CVE-2026-9977

chromium-browser: Insufficient validation of untrusted input in WebShare

Published May 28, 2026 CVSS 3.1 · 8.3 High EPSS < 1% KEV · Not listed
Description
Insufficient validation of untrusted input in WebShare in Google Chrome on Android prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DSA Debian DSA DSA-6316-1 chromium security update
History
Type Values Removed Values Added
First Time appeared Google android
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:google:android:-:*:*:*:*:*:*:*
Vendors & Products Google android
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H'}

Type Values Removed Values Added
Title Insufficient Validation of WebShare Leading to Potential Sandbox Escape on Android Chrome chromium-browser: Insufficient validation of untrusted input in WebShare
Weaknesses CWE-1286
References
Metrics threat_severity

None

cvssV3_1

{'score': 9.0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}

threat_severity

Important

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome
Type Values Removed Values Added
Title Insufficient Validation of WebShare Leading to Potential Sandbox Escape on Android Chrome
Type Values Removed Values Added
Description Insufficient validation of untrusted input in WebShare in Google Chrome on Android prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
Weaknesses CWE-20
References

Sources

Status
PUBLISHED
Assigner
Chrome
Published
Updated
May 30, 2026, 3:57 AM
Reserved
May 28, 2026, 5:25 PM
Status
Analyzed
Published
May 28, 2026, 11:16 PM
Modified
Jul 21, 2026, 11:10 AM
Severity
Important
Public date
May 27, 2026, 12:00 AM