CVE-2026-113274: site scripting in ReadingMode

Q: Which Chrome versions are affected?

Google Chrome versions prior to 156.0.8078.47 are affected. Updating to version 156.0.8078.47 or later removes the affected version range described here.

Q: What does an attacker need to exploit this issue?

The attacker needs to persuade or otherwise cause a user to load a crafted HTML page remotely. The described code execution occurs inside Chrome's sandbox.

Q: Who is realistically exposed?

Users running Chrome before 156.0.8078.47 who browse attacker-controlled or malicious web content are exposed to the described attack path.

Published Oct 20, 2026

Updated

Chromium CVE-2026-113274: Use after free

Other sources

Cross-site scripting in ReadingMode in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)

— NVD

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

Use after free in ReadingMode in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)

— MITRE

Credit

chipsec

Affected Software

9 affected componentsFixes available

Google Chrome<156.0.8078.47

Microsoft Edge (Chromium-based)<156.0.4314.42

156.0.4314.42

Google Chrome<156.0.8078.47

Microsoft Edge<156.0.4314.42

156.0.4314.42

Google Chrome<156.0.8078.47

156.0.8078.47

debian/chromium<156.0.8078.47-1~deb12u1

156.0.8078.47-1~deb12u1

debian/chromium<156.0.8078.47-1~deb13u1

156.0.8078.47-1~deb13u1

debian/chromium<156.0.8078.47-1

156.0.8078.47-1

debian/chromium<=150.0.7871.100-1~deb12u1, <=150.0.7871.181-1~deb13u1

156.0.8078.79-1~deb12u1156.0.8078.79-1~deb13u1156.0.8078.79-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 156.0.4314.42
Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 156.0.8078.47
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.47-1~deb12u1
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.47-1~deb13u1
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.47-1
Upgrade
Upgrade debian/chromium to a version that resolves this vulnerability.
Fixed in 156.0.8078.79-1~deb12u1Fixed in 156.0.8078.79-1~deb13u1Fixed in 156.0.8078.79-1
Upgrade
Upgrade Google Chrome to a version that resolves this vulnerability.
Fixed in 156.0.8078.47

Event History

Oct 6, 2026

CVE Published

12:00 AM

Data Sourced

12:00 AM

SeverityWeaknessAffected Software

Oct 20, 2026

CVE Published

via MITRE·09:02 PM

Data Sourced

via MITRE·09:02 PM

DescriptionWeakness

Data Sourced

via NVD·10:19 PM

DescriptionSeverityWeaknessAffected Software

Data Sourced

via OSV·10:19 PM

DescriptionSeverityAffected Software

Oct 23, 2026

Data Sourced

via Microsoft·02:43 AM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

Which Chrome versions are affected?

Google Chrome versions prior to 156.0.8078.47 are affected. Updating to version 156.0.8078.47 or later removes the affected version range described here.

What does an attacker need to exploit this issue?

The attacker needs to persuade or otherwise cause a user to load a crafted HTML page remotely. The described code execution occurs inside Chrome's sandbox.

Who is realistically exposed?

Users running Chrome before 156.0.8078.47 who browse attacker-controlled or malicious web content are exposed to the described attack path.

CVE-2026-113274: site scripting in ReadingMode

Other sources

Credit

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

Which Chrome versions are affected?

What does an attacker need to exploit this issue?

Who is realistically exposed?

Company

Resources

Contact