CVE-2026-13851: Insufficient validation of untrusted input in WebAppInstalls in Google Chrome on Android prior to 150.0.7871.4

Q: How do I fix CVE-2026-13851?

chrome: upgrade to 150.0.7871.47. Exact commands for each OS are on this page.

Q: Is CVE-2026-13851 being exploited?

CVE-2026-13851 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-13851 affect?

CVE-2026-13851 affects chrome. Severity is critical (CVSS 9.1). 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)

Q: How urgent is CVE-2026-13851?

Priority 43/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2026-13851 is a critical-severity flaw (CVSS 9.1) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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)

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-06-30
Last modified	2026-10-25

Publisher (CNA): Chrome · Vendor: google

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-30 23:16 UTCPublished CVE record published
2026-10-25 21:10 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 150.0.7871.47

Fixed in: 150.0.7871.47

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy chrome || rpm -q chrome || chrome --version

2. UPGRADE to 150.0.7871.47 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade chrome

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade chrome

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-13851?

chrome: upgrade to 150.0.7871.47. Exact commands for each OS are on this page.

Is CVE-2026-13851 being exploited?

CVE-2026-13851 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-13851 affect?

CVE-2026-13851 affects chrome. Severity is critical (CVSS 9.1). 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)

How urgent is CVE-2026-13851?

Priority 43/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities · Google Chrome vulnerabilities · Chromium vulnerabilities

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References

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