CVE-2026-84353

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.

Use after free in Shared Tab Groups in Google Chrome on on Android 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: Critical)

CVSS v3
9.6
Vendor severity
CRITICALper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Critical)
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
37%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Sep 22, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/522307103
generic

Chrome Releases: Stable Channel Update for Desktop

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

Vendor Advisories for CVE-2026-84353(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 97× in last 7d / 302× 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 302 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-84353?
CVE-2026-84353 is a critical vulnerability published on September 1, 2026. Use after free in Shared Tab Groups in Google Chrome on on Android 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: Critical)
When was CVE-2026-84353 disclosed?
CVE-2026-84353 was first published in the National Vulnerability Database on September 1, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-84353 actively exploited?
CVE-2026-84353 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 62.7% of all scored CVEs.
What is the CVSS score of CVE-2026-84353?
CVE-2026-84353 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84353?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-84353, 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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