cve.bz

CVE-2017-18239

9.8 criticalEPSS 2.0%

Critical (9.8) in authentikat-jwt project authentikat-jwt. EPSS 2.0% chance of exploitation in the next 30 days. Fixed in com.jason-goodwin:authentikat-jwt_2.12 0.4.6.

A time-sensitive equality check on the JWT signature in the JsonWebToken.validate method in main/scala/authentikat/jwt/JsonWebToken.scala in authentikat-jwt (aka com.jason-goodwin/authentikat-jwt) version 0.4.5 and earlier allows the supplier of a JWT token to guess bit after bit of the signature by repeating validation requests.

Severity

CVSS 3.0

9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
2.0% chance of exploitation in the next 30 days; higher than 80% of CVEs (scores of 2026-10-31)
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-3rhm-67j6-42jqMavencom.jason-goodwin:authentikat-jwt_2.12<0.4.60.4.6

References

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