CVE-2026-84354

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-02. 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 a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0

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

Incorrect authorization in FileSystem in Google Chrome prior to 152.0.7977.75 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox 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
9.6(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
20%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 3, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/498839176
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop.html

Vendor Advisories for CVE-2026-84354(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 rangeFixed inDependents
chromium113.0.5672.126-1 ... 152.0.7977.64-1 (412 versions)152.0.7977.75-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 152.0.7977.75-1~deb12u1 (178 versions)152.0.7977.75-1~deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 152.0.7977.75-1~deb13u1 (180 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 101× in last 7d / 238× 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 238 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84354?
CVE-2026-84354 is a critical vulnerability published on September 1, 2026. Incorrect authorization in FileSystem in Google Chrome prior to 152.0.7977.75 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-84354 disclosed?
CVE-2026-84354 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84354 actively exploited?
CVE-2026-84354 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 80.4% of all scored CVEs.
What is the CVSS score of CVE-2026-84354?
CVE-2026-84354 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84354?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84354, 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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