CVE-2026-37630

HIGHNVD 7.37.3—
EchelonGraph scoreMEDIUM confidence

Score 7.3 from GitHub Security Advisory (severity: HIGH) published 2026-05-11. NVD baseline CVSS 7.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.3
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.3Exploit: NoneExposed: 0

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

An issue in QuickJS-NG v.0.12.1 allows an attacker to execute arbitrary code via the js_mapped_arguments_mark function

CVSS v3
7.3
EG Score
7.3(medium)
EPSS
14.2%
KEV
Not listed

Published

May 11, 2026

Last Modified

May 13, 2026

Advisory Details (1)

Auto-updated Jun 10, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Use of uninitialized memory in mapped arguments garbage collection · Issue #1400 · quickjs-ng/quickjs · GitHub

https://github.com/quickjs-ng/quickjs/issues/1400

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 47× 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 156 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-37630?
CVE-2026-37630 is a high vulnerability published on May 11, 2026. An issue in QuickJS-NG v.0.12.1 allows an attacker to execute arbitrary code via the jsmappedarguments_mark function
When was CVE-2026-37630 disclosed?
CVE-2026-37630 was first published in the National Vulnerability Database on May 11, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-37630 actively exploited?
CVE-2026-37630 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-37630?
CVE-2026-37630 has a CVSS v3 base score of 7.3 (NVD).
How do I remediate CVE-2026-37630?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-37630, 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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