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Leantime - OIDC Login CSRF via Unconditional State Verification Stub

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severity
high
date
Affecting

  • Leantime <= 3.4.4, fixed in commit 9630eb7

CWE
  • CWE-352 Cross-Site Request Forgery (CSRF)
CVSS
8.6
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
George Chen
Description
Leantime contains an OIDC login CSRF vulnerability in the verifyState() method that unconditionally returns true without validating state parameters. Attackers can craft malicious callback URLs with attacker-controlled authorization codes to perform session fixation, logging victims in as the attacker.

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