CVE-2026-78426

Logout bypass via alternate JWT spelling

State
Published
Severity
2.0 Low
Published
Sep 17, 2026
Updated
Sep 28, 2026
Reserved
Aug 24, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.02.0 LowCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:Nsuse

Weaknesses

Affected Products

ProductVersions
neuvectorSUSE
  • v5.6.1 and earlierAffectedfrom 5.6.2Not affectedfrom 5.5.4Not affectedfrom 5.4.11Not affected

References

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