CVE-2026-87544

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-09. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.8Exploit: None knownExposed: 0

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

Incorrect authorization in Extensions in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions into a privileged page via a crafted HTML page. (Chromium security severity: Low)

CVSS v3
9.8
Vendor severity
LOWper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Low)
EG Score
9.8(high)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity98% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 18, 2026

Advisory Details (2)

Auto-updated Sep 18, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/542355360
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-2026-87544(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 88× in last 7d / 116× 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.

Showing the most recent 100 of 116 total refreshes for this CVE.

  1. 2026-09-20 03:24 UTCVendor advisory
  2. 2026-09-20 03:24 UTCGHSA enrichment
  3. 2026-09-19 23:20 UTCVendor advisory
  4. 2026-09-19 23:20 UTCGHSA enrichment
  5. 2026-09-19 19:16 UTCEG score recompute
  6. 2026-09-19 19:16 UTCVendor advisory
  7. 2026-09-19 19:15 UTCGHSA enrichment
  8. 2026-09-19 15:08 UTCVendor advisory
  9. 2026-09-19 15:08 UTCGHSA enrichment
  10. 2026-09-19 10:55 UTCVendor advisory
  11. 2026-09-19 10:55 UTCGHSA enrichment
  12. 2026-09-19 06:50 UTCVendor advisory
  13. 2026-09-19 06:50 UTCGHSA enrichment
  14. 2026-09-19 02:44 UTCVendor advisory
  15. 2026-09-19 02:44 UTCGHSA enrichment
  16. 2026-09-18 22:39 UTCEG score recompute
  17. 2026-09-18 22:39 UTCVendor advisory
  18. 2026-09-18 22:39 UTCGHSA enrichment
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-18 18:35 UTCVendor advisory
  21. 2026-09-18 18:35 UTCGHSA enrichment
  22. 2026-09-18 14:22 UTCVendor advisory
  23. 2026-09-18 14:22 UTCGHSA enrichment
  24. 2026-09-18 13:29 UTCEG score recompute
  25. 2026-09-18 13:29 UTCVendor advisory
Show 75 more
  1. 2026-09-18 13:29 UTCGHSA enrichment
  2. 2026-09-18 12:33 UTCVendor advisory
  3. 2026-09-18 12:33 UTCGHSA enrichment
  4. 2026-09-18 08:28 UTCVendor advisory
  5. 2026-09-18 08:28 UTCGHSA enrichment
  6. 2026-09-18 04:24 UTCVendor advisory
  7. 2026-09-18 04:24 UTCGHSA enrichment
  8. 2026-09-18 00:19 UTCVendor advisory
  9. 2026-09-18 00:19 UTCGHSA enrichment
  10. 2026-09-17 20:15 UTCEG score recompute
  11. 2026-09-17 20:15 UTCVendor advisory
  12. 2026-09-17 20:15 UTCGHSA enrichment
  13. 2026-09-17 19:32 UTCEPSS rescore
  14. 2026-09-17 12:17 UTCVendor advisory
  15. 2026-09-17 12:17 UTCGHSA enrichment
  16. 2026-09-17 08:13 UTCVendor advisory
  17. 2026-09-17 08:12 UTCGHSA enrichment
  18. 2026-09-17 04:08 UTCVendor advisory
  19. 2026-09-17 04:08 UTCGHSA enrichment
  20. 2026-09-17 00:04 UTCVendor advisory
  21. 2026-09-17 00:04 UTCGHSA enrichment
  22. 2026-09-16 19:59 UTCVendor advisory
  23. 2026-09-16 19:59 UTCGHSA enrichment
  24. 2026-09-16 15:41 UTCEG score recompute
  25. 2026-09-16 15:41 UTCVendor advisory
  26. 2026-09-16 15:41 UTCGHSA enrichment
  27. 2026-09-16 14:09 UTCEPSS rescore
  28. 2026-09-16 11:37 UTCVendor advisory
  29. 2026-09-16 11:37 UTCGHSA enrichment
  30. 2026-09-16 07:29 UTCEG score recompute
  31. 2026-09-16 07:29 UTCVendor advisory
  32. 2026-09-16 07:29 UTCGHSA enrichment
  33. 2026-09-16 05:15 UTCEPSS rescore
  34. 2026-09-16 03:24 UTCVendor advisory
  35. 2026-09-16 03:24 UTCGHSA enrichment
  36. 2026-09-15 23:19 UTCVendor advisory
  37. 2026-09-15 23:19 UTCGHSA enrichment
  38. 2026-09-15 18:52 UTCVendor advisory
  39. 2026-09-15 18:52 UTCGHSA enrichment
  40. 2026-09-15 14:47 UTCVendor advisory
  41. 2026-09-15 14:47 UTCGHSA enrichment
  42. 2026-09-15 10:42 UTCVendor advisory
  43. 2026-09-15 10:42 UTCGHSA enrichment
  44. 2026-09-15 06:35 UTCEG score recompute
  45. 2026-09-15 06:35 UTCVendor advisory
  46. 2026-09-15 06:35 UTCGHSA enrichment
  47. 2026-09-15 03:12 UTCEPSS rescore
  48. 2026-09-15 03:12 UTCEPSS rescore
  49. 2026-09-15 02:30 UTCGHSA enrichment
  50. 2026-09-14 22:23 UTCGHSA enrichment
  51. 2026-09-14 18:16 UTCGHSA enrichment
  52. 2026-09-14 13:37 UTCGHSA enrichment
  53. 2026-09-14 13:00 UTCEG score recompute
  54. 2026-09-14 13:00 UTCGHSA enrichment
  55. 2026-09-14 10:42 UTCGHSA enrichment
  56. 2026-09-14 06:37 UTCGHSA enrichment
  57. 2026-09-14 02:33 UTCGHSA enrichment
  58. 2026-09-13 22:28 UTCGHSA enrichment
  59. 2026-09-13 18:24 UTCEG score recompute
  60. 2026-09-13 18:24 UTCGHSA enrichment
  61. 2026-09-13 14:19 UTCGHSA enrichment
  62. 2026-09-13 10:15 UTCGHSA enrichment
  63. 2026-09-13 06:10 UTCGHSA enrichment
  64. 2026-09-13 02:06 UTCGHSA enrichment
  65. 2026-09-12 22:01 UTCGHSA enrichment
  66. 2026-09-12 17:56 UTCEG score recompute
  67. 2026-09-12 17:56 UTCGHSA enrichment
  68. 2026-09-12 13:52 UTCGHSA enrichment
  69. 2026-09-12 09:48 UTCGHSA enrichment
  70. 2026-09-12 05:44 UTCGHSA enrichment
  71. 2026-09-12 01:40 UTCGHSA enrichment
  72. 2026-09-11 21:36 UTCGHSA enrichment
  73. 2026-09-11 17:31 UTCEG score recompute
  74. 2026-09-11 17:31 UTCGHSA enrichment
  75. 2026-09-11 14:53 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87544?
CVE-2026-87544 is a critical vulnerability published on September 9, 2026. Incorrect authorization in Extensions in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions into a privileged page via a crafted HTML page. (Chromium security severity: Low)
When was CVE-2026-87544 disclosed?
CVE-2026-87544 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87544 actively exploited?
CVE-2026-87544 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 89.2% of all scored CVEs.
What is the CVSS score of CVE-2026-87544?
CVE-2026-87544 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-87544?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87544, 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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