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Case File

CVE-2017-18239

CRITICAL · CVSS 9.8 EPSS 2.00% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-03-18 · Last synced 2026-08-04

CyberRota Analysis

AI analysis pending.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2017-18239
Severity
CRITICAL
CVSS
9.8
EPSS
2.00%

Original NVD Description

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.