CVE-2026-76021

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-20. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 8.8Exploit: 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 DOM in Google Chrome prior to 151.0.7922.173 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS v3
8.8
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
8.8HIGHmedium confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity88% × 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
33rd
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 20, 2026

Last Modified

August 25, 2026

Advisory Details (2)

Auto-updated Aug 21, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/541854084
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0404570826.html

Vendor Advisories for CVE-2026-76021(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 ... 151.0.7922.71-1~deb13u1 (408 versions)
  • every version up to 151.0.7922.173-1~deb12u1: fixed in 151.0.7922.173-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb13u1 (174 versions)
  • every version up to 151.0.7922.173-1~deb13u1: fixed in 151.0.7922.173-1~deb13u1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
chromium138.0.7204.183-1 ... 151.0.7922.71-1~deb13u1 (175 versions)
  • every version up to 151.0.7922.173-1: fixed in 151.0.7922.173-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 34× in last 7d / 138× 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 202 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-76021?
CVE-2026-76021 is a high vulnerability published on August 20, 2026. Use after free in DOM in Google Chrome prior to 151.0.7922.173 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-76021 disclosed?
CVE-2026-76021 was first published on August 20, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-76021 actively exploited?
CVE-2026-76021 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (33rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-76021?
CVE-2026-76021 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-76021?
No fix for CVE-2026-76021 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-2026-76021 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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