CVE-2026-15903

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-21. 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 a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

Out of bounds read and write in V8 in Google Chrome prior to 150.0.7871.128 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%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

July 20, 2026

Last Modified

July 24, 2026

Advisory Details (2)

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

Chromium

https://issues.chromium.org/issues/531503216
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_049796704.html

Vendor Advisories for CVE-2026-15903(2)

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 ... 150.0.7871.46-1~deb13u1 (390 versions)150.0.7871.181-1~deb12u1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 150.0.7871.46-1~deb13u1 (156 versions)150.0.7871.181-1~deb13u1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
chromium138.0.7204.183-1 ... 150.0.7871.46-1~deb13u1 (157 versions)150.0.7871.181-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 34× in last 7d / 160× 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 1,197 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-15903?
CVE-2026-15903 is a high vulnerability published on July 20, 2026. Out of bounds read and write in V8 in Google Chrome prior to 150.0.7871.128 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-15903 disclosed?
CVE-2026-15903 was first published in the National Vulnerability Database on July 20, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15903 actively exploited?
CVE-2026-15903 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 55.2% of all scored CVEs.
What is the CVSS score of CVE-2026-15903?
CVE-2026-15903 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-15903?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15903, 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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