CVE-2026-58304

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH 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 — 4 sources updated this weekElevated
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 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(high)
EPSS
1.3%
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 20× in last 7d / 20× 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 08:25 UTCEG score recompute
  4. 2026-07-15 08:25 UTCGHSA enrichment
  5. 2026-07-14 08:47 UTCEG score recompute
  6. 2026-07-14 08:47 UTCGHSA enrichment
  7. 2026-07-13 22:31 UTCEPSS rescore
  8. 2026-07-13 09:09 UTCEG score recompute
  9. 2026-07-13 09:09 UTCGHSA enrichment
  10. 2026-07-12 09:31 UTCEG score recompute
  11. 2026-07-12 09:31 UTCGHSA enrichment
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-11 09:53 UTCEG score recompute
  14. 2026-07-11 09:53 UTCGHSA enrichment
  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-10 10:15 UTCEG score recompute
  18. 2026-07-10 10:15 UTCGHSA enrichment
  19. 2026-07-09 10:37 UTCEG score recompute
  20. 2026-07-09 10:35 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

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 1.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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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