CVE-2026-40319

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.5 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 99% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
4.6%
KEV
Not listed

Published

April 17, 2026

Last Modified

April 24, 2026

References (2)

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
giskard-checks1.0.1a1, 1.0.1a2, 1.0.1b11.0.2b1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 33× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-09 19:10 UTCEPSS rescore
  3. 2026-07-08 15:15 UTCEPSS rescore
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  1. 2026-06-18 17:52 UTCEPSS rescore
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  3. 2026-06-16 17:52 UTCEPSS rescore
  4. 2026-06-15 17:49 UTCEPSS rescore
  5. 2026-06-14 19:27 UTCEG score recompute
  6. 2026-06-13 23:00 UTCEPSS rescore
  7. 2026-06-12 23:12 UTCEPSS rescore
  8. 2026-06-12 23:12 UTCEPSS rescore
  9. 2026-06-11 18:47 UTCEG score recompute
  10. 2026-06-11 14:00 UTCEPSS rescore
  11. 2026-06-10 22:18 UTCEPSS rescore
  12. 2026-06-10 13:22 UTCEPSS rescore
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  14. 2026-06-10 11:13 UTCEG score recompute
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  16. 2026-06-08 14:17 UTCEPSS rescore
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  18. 2026-06-08 08:59 UTCEG score recompute
  19. 2026-06-07 15:25 UTCEPSS rescore
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  21. 2026-06-07 07:51 UTCEG score recompute
  22. 2026-06-06 13:47 UTCEPSS rescore
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  24. 2026-06-06 06:44 UTCEG score recompute
  25. 2026-06-05 22:47 UTCEPSS rescore
  26. 2026-06-05 06:10 UTCEPSS rescore
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  28. 2026-06-04 23:03 UTCEG score recompute
  29. 2026-06-04 13:12 UTCEPSS rescore
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  31. 2026-06-03 19:59 UTCEG score recompute
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  35. 2026-06-01 13:52 UTCEPSS rescore
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  38. 2026-05-31 00:16 UTCEPSS rescore
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  41. 2026-05-29 13:44 UTCEPSS rescore
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  43. 2026-05-28 13:44 UTCEPSS rescore
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  46. 2026-05-27 13:40 UTCEPSS rescore
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  49. 2026-05-26 13:44 UTCEPSS rescore
  50. 2026-05-26 07:18 UTCEPSS rescore
  51. 2026-05-26 07:18 UTCEPSS rescore
  52. 2026-05-23 00:08 UTCEG score recompute
  53. 2026-05-20 16:54 UTCEG score recompute
  54. 2026-05-20 11:22 UTCEPSS rescore
  55. 2026-05-20 11:22 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-40319?
CVE-2026-40319 is a medium vulnerability published on April 17, 2026. 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,…
When was CVE-2026-40319 disclosed?
CVE-2026-40319 was first published in the National Vulnerability Database on April 17, 2026, with the most recent update on April 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40319 actively exploited?
CVE-2026-40319 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 4.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40319?
CVE-2026-40319 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-40319?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40319, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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