend (Last 10 Days)
347
Improper Verification of Cryptographic Signature
DraftCommon Consequences
Security Scopes Affected:
Access Control
Integrity
Confidentiality
Potential Impacts:
Gain Privileges Or Assume Identity
Modify Application Data
Execute Unauthorized Code Or Commands
Applicable Platforms
All platforms may be affected
Application
Authlib by Authlib
Version Range Affected
From
1.6.5
(inclusive)
To
1.6.7
(exclusive)
CPE Identifier
View Detailed Analysis
cpe:2.3:a:authlib:authlib:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/authlib/authlib/commit/a61c2acb807496e67f32051b5f1b1d5ccf8f0…
https://github.com/authlib/authlib/commit/b87c32ed07b8ae7f805873e1c9cafd1016761…
https://github.com/authlib/authlib/security/advisories/GHSA-7wc2-qxgw-g8gg