CVE-2026-40319CWE-1333

Giskard has a Regular Expression Denial of Service (ReDoS) in RegexMatching Check

Low · published April 17, 2026

CVSS v4.0
1.0
EPSS
0%
Percentile
4.6
In the wild
Unconfirmed
What it is

Giskard is an open-source testing framework for AI models. In versions prior to 1.0.2b1, the RegexMatching check passes a user-supplied regular expression pattern directly to Python's re.search() without any timeout or complexity guard. A crafted regex pattern can trigger catastrophic backtracking, causing the process to hang indefinitely. Exploitation requires write access to a check definition and subsequent execution of the test suite. This issue has been fixed in giskard-checks version 1.0.2b1.

The record
Technical detail
CVSS v4.0
1.0 · LOW
Vector
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
EPSS
0.00158 · 4.6th percentile
Weakness
CWE-1333 · Inefficient Regular Expression Complexity
Published
2026-04-17T17:16Z
EPSS history
Timeline
  • 17 APR 17:16Z
    Giskard has a Regular Expression Denial of Service (ReDoS) in RegexMatching Check
    cvelistv5