CVE-2026-78426

published 2026-09-17

CVE-2026-78426: 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…

Priority P4 11 low 2 CVSS 4.0

AV N AC H AT N PR L UI A VC L VI L VA N SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
suse	neuvector	<= v5.6.1	—

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CWE-863