CVE-2026-78985

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-25. 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: 1%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 reference resolution in FileSystem in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to potentially 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
9.6(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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
KEV
Not listed

Published

August 25, 2026

Last Modified

August 27, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

Chromium

https://issues.chromium.org/issues/500038021
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html

Vendor Advisories for CVE-2026-78985(1)

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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 95× in last 7d / 314× 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 314 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-78985?
CVE-2026-78985 is a critical vulnerability published on August 25, 2026. Incorrect reference resolution in FileSystem in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-78985 disclosed?
CVE-2026-78985 was first published in the National Vulnerability Database on August 25, 2026, with the most recent update on August 27, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78985 actively exploited?
CVE-2026-78985 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 53.0% of all scored CVEs.
What is the CVSS score of CVE-2026-78985?
CVE-2026-78985 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-78985?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78985, 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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