CVE-2026-8540

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-14. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.8Exploit: None knownExposed: 0

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

Type Confusion in V8 in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a 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
8.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
23%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 19, 2026

Advisory Details (2)

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

Chromium

https://issues.chromium.org/issues/496627235
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html

Vendor Advisories for CVE-2026-8540(1)

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 rangeFixed inDependents
chromium100.0.4896.127-1 ... 99.0.4844.84-1~deb11u1 (500 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
chromium113.0.5672.126-1 ... 148.0.7778.96-3 (353 versions)148.0.7778.167-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 148.0.7778.96-3 (119 versions)148.0.7778.167-1~deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 148.0.7778.96-3 (120 versions)148.0.7778.167-1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 92× 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 240 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-8540?
CVE-2026-8540 is a high vulnerability published on May 14, 2026. Type Confusion in V8 in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-8540 disclosed?
CVE-2026-8540 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on May 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8540 actively exploited?
CVE-2026-8540 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 77.3% of all scored CVEs.
What is the CVSS score of CVE-2026-8540?
CVE-2026-8540 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-8540?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8540, 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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