CVE-2026-87637

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-09. 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 — 4 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 Extensions in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3
9.6
Vendor severity
MEDIUMper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Medium)
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 9, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 30, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🟡 PoC Available

Chromium

https://issues.chromium.org/issues/534863145
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-2026-87637(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 ... 153.0.8010.47-2~deb13u1 (422 versions)
  • every version up to 153.0.8010.52-1~deb12u1: fixed in 153.0.8010.52-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 153.0.8010.47-2~deb12u1 (185 versions)
  • every version up to 153.0.8010.47-2~deb13u1: fixed in 153.0.8010.47-2~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 152.0.7977.82-1~deb13u1 (183 versions)
  • every version up to 153.0.8010.47-1: fixed in 153.0.8010.47-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 87× in last 7d / 323× 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 323 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87637?
CVE-2026-87637 is a critical vulnerability published on September 9, 2026. Use after free in Extensions in Google Chrome on on Mac prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-87637 disclosed?
CVE-2026-87637 was first published 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-2026-87637 actively exploited?
CVE-2026-87637 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-2026-87637?
CVE-2026-87637 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-87637?
No fix for CVE-2026-87637 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-2026-87637 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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