CVE-2026-44590

CRITICALNVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.3 under NVD CVSS v3. EPSS exploit probability: 1.1%, top 35% 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
Elevated
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.3Exploit: Elevated riskExposed: 0

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

Sherlock hunts down social media accounts by username across social networks. Prior to 0.16.1, the GitHub Actions workflow validate_modified_targets.yml is vulnerable to command injection via the pull_request_target trigger. Any GitHub user can execute arbitrary commands on the CI runner and exfiltrate the GITHUB_TOKEN by opening a pull request. No approval, review, or merge is required. This vulnerability is fixed in 0.16.1.

CVSS v3
9.3
EG Score
9.3(medium)
EG Risk
73(Attend)
EG Risk 73/100SSVC: Attend

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
Severity93% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
1%
EPSS %ILE
65%
KEV
Not listed

Published

May 27, 2026

Last Modified

May 29, 2026

Advisory Details (1)

Auto-updated Sep 15, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Command Injection via pull_request_target in validate_modified_targets.yml · Advisory · sherlock-project/sherlock · GitHub

https://github.com/sherlock-project/sherlock/security/advisories/GHSA-v6wr-ccr4-x8g9

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 30× 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 141 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-44590?
CVE-2026-44590 is a critical vulnerability published on May 27, 2026. Sherlock hunts down social media accounts by username across social networks. Prior to 0.16.1, the GitHub Actions workflow validatemodifiedtargets.yml is vulnerable to command injection via the pullrequesttarget trigger. Any GitHub user can execute arbitrary commands on the CI runner and exfiltrate…
When was CVE-2026-44590 disclosed?
CVE-2026-44590 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on May 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44590 actively exploited?
CVE-2026-44590 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 35.1% of all scored CVEs.
What is the CVSS score of CVE-2026-44590?
CVE-2026-44590 has a CVSS v3 base score of 9.3 (NVD).
How do I remediate CVE-2026-44590?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44590, 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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