CVE-2026-87645

MEDIUMNVD 5.45.4—
EchelonGraph scoreHIGH confidence

Score 5.4 from GitHub Security Advisory published 2026-09-09. NVD baseline CVSS 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

Improper state validation in Safebrowsing in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3
5.4
Vendor severity
MEDIUMper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Medium)
EG Score
5.4(high)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 10, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🟡 PoC Available

Chromium

https://issues.chromium.org/issues/502611474
generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html

Vendor Advisories for CVE-2026-87645(1)

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

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 23× in last 7d / 39× 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. 2026-09-19 05:46 UTCEG score recompute
  2. 2026-09-19 05:46 UTCVendor advisory
  3. 2026-09-19 05:46 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 07:17 UTCEG score recompute
  6. 2026-09-18 07:17 UTCVendor advisory
  7. 2026-09-18 07:17 UTCGHSA enrichment
  8. 2026-09-17 19:32 UTCEPSS rescore
  9. 2026-09-17 08:48 UTCEG score recompute
  10. 2026-09-17 08:48 UTCVendor advisory
  11. 2026-09-17 08:48 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 10:19 UTCEG score recompute
  14. 2026-09-16 10:19 UTCVendor advisory
  15. 2026-09-16 10:18 UTCGHSA enrichment
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-15 11:50 UTCEG score recompute
  18. 2026-09-15 11:50 UTCVendor advisory
  19. 2026-09-15 11:50 UTCGHSA enrichment
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 13:21 UTCEG score recompute
  22. 2026-09-14 13:21 UTCGHSA enrichment
  23. 2026-09-13 14:49 UTCGHSA enrichment
  24. 2026-09-12 16:17 UTCEG score recompute
  25. 2026-09-12 16:17 UTCGHSA enrichment
Show 14 more
  1. 2026-09-11 17:48 UTCEG score recompute
  2. 2026-09-11 17:48 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-10 19:19 UTCGHSA enrichment
  6. 2026-09-10 18:55 UTCEG score recompute
  7. 2026-09-10 18:55 UTCGHSA enrichment
  8. 2026-09-10 14:17 UTCEG score recompute▼ 1.10
  9. 2026-09-10 14:17 UTCGHSA enrichment
  10. 2026-09-10 14:16 UTCNVD updateCVSS v3 → 5.4 · severity → MEDIUM
  11. 2026-09-09 15:57 UTCGHSA enrichment
  12. 2026-09-09 01:22 UTCNVD update
  13. 2026-09-09 01:01 UTCEG score recompute
  14. 2026-09-09 00:57 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-87645?
CVE-2026-87645 is a medium vulnerability published on September 9, 2026. Improper state validation in Safebrowsing in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-87645 disclosed?
CVE-2026-87645 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87645 actively exploited?
CVE-2026-87645 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 93.6% of all scored CVEs.
What is the CVSS score of CVE-2026-87645?
CVE-2026-87645 has a CVSS v3 base score of 5.4 (NVD).
How do I remediate CVE-2026-87645?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87645, 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

Explore the affected products and dependency analysis for CVE-2026-87645

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