CVE-2026-19166

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-07. 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: 0.4%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 Web Authentication in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS v3
9.6
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
9.6CRITICALmedium 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
0.4%
EPSS %ILE
31st
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

August 6, 2026

Last Modified

August 8, 2026

Advisory Details (2)

Auto-updated Sep 30, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/536584251
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_01193673229.html

Vendor Advisories for CVE-2026-19166(2)

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

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
chromium100.0.4896.127-1 ... 99.0.4844.84-1~deb11u1 (503 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
chromium113.0.5672.126-1 ... 151.0.7922.71-1~deb13u1 (397 versions)
  • every version up to 151.0.7922.108-1~deb12u1: fixed in 151.0.7922.108-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb13u1 (163 versions)
  • every version up to 151.0.7922.108-1~deb13u1: fixed in 151.0.7922.108-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb13u1 (164 versions)
  • every version up to 151.0.7922.108-1: fixed in 151.0.7922.108-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 37× in last 7d / 239× 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 576 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19166?
CVE-2026-19166 is a critical vulnerability published on August 6, 2026. Use after free in Web Authentication in Google Chrome prior to 151.0.7922.109 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-19166 disclosed?
CVE-2026-19166 was first published on August 6, 2026, with the most recent update on August 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19166 actively exploited?
CVE-2026-19166 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (31st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19166?
CVE-2026-19166 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-19166?
No fix for CVE-2026-19166 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-2026-19166 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-19166

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