CVE-2026-78426Logout bypass via alternate JWT spelling
Updated under an hour ago ()
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It affects SUSE neuvector. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 2.0 LOW (v4.0, CNA)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
- Weakness (CWE)
- CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- suse
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
SUSE neuvector suse:neuvector (from the name) | through v5.6.1; fixed at 5.6.2, fixed at 5.5.4, fixed at 5.4.11 | CNA record |
References
- https://github.com/neuvector/neuvector/security/advisories/GHSA-wcx5-mq6c-c54jvendor-advisory
- https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-78426issue-tracking
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.