VULNERABILITY INTELLIGENCE

CVE-2024-13939

CVSS score7.5 HIGH
EPSS probability0.37%
CISA KEVNot currently listed
Published2025-03-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

String::Compare::ConstantTime for Perl through 0.321 is vulnerable to timing attacks that allow an attacker to guess the length of a secret string. As stated in the documentation: "If the lengths of the strings are different, because equals returns false right away the size of the secret string may be leaked (but not its contents)." This is similar to CVE-2020-36829

Weakness classification

  • CWE-203: Observable Discrepancy
  • CWE-208: Observable Timing Discrepancy

Primary references