Low severity · published Sep 17, 2026
CVE-2026-78426
Logout bypass via alternate JWT spelling
2.0
CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
neuvector · SUSE
through v5.6.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78426
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78426
vendor-advisory
https://github.com/neuvector/neuvector/security/advisories/GHSA-wcx5-mq6c-c54j
issue-tracking
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78426
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