CVE-2026-45795
MEDIUMJanssen Project: JWE Request Object Signature Verification Bypass in jans-auth-server
Title source: cnaDescription
The Janssen Project is an open-source identity and access management (IAM) platform. Prior to 2.0.0, jans-auth-server accepts unsigned JWE request objects because JwtAuthorizationRequest skips inner signature validation when jwe.getSignedJWTPayload() returns null, and AuthzRequestService.processRequestObject() does not reject the unrecognized RSA-OAEP algorithm when forceSignedRequestObject=true. This issue is fixed in version 2.0.0.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/JanssenProject/jans/security/advisories/GHSA-r3gj-4pj2-9j3j
X_Refsource_Misc x_refsource_misc
https://github.com/JanssenProject/jans/pull/13438
X_Refsource_Misc x_refsource_misc
https://github.com/JanssenProject/jans/commit/0cdd214870ee30eb2186261f21c85b9e9fc63b5c
X_Refsource_Misc x_refsource_misc
https://github.com/JanssenProject/jans/releases/tag/v2.0.0
Scores
CVSS v3
5.3
EPSS
0.0016
EPSS Percentile
5.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-347
Status
published
Products (1)
JanssenProject/jans
< 2.0.0
Published
Jul 16, 2026
Tracked Since
Jul 16, 2026