CVE-2026-40032

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-04-09. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.8Exploit: NoneExposed: 0

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

UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
49.9%
KEV
Not listed

Published

April 8, 2026

Last Modified

June 23, 2026

Advisory Details (7)

Auto-updated Jun 10, 2026
Patch available. Sources: github_pr, github_commit.
generic

UAC < 3.3.0-rc1 Command Injection via Placeholder Substitution | Advisories | VulnCheck

https://www.vulncheck.com/advisories/uac-rc1-command-injection-via-placeholder-substitution
generic

Sentinel: Security Review Program | Mobasi

https://mobasi.ai/sentinel
generic

Security Vulnerability · Issue #429 · tclahr/uac · GitHub

https://github.com/tclahr/uac/issues/429
github_commit Patch Available

commit d0fca5e36d8d (tclahr/uac)

Patch available: tclahr/uac v3.3.0 (contains commit d0fca5e36d8d)

https://github.com/tclahr/uac/commit/d0fca5e36d8d6a33a4404f0f6fe92b0424544589
github_commit Patch Available

commit 50ace60e172e (tclahr/uac)

Patch available: tclahr/uac v3.3.0 (contains commit 50ace60e172e)

https://github.com/tclahr/uac/commit/50ace60e172e38feb78347bdf579311c23eff078
github_commit Patch Available

commit cb95d7166cd4 (tclahr/uac)

Patch available: tclahr/uac v3.3.0 (contains commit cb95d7166cd4)

https://github.com/tclahr/uac/commit/cb95d7166cd47908e1189d9669e43f9a6d3d707f
github_pr Patch Available

fix: escape runtime placeholders before eval

Patch available: tclahr/uac v3.3.0 (PR #443 merged 2026-03-28)

https://github.com/tclahr/uac/pull/443

Weakness Classification(1)

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

Data Freshness Timeline

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

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Frequently asked(5)

What is CVE-2026-40032?
CVE-2026-40032 is a high vulnerability published on April 8, 2026. UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the runcommand() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell…
When was CVE-2026-40032 disclosed?
CVE-2026-40032 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on June 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40032 actively exploited?
CVE-2026-40032 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 49.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-40032?
CVE-2026-40032 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-40032?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40032, 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.

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