CVE-2026-11056

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-05. 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
9.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.6Exploit: NoneExposed: 0

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

Insufficient validation of untrusted input in SiteIsolation in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3
9.6
EG Score
9.6(medium)
EPSS
14.3%
KEV
Not listed

Published

June 4, 2026

Last Modified

June 8, 2026

Advisory Details (2)

Auto-updated Jun 5, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/498887785
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html

Vendor Advisories for CVE-2026-11056(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 67× in last 7d / 421× 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 426 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-11056?
CVE-2026-11056 is a critical vulnerability published on June 4, 2026. Insufficient validation of untrusted input in SiteIsolation in Google Chrome on Windows prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-11056 disclosed?
CVE-2026-11056 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on June 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11056 actively exploited?
CVE-2026-11056 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11056?
CVE-2026-11056 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-11056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11056, 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

Explore the affected products and dependency analysis for CVE-2026-11056

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