CVE-2026-58304

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-07-09. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: Elevated riskExposed: 0

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

Out-of-bounds read, Out-of-bounds write vulnerability in Samsung Open Source Escargot allows Overflow Buffers.

This issue affects Escargot: before 779f6bedf58f334dec64b0a51ebb724b4708b84a.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity61% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
5%
KEV
Not listed

Published

July 9, 2026

Last Modified

July 9, 2026

Advisory Details (2)

Auto-updated Jul 9, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
github_pr

Fix crash in ArrayBuffer transfer

Fix merged in Samsung/escargot PR #1580 on 2026-05-27 — awaiting tagged release

https://github.com/Samsung/escargot/pull/1580
generic

OOB in ArrayBuffer.prototype.transfer · Issue #1573 · Samsung/escargot · GitHub

https://github.com/Samsung/escargot/issues/1573

Vendor Advisories for CVE-2026-58304(1)

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

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 17× 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.

Showing the most recent 100 of 113 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-58304?
CVE-2026-58304 is a medium vulnerability published on July 9, 2026. Out-of-bounds read, Out-of-bounds write vulnerability in Samsung Open Source Escargot allows Overflow Buffers. This issue affects Escargot: before 779f6bedf58f334dec64b0a51ebb724b4708b84a.
When was CVE-2026-58304 disclosed?
CVE-2026-58304 was first published in the National Vulnerability Database on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58304 actively exploited?
CVE-2026-58304 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 95.4% of all scored CVEs.
What is the CVSS score of CVE-2026-58304?
CVE-2026-58304 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-58304?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58304, 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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