Insufficient validation of untrusted input in Extensions in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to perform privilege escalation via a crafted HTML page. (Chromium security severity: Medium)
CVE-2026-11149
HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EPSS
- 12.7%
- KEV
- Not listed
Published
June 4, 2026
Last Modified
June 5, 2026
Advisory Details (2)
Auto-updated Jun 9, 2026No patch confirmed yet.
generic
Chrome Releases: Stable Channel Update for Desktop
https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.htmlVendor Advisories for CVE-2026-11149(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Frequently asked(5)
What is CVE-2026-11149?
CVE-2026-11149 is a high vulnerability published on June 4, 2026. Insufficient validation of untrusted input in Extensions in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to perform privilege escalation via a crafted HTML page. (Chromium security severity: Medium)
When was CVE-2026-11149 disclosed?
CVE-2026-11149 was first published in the National Vulnerability Database on June 4, 2026, with the most recent update on June 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-11149 actively exploited?
CVE-2026-11149 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 12.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-11149?
CVE-2026-11149 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-11149?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-11149, 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-2026-11149
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