CVE-2026-78426Logout bypass via alternate JWT spelling

Descripción

The NeuVector JWT verifier accepts noncanonical Base64URL encodings of the same RSA signature field. An attacker holding a valid JWT that has not expired, but was logged out of NeuVector, can continue using the non-expired token with equivalent spelling of the RSA signature field until the token validity expires.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/neuvector/neuvector/security/advisories/GHSA-wcx5-mq6c-c54j vendor-advisory
• https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78426 issue-tracking