CVE-2026-19590

HIGHPre-NVD 7.37.3—
EchelonGraph scoreHIGH confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-09-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.3Exploit: None knownExposed: 0

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

OpenAI Codex Desktop for Windows and macOS could execute attacker-controlled Git hooks because automated Git operations trusted the repository's local core.hooksPath setting. If a user opens an attacker-prepared repository whose preserved .git/config points core.hooksPath to an attacker-controlled directory, Codex can run a malicious hook while processing the repository. The hook executes outside Codex's command sandbox, without user approval, and with the user's privileges, allowing it to read, change, or delete the user's files and access other resources available to the user's account. An ordinary Git clone does not preserve the attacker-controlled repository-local configuration required for exploitation.

CVSS v3
7.3
EG Score
7.3(high)
EG Risk
33(Track)
EG Risk 33/100SSVC: 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
Severity73% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 3, 2026

Advisory Details (1)

Auto-updated Sep 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
github_pr

Ignore configured hooks in git helpers

Fix merged in openai/codex PR #22843 on 2026-05-15 — awaiting tagged release

https://github.com/openai/codex/pull/22843

Vendor Advisories for CVE-2026-19590(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 72× 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. 2026-09-20 07:14 UTCGHSA enrichment
  2. 2026-09-19 19:54 UTCEG score recompute
  3. 2026-09-19 19:53 UTCGHSA enrichment
  4. 2026-09-19 08:44 UTCGHSA enrichment
  5. 2026-09-18 21:25 UTCEG score recompute
  6. 2026-09-18 21:25 UTCGHSA enrichment
  7. 2026-09-18 19:27 UTCEPSS rescore
  8. 2026-09-18 09:11 UTCGHSA enrichment
  9. 2026-09-17 22:02 UTCEG score recompute
  10. 2026-09-17 22:02 UTCGHSA enrichment
  11. 2026-09-17 10:53 UTCGHSA enrichment
  12. 2026-09-16 23:44 UTCEG score recompute
  13. 2026-09-16 23:44 UTCGHSA enrichment
  14. 2026-09-16 14:07 UTCEPSS rescore
  15. 2026-09-16 12:34 UTCEG score recompute
  16. 2026-09-16 12:34 UTCGHSA enrichment
  17. 2026-09-16 05:14 UTCEPSS rescore
  18. 2026-09-16 01:25 UTCGHSA enrichment
  19. 2026-09-15 14:16 UTCEG score recompute
  20. 2026-09-15 14:16 UTCGHSA enrichment
  21. 2026-09-15 03:06 UTCGHSA enrichment
  22. 2026-09-14 15:57 UTCGHSA enrichment
  23. 2026-09-14 04:48 UTCGHSA enrichment
  24. 2026-09-13 17:39 UTCEG score recompute
  25. 2026-09-13 17:39 UTCGHSA enrichment
Show 47 more
  1. 2026-09-13 16:46 UTCEPSS rescore
  2. 2026-09-13 06:30 UTCGHSA enrichment
  3. 2026-09-12 19:21 UTCEG score recompute
  4. 2026-09-12 19:21 UTCGHSA enrichment
  5. 2026-09-12 15:00 UTCEPSS rescore
  6. 2026-09-12 08:12 UTCGHSA enrichment
  7. 2026-09-11 21:02 UTCEG score recompute
  8. 2026-09-11 21:02 UTCGHSA enrichment
  9. 2026-09-11 14:52 UTCEPSS rescore
  10. 2026-09-11 09:53 UTCEG score recompute
  11. 2026-09-11 09:53 UTCGHSA enrichment
  12. 2026-09-11 09:36 UTCEPSS rescore
  13. 2026-09-10 22:44 UTCGHSA enrichment
  14. 2026-09-10 11:35 UTCEG score recompute
  15. 2026-09-10 11:35 UTCGHSA enrichment
  16. 2026-09-10 09:34 UTCEPSS rescore
  17. 2026-09-09 23:36 UTCGHSA enrichment
  18. 2026-09-09 10:32 UTCGHSA enrichment
  19. 2026-09-08 23:22 UTCEG score recompute
  20. 2026-09-08 23:22 UTCGHSA enrichment
  21. 2026-09-08 22:00 UTCEPSS rescore
  22. 2026-09-08 07:18 UTCGHSA enrichment
  23. 2026-09-07 20:09 UTCGHSA enrichment
  24. 2026-09-07 08:58 UTCGHSA enrichment
  25. 2026-09-06 21:41 UTCEG score recompute
  26. 2026-09-06 21:41 UTCGHSA enrichment
  27. 2026-09-06 13:47 UTCEPSS rescore
  28. 2026-09-06 10:31 UTCGHSA enrichment
  29. 2026-09-05 23:23 UTCEG score recompute
  30. 2026-09-05 23:23 UTCGHSA enrichment
  31. 2026-09-05 12:13 UTCGHSA enrichment
  32. 2026-09-05 01:02 UTCEG score recompute
  33. 2026-09-05 01:02 UTCGHSA enrichment
  34. 2026-09-04 13:52 UTCEG score recompute
  35. 2026-09-04 13:52 UTCGHSA enrichment
  36. 2026-09-04 05:06 UTCEPSS rescore
  37. 2026-09-04 02:42 UTCEG score recompute
  38. 2026-09-04 02:41 UTCGHSA enrichment
  39. 2026-09-03 15:31 UTCGHSA enrichment
  40. 2026-09-03 14:47 UTCEG score recompute▲ 7.30
  41. 2026-09-03 14:46 UTCGHSA enrichment
  42. 2026-09-03 14:43 UTCMITRE cvelistV5CVSS v3 → 7.3 · severity → HIGH
  43. 2026-09-02 14:11 UTCEPSS rescore
  44. 2026-09-01 21:07 UTCGHSA enrichment
  45. 2026-09-01 18:22 UTCNVD update
  46. 2026-09-01 17:22 UTCEG score recompute
  47. 2026-09-01 17:22 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19590?
CVE-2026-19590 is a high vulnerability published on September 1, 2026. OpenAI Codex Desktop for Windows and macOS could execute attacker-controlled Git hooks because automated Git operations trusted the repository's local core.hooksPath setting. If a user opens an attacker-prepared repository whose preserved .git/config points core.hooksPath to an attacker-controlled…
When was CVE-2026-19590 disclosed?
CVE-2026-19590 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19590 actively exploited?
CVE-2026-19590 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.9% of all scored CVEs.
What is the CVSS score of CVE-2026-19590?
CVE-2026-19590 has a CVSS v3.1 base score of 7.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19590, 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

Explore the affected products and dependency analysis for CVE-2026-19590

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