CVE-2026-78426
Published:September 17, 2026
Updated:October 13, 2026
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 Packages
https://github.com/neuvector/neuvector.git (GITHUB):
Affected version(s) >=v5.6.0 <v5.6.2Fix Suggestion:
Update to version v5.6.2https://github.com/neuvector/neuvector.git (GITHUB):
Affected version(s) >=v5.5.0 <v5.5.4Fix Suggestion:
Update to version v5.5.4https://github.com/neuvector/neuvector.git (GITHUB):
Affected version(s) >=v5.4.0 <v5.4.11Fix Suggestion:
Update to version v5.4.11Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
ACTIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
3.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Incorrect Authorization
EPSS
Base Score:
0.19