CVE-2026-87499

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

Incorrect authorization in Network in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

CVSS v3
8.1
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
8.1(high)
EG Risk
37(Track)
EG Risk 37/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
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

Chromium

https://issues.chromium.org/issues/553118043
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-2026-87499(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 38× in last 7d / 84× 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. 2026-09-25 10:59 UTCGHSA enrichment
  2. 2026-09-24 21:48 UTCEG score recompute
  3. 2026-09-24 21:48 UTCVendor advisory
  4. 2026-09-24 21:48 UTCGHSA enrichment
  5. 2026-09-24 14:04 UTCEPSS rescore
  6. 2026-09-24 08:36 UTCVendor advisory
  7. 2026-09-24 08:36 UTCGHSA enrichment
  8. 2026-09-23 19:39 UTCEG score recompute
  9. 2026-09-23 19:39 UTCVendor advisory
  10. 2026-09-23 19:39 UTCGHSA enrichment
  11. 2026-09-23 17:54 UTCEPSS rescore
  12. 2026-09-23 06:09 UTCVendor advisory
  13. 2026-09-23 06:09 UTCGHSA enrichment
  14. 2026-09-22 17:13 UTCEG score recompute
  15. 2026-09-22 17:13 UTCVendor advisory
  16. 2026-09-22 17:12 UTCGHSA enrichment
  17. 2026-09-22 16:01 UTCEPSS rescore
  18. 2026-09-22 04:11 UTCEG score recompute
  19. 2026-09-22 04:11 UTCVendor advisory
  20. 2026-09-22 04:10 UTCGHSA enrichment
  21. 2026-09-21 21:09 UTCEPSS rescore
  22. 2026-09-21 15:13 UTCVendor advisory
  23. 2026-09-21 15:13 UTCGHSA enrichment
  24. 2026-09-21 02:16 UTCEG score recompute
  25. 2026-09-21 02:16 UTCVendor advisory
Show 59 more
  1. 2026-09-21 02:16 UTCGHSA enrichment
  2. 2026-09-20 20:16 UTCEPSS rescore
  3. 2026-09-20 13:19 UTCVendor advisory
  4. 2026-09-20 13:18 UTCGHSA enrichment
  5. 2026-09-20 00:04 UTCEG score recompute
  6. 2026-09-20 00:04 UTCVendor advisory
  7. 2026-09-20 00:04 UTCGHSA enrichment
  8. 2026-09-19 11:07 UTCVendor advisory
  9. 2026-09-19 11:07 UTCGHSA enrichment
  10. 2026-09-18 22:10 UTCEG score recompute
  11. 2026-09-18 22:10 UTCVendor advisory
  12. 2026-09-18 22:10 UTCGHSA enrichment
  13. 2026-09-18 19:28 UTCEPSS rescore
  14. 2026-09-18 09:13 UTCVendor advisory
  15. 2026-09-18 09:13 UTCGHSA enrichment
  16. 2026-09-17 20:16 UTCEG score recompute
  17. 2026-09-17 20:16 UTCVendor advisory
  18. 2026-09-17 20:16 UTCGHSA enrichment
  19. 2026-09-17 19:32 UTCEPSS rescore
  20. 2026-09-17 07:13 UTCVendor advisory
  21. 2026-09-17 07:13 UTCGHSA enrichment
  22. 2026-09-16 18:15 UTCEG score recompute
  23. 2026-09-16 18:15 UTCVendor advisory
  24. 2026-09-16 18:14 UTCGHSA enrichment
  25. 2026-09-16 14:09 UTCEPSS rescore
  26. 2026-09-16 05:15 UTCEPSS rescore
  27. 2026-09-16 05:09 UTCVendor advisory
  28. 2026-09-16 05:09 UTCGHSA enrichment
  29. 2026-09-15 16:11 UTCVendor advisory
  30. 2026-09-15 16:11 UTCGHSA enrichment
  31. 2026-09-15 03:14 UTCEG score recompute
  32. 2026-09-15 03:14 UTCVendor advisory
  33. 2026-09-15 03:14 UTCGHSA enrichment
  34. 2026-09-15 03:12 UTCEPSS rescore
  35. 2026-09-15 03:12 UTCEPSS rescore
  36. 2026-09-14 14:17 UTCGHSA enrichment
  37. 2026-09-14 01:20 UTCEG score recompute
  38. 2026-09-14 01:20 UTCGHSA enrichment
  39. 2026-09-13 12:23 UTCGHSA enrichment
  40. 2026-09-12 23:26 UTCEG score recompute
  41. 2026-09-12 23:26 UTCGHSA enrichment
  42. 2026-09-12 10:29 UTCGHSA enrichment
  43. 2026-09-11 21:32 UTCEG score recompute
  44. 2026-09-11 21:32 UTCGHSA enrichment
  45. 2026-09-11 14:53 UTCEPSS rescore
  46. 2026-09-11 14:53 UTCEPSS rescore
  47. 2026-09-11 08:35 UTCGHSA enrichment
  48. 2026-09-10 19:38 UTCEG score recompute
  49. 2026-09-10 19:38 UTCGHSA enrichment
  50. 2026-09-10 16:23 UTCGHSA enrichment
  51. 2026-09-10 15:40 UTCEG score recompute▼ 0.70
  52. 2026-09-10 15:40 UTCGHSA enrichment
  53. 2026-09-10 15:39 UTCMITRE cvelistV5CVSS v3 → 8.1 · severity → HIGH
  54. 2026-09-10 04:57 UTCGHSA enrichment
  55. 2026-09-09 15:59 UTCGHSA enrichment
  56. 2026-09-09 14:25 UTCGHSA enrichment
  57. 2026-09-09 01:22 UTCNVD update
  58. 2026-09-09 01:02 UTCEG score recompute
  59. 2026-09-09 00:57 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87499?
CVE-2026-87499 is a high vulnerability published on September 9, 2026. Incorrect authorization in Network in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-87499 disclosed?
CVE-2026-87499 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-2026-87499 actively exploited?
CVE-2026-87499 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 78.1% of all scored CVEs.
What is the CVSS score of CVE-2026-87499?
CVE-2026-87499 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-87499?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87499, 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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