CVE-2026-87511

MEDIUMPre-NVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

Missing authorization in DevTools in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Low)

CVSS v3
4.3
Vendor severity
LOWper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Low)
EG Score
4.3(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
12%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 15, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/513395384
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-2026-87511(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 27× in last 7d / 61× 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. 2026-09-24 23:10 UTCEG score recompute
  2. 2026-09-24 23:10 UTCVendor advisory
  3. 2026-09-24 23:10 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 00:30 UTCEG score recompute
  6. 2026-09-24 00:30 UTCVendor advisory
  7. 2026-09-24 00:30 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 02:25 UTCEG score recompute
  10. 2026-09-23 02:25 UTCVendor advisory
  11. 2026-09-23 02:25 UTCGHSA enrichment
  12. 2026-09-22 16:01 UTCEPSS rescore
  13. 2026-09-22 04:19 UTCEG score recompute
  14. 2026-09-22 04:19 UTCVendor advisory
  15. 2026-09-22 04:19 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 06:12 UTCEG score recompute
  18. 2026-09-21 06:12 UTCVendor advisory
  19. 2026-09-21 06:12 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 08:06 UTCEG score recompute
  22. 2026-09-20 08:06 UTCVendor advisory
  23. 2026-09-20 08:06 UTCGHSA enrichment
  24. 2026-09-19 09:59 UTCEG score recompute
  25. 2026-09-19 09:59 UTCVendor advisory
Show 36 more
  1. 2026-09-19 09:59 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 11:53 UTCEG score recompute
  4. 2026-09-18 11:53 UTCVendor advisory
  5. 2026-09-18 11:53 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 13:47 UTCVendor advisory
  8. 2026-09-17 13:47 UTCGHSA enrichment
  9. 2026-09-16 15:41 UTCEG score recompute
  10. 2026-09-16 15:41 UTCVendor advisory
  11. 2026-09-16 15:40 UTCGHSA enrichment
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-15 17:34 UTCVendor advisory
  15. 2026-09-15 17:34 UTCGHSA enrichment
  16. 2026-09-15 11:43 UTCEG score recompute
  17. 2026-09-15 11:43 UTCVendor advisory
  18. 2026-09-15 11:43 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 13:37 UTCGHSA enrichment
  22. 2026-09-14 12:45 UTCEG score recompute▼ 1.10
  23. 2026-09-14 12:45 UTCGHSA enrichment
  24. 2026-09-14 12:44 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
  25. 2026-09-14 06:24 UTCGHSA enrichment
  26. 2026-09-13 08:18 UTCGHSA enrichment
  27. 2026-09-12 10:12 UTCGHSA enrichment
  28. 2026-09-11 14:53 UTCEPSS rescore
  29. 2026-09-11 14:53 UTCEPSS rescore
  30. 2026-09-11 12:06 UTCGHSA enrichment
  31. 2026-09-10 13:59 UTCEG score recompute
  32. 2026-09-10 13:59 UTCGHSA enrichment
  33. 2026-09-09 15:53 UTCGHSA enrichment
  34. 2026-09-09 01:22 UTCNVD update
  35. 2026-09-09 00:58 UTCEG score recompute
  36. 2026-09-09 00:57 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87511?
CVE-2026-87511 is a medium vulnerability published on September 9, 2026. Missing authorization in DevTools in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to obtain cross-origin data via a crafted Chrome extension. (Chromium security severity: Low)
When was CVE-2026-87511 disclosed?
CVE-2026-87511 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87511 actively exploited?
CVE-2026-87511 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 87.7% of all scored CVEs.
What is the CVSS score of CVE-2026-87511?
CVE-2026-87511 has a CVSS v3.1 base score of 4.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-87511?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87511, 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-2026-87511

Explore →

Is Your Infrastructure Affected by CVE-2026-87511?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs