CVE-2026-13851

CRITICAL 9.1

Published 2026-06-30 · Last modified 2026-07-01

Insufficient validation of untrusted input in WebAppInstalls in Google Chrome on Android prior to 150.0.7871.47 allowed a local attacker to bypass discretionary access control via a crafted HTML page. (Chromium security severity: High)

ELEVATED IMPACT

Severe if exploited (CVSS 9.1), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.1%chance of exploitation in 30 days · 4th percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

9.1CVSS 3.1 · CRITICAL

ConfidentialityNone
IntegrityHigh
AvailabilityHigh

What an attacker needs

✓Access: Reachable over the network — no local access needed
✓Privileges: No account or privileges required
✓User interaction: No user interaction needed
✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Affected

Vendors Google

Products Chrome

Weakness (CWE)

CWE-20: Improper input validation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

References

Technical & other

Sources: NVD · CVE.org · EPSS