CVE-2026-31233

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-12. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Guardrails AI thru 0.6.7 contains a code injection vulnerability (CWE-94) in its Hub package installation mechanism. When installing validator packages via guardrails hub install, the system retrieves a manifest from the Guardrails Hub and dynamically executes a script specified in the post_install field. The script path is constructed from untrusted manifest data and executed without proper validation or sanitization, allowing remote code execution. An attacker who can publish malicious packages to the Hub can inject arbitrary code that will be executed on any system where a victim installs the malicious package.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
48%
KEV
Not listed

Published

May 12, 2026

Last Modified

May 14, 2026

Advisory Details (2)

Auto-updated Aug 26, 2026
No patch confirmed yet.
generic

GitHub - guardrails-ai/guardrails: Adding guardrails to large language models. · GitHub

https://github.com/guardrails-ai/guardrails
generic

Notion

https://www.notion.so/CVE-2026-31233-35d1e13931888142a954fb3f50ee0c94

Vendor Advisories for CVE-2026-31233(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
pipguardrails-ai—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFixed inDependents
guardrails-ai0.1.0 ... 0.6.7 (84 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 93× 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.

Showing the most recent 100 of 312 total refreshes for this CVE.

  1. 2026-09-01 04:39 UTCEPSS rescore
  2. 2026-09-01 04:39 UTCEPSS rescore
  3. 2026-08-30 19:17 UTCEPSS rescore
  4. 2026-08-30 01:22 UTCEPSS rescore
  5. 2026-08-28 21:41 UTCEPSS rescore
  6. 2026-08-27 14:25 UTCEPSS rescore
  7. 2026-08-26 14:46 UTCEPSS rescore
  8. 2026-08-25 13:49 UTCEPSS rescore
  9. 2026-08-24 14:17 UTCEPSS rescore
  10. 2026-08-23 18:20 UTCEG score recompute
  11. 2026-08-23 18:20 UTCGHSA enrichment
  12. 2026-08-23 00:19 UTCEPSS rescore
  13. 2026-08-21 23:49 UTCEPSS rescore
  14. 2026-08-20 22:55 UTCEPSS rescore
  15. 2026-08-20 22:55 UTCEPSS rescore
  16. 2026-08-19 17:03 UTCEPSS rescore
  17. 2026-08-18 13:48 UTCEPSS rescore
  18. 2026-08-17 13:47 UTCEPSS rescore
  19. 2026-08-17 10:53 UTCEG score recompute
  20. 2026-08-17 10:53 UTCGHSA enrichment
  21. 2026-08-16 14:56 UTCEPSS rescore
  22. 2026-08-16 08:36 UTCGHSA enrichment
  23. 2026-08-16 04:15 UTCEG score recompute
  24. 2026-08-16 04:15 UTCGHSA enrichment
  25. 2026-08-16 02:14 UTCEPSS rescore
Show 75 more
  1. 2026-08-15 01:30 UTCEPSS rescore
  2. 2026-08-15 00:26 UTCGHSA enrichment
  3. 2026-08-14 20:06 UTCGHSA enrichment
  4. 2026-08-14 15:46 UTCGHSA enrichment
  5. 2026-08-14 11:26 UTCGHSA enrichment
  6. 2026-08-14 07:06 UTCGHSA enrichment
  7. 2026-08-14 02:46 UTCEG score recompute
  8. 2026-08-14 02:46 UTCGHSA enrichment
  9. 2026-08-13 22:00 UTCEPSS rescore
  10. 2026-08-13 10:48 UTCGHSA enrichment
  11. 2026-08-13 05:56 UTCGHSA enrichment
  12. 2026-08-13 00:55 UTCGHSA enrichment
  13. 2026-08-12 20:35 UTCGHSA enrichment
  14. 2026-08-12 16:15 UTCEG score recompute
  15. 2026-08-12 16:15 UTCGHSA enrichment
  16. 2026-08-12 13:50 UTCEPSS rescore
  17. 2026-08-12 00:28 UTCGHSA enrichment
  18. 2026-08-11 20:07 UTCGHSA enrichment
  19. 2026-08-11 15:42 UTCEG score recompute
  20. 2026-08-11 15:42 UTCGHSA enrichment
  21. 2026-08-11 09:50 UTCGHSA enrichment
  22. 2026-08-11 05:24 UTCGHSA enrichment
  23. 2026-08-11 01:04 UTCEG score recompute
  24. 2026-08-11 01:04 UTCGHSA enrichment
  25. 2026-08-11 00:00 UTCEPSS rescore
  26. 2026-08-10 12:49 UTCGHSA enrichment
  27. 2026-08-10 08:29 UTCGHSA enrichment
  28. 2026-08-10 04:09 UTCGHSA enrichment
  29. 2026-08-09 23:49 UTCGHSA enrichment
  30. 2026-08-09 19:29 UTCGHSA enrichment
  31. 2026-08-09 15:10 UTCEG score recompute
  32. 2026-08-09 15:10 UTCGHSA enrichment
  33. 2026-08-09 13:46 UTCEPSS rescore
  34. 2026-08-09 10:50 UTCGHSA enrichment
  35. 2026-08-09 06:26 UTCGHSA enrichment
  36. 2026-08-09 02:06 UTCEG score recompute
  37. 2026-08-09 02:06 UTCGHSA enrichment
  38. 2026-08-08 16:37 UTCEPSS rescore
  39. 2026-08-08 09:56 UTCGHSA enrichment
  40. 2026-08-08 05:36 UTCGHSA enrichment
  41. 2026-08-08 01:16 UTCGHSA enrichment
  42. 2026-08-07 20:56 UTCGHSA enrichment
  43. 2026-08-07 16:36 UTCEG score recompute
  44. 2026-08-07 16:36 UTCGHSA enrichment
  45. 2026-08-07 12:16 UTCGHSA enrichment
  46. 2026-08-07 07:56 UTCGHSA enrichment
  47. 2026-08-07 01:30 UTCGHSA enrichment
  48. 2026-08-06 21:10 UTCGHSA enrichment
  49. 2026-08-06 16:50 UTCEG score recompute
  50. 2026-08-06 16:50 UTCGHSA enrichment
  51. 2026-08-06 13:46 UTCEPSS rescore
  52. 2026-08-06 10:50 UTCGHSA enrichment
  53. 2026-08-06 06:29 UTCGHSA enrichment
  54. 2026-08-06 02:09 UTCGHSA enrichment
  55. 2026-08-05 21:49 UTCEG score recompute
  56. 2026-08-05 21:49 UTCGHSA enrichment
  57. 2026-08-05 19:17 UTCEPSS rescore
  58. 2026-08-04 15:10 UTCEPSS rescore
  59. 2026-08-04 10:38 UTCEPSS rescore
  60. 2026-08-04 03:57 UTCGHSA enrichment
  61. 2026-08-03 23:37 UTCGHSA enrichment
  62. 2026-08-03 19:17 UTCEG score recompute
  63. 2026-08-03 19:17 UTCGHSA enrichment
  64. 2026-08-03 10:36 UTCEPSS rescore
  65. 2026-08-03 02:51 UTCGHSA enrichment
  66. 2026-08-02 22:31 UTCGHSA enrichment
  67. 2026-08-02 18:11 UTCGHSA enrichment
  68. 2026-08-02 13:51 UTCGHSA enrichment
  69. 2026-08-02 09:31 UTCGHSA enrichment
  70. 2026-08-02 04:17 UTCEG score recompute
  71. 2026-08-02 04:17 UTCGHSA enrichment
  72. 2026-08-02 02:26 UTCEPSS rescore
  73. 2026-08-01 23:22 UTCEG score recompute
  74. 2026-08-01 23:22 UTCGHSA enrichment
  75. 2026-08-01 04:16 UTCEPSS rescore

Related CVEs(same product + same CWE)

Same product

1 shown

pip:guardrails-ai

Frequently asked(5)

What is CVE-2026-31233?
CVE-2026-31233 is a critical vulnerability published on May 12, 2026. Guardrails AI thru 0.6.7 contains a code injection vulnerability (CWE-94) in its Hub package installation mechanism. When installing validator packages via guardrails hub install, the system retrieves a manifest from the Guardrails Hub and dynamically executes a script specified in the post_install…
When was CVE-2026-31233 disclosed?
CVE-2026-31233 was first published in the National Vulnerability Database on May 12, 2026, with the most recent update on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-31233 actively exploited?
CVE-2026-31233 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 52.0% of all scored CVEs.
What is the CVSS score of CVE-2026-31233?
CVE-2026-31233 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-31233?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-31233, 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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