CVE-2026-78426

Description

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.

CVSS Vector

References

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