CVE-2026-113263: Use after free in Core in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to pote

Q: How do I fix CVE-2026-113263?

chrome: upgrade to 156.0.8078.47. Exact commands for each OS are on this page.

Q: Is CVE-2026-113263 being exploited?

CVE-2026-113263 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-2026-113263 affect?

CVE-2026-113263 affects chrome. Severity is critical (CVSS 9.6). Use after free in Core in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Q: How urgent is CVE-2026-113263?

Priority 48/100. Critical severity; Public exploit reference

This month

CRITICAL 9.6UPGRADE

CVE-2026-113263 is a critical-severity flaw (CVSS 9.6) affecting chrome. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Use after free in Core in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 61%)
CISA exploited list	No
Weakness	CWE-416
Published	2026-10-20
Last modified	2026-10-22

Publisher (CNA): Chrome · Vendor: google

Am I affected?

Timeline

2026-10-20Published CVE record published
2026-10-22 23:18 UTCUpdated Record last modified

google chrome UPGRADE

Affected: < 156.0.8078.47

Fixed in: 156.0.8078.47

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 156.0.8078.47 (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.

Exact fixes by distribution

Ubuntu 22.04 · chromium-browser · NOT AFFECTED

Ubuntu 24.04 · chromium-browser · NOT AFFECTED

Debian 12 · chromium · FIXED · 156.0.8078.47-1~deb12u1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "156.0.8078.47-1~deb12u1" && echo PATCHED || echo STILL-VULNERABLE

Debian 13 · chromium · FIXED · 156.0.8078.47-1~deb13u1

sudo apt update && sudo apt install --only-upgrade chromium dpkg --compare-versions "$(dpkg-query -W -f='${Version}' chromium)" ge "156.0.8078.47-1~deb13u1" && echo PATCHED || echo STILL-VULNERABLE

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-2026-113263?

chrome: upgrade to 156.0.8078.47. Exact commands for each OS are on this page.

Is CVE-2026-113263 being exploited?

CVE-2026-113263 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-2026-113263 affect?

CVE-2026-113263 affects chrome. Severity is critical (CVSS 9.6). Use after free in Core in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

How urgent is CVE-2026-113263?

Priority 48/100. Critical severity; Public exploit reference

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References

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