CVE-2026-87802
Apache Syncope: SRA OAuth2 JWT signature verification bypass
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
Improper verification of cryptographic signature vulnerability in Apache Syncope. When SRA is configured for OAuth 2.0 without JWKS set URI assigned, an attacker can forge arbitrary JWTs to impersonate any user identity and permissions, gaining full access to services proxied by SRA. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 through 4.0.7, from 4.1.0-M0 through 4.1.2. Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.
| CWE | CWE-347 |
| Vendor | apache software foundation |
| Product | apache syncope |
| Published | Sep 14, 2026 |
| Last Updated | Sep 14, 2026 |
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Affected Versions
Apache Software Foundation / Apache Syncope
3.0.0-M0 ≤ 3.0.16 4.0.0-M0 ≤ 4.0.7 4.1.0-M0 ≤ 4.1.2
References
Credits
MopMonk AI