CVE-2026-95356

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-29. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
9.6EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.6Exploit: None knownExposed services: Not assessed

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

Use after free in WindowDialog in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)

CVSS v3
9.6
Vendor severity
CRITICALper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Critical)
EG Score
9.6CRITICALhigh confidence
EG Risk
43
EG Risk 43/100CISA SSVC

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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
37th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 29, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Oct 2, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/560439699
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0856730748.html

Vendor Advisories for CVE-2026-95356(2)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
chromium113.0.5672.126-1 ... 154.0.8037.57-1~deb13u1 (427 versions)
  • every version up to 154.0.8037.57-1: fixed in 154.0.8037.57-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 154.0.8037.57-1~deb12u1 (191 versions)
  • every version up to 154.0.8037.57-1~deb13u1: fixed in 154.0.8037.57-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 154.0.8037.57-1~deb13u1 (192 versions)
  • every version up to 154.0.8037.57-1: fixed in 154.0.8037.57-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 54× in last 7d / 54× 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. 2026-10-05 06:56 UTCGHSA enrichment
  2. 2026-10-05 03:01 UTCEG score recompute
  3. 2026-10-05 03:00 UTCGHSA enrichment
  4. 2026-10-04 23:23 UTCEPSS rescore
  5. 2026-10-04 23:04 UTCGHSA enrichment
  6. 2026-10-04 19:07 UTCGHSA enrichment
  7. 2026-10-04 15:12 UTCGHSA enrichment
  8. 2026-10-04 11:13 UTCGHSA enrichment
  9. 2026-10-04 07:18 UTCGHSA enrichment
  10. 2026-10-04 03:24 UTCGHSA enrichment
  11. 2026-10-03 23:29 UTCGHSA enrichment
  12. 2026-10-03 19:33 UTCGHSA enrichment
  13. 2026-10-03 15:39 UTCEG score recompute
  14. 2026-10-03 15:38 UTCGHSA enrichment
  15. 2026-10-03 14:26 UTCEPSS rescore
  16. 2026-10-03 11:40 UTCGHSA enrichment
  17. 2026-10-03 07:41 UTCGHSA enrichment
  18. 2026-10-03 03:45 UTCGHSA enrichment
  19. 2026-10-02 23:49 UTCGHSA enrichment
  20. 2026-10-02 19:53 UTCEG score recompute
  21. 2026-10-02 19:53 UTCGHSA enrichment
  22. 2026-10-02 17:57 UTCEPSS rescore
  23. 2026-10-02 15:58 UTCGHSA enrichment
  24. 2026-10-02 12:01 UTCGHSA enrichment
  25. 2026-10-02 08:02 UTCGHSA enrichment
Show 29 more
  1. 2026-10-02 04:07 UTCGHSA enrichment
  2. 2026-10-02 00:07 UTCGHSA enrichment
  3. 2026-10-01 20:13 UTCEG score recompute
  4. 2026-10-01 20:13 UTCGHSA enrichment
  5. 2026-10-01 19:51 UTCEPSS rescore
  6. 2026-10-01 16:17 UTCGHSA enrichment
  7. 2026-10-01 12:22 UTCGHSA enrichment
  8. 2026-10-01 08:23 UTCGHSA enrichment
  9. 2026-10-01 04:28 UTCGHSA enrichment
  10. 2026-10-01 00:34 UTCGHSA enrichment
  11. 2026-09-30 20:38 UTCGHSA enrichment
  12. 2026-09-30 16:43 UTCGHSA enrichment
  13. 2026-09-30 16:16 UTCEG score recompute
  14. 2026-09-30 16:16 UTCGHSA enrichment
  15. 2026-09-30 15:04 UTCEPSS rescore
  16. 2026-09-30 11:57 UTCGHSA enrichment
  17. 2026-09-30 08:02 UTCGHSA enrichment
  18. 2026-09-30 04:07 UTCEG score recompute
  19. 2026-09-30 04:07 UTCGHSA enrichment
  20. 2026-09-30 03:42 UTCGHSA enrichment
  21. 2026-09-29 23:45 UTCEG score recompute
  22. 2026-09-29 23:45 UTCGHSA enrichment
  23. 2026-09-29 19:21 UTCEG score recompute▲ 0.80
  24. 2026-09-29 19:21 UTCGHSA enrichment
  25. 2026-09-29 19:19 UTCNVD updateCVSS v3 → 9.6 · severity → CRITICAL
  26. 2026-09-29 19:04 UTCGHSA enrichment
  27. 2026-09-29 18:25 UTCNVD update
  28. 2026-09-29 17:44 UTCEG score recompute
  29. 2026-09-29 17:38 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-95356?
CVE-2026-95356 is a critical vulnerability published on September 29, 2026. Use after free in WindowDialog in Google Chrome prior to 154.0.8037.57 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Critical)
When was CVE-2026-95356 disclosed?
CVE-2026-95356 was first published on September 29, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-95356 actively exploited?
CVE-2026-95356 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-95356?
CVE-2026-95356 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-95356?
No fix for CVE-2026-95356 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-95356 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-95356

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