CVE-2026-113277: Information leak in CustomTabs

Q: Which deployments are affected?

Google Chrome on Android is affected before version 156.0.8078.47. The issue is in CustomTabs.

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

An attacker can trigger the issue remotely using a crafted HTML page. Successful exploitation allows reading memory within the browser sandbox.

Q: Is there evidence that this leads to a sandbox escape?

No. The available information describes memory disclosure inside the sandbox only and does not state that the attacker can escape the sandbox.

Published Aug 26, 2026

Updated

Chromium CVE-2026-113277: Out of bounds read

Other sources

Information leak in CustomTabs in Google Chrome on on Android prior to 156.0.8078.47 allowed a local attacker to leak sensitive information via a co-installed app. (Chromium security severity: Medium)

— NVD

Out of bounds read in CustomTabs in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to read memory inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

— MITRE

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

Credit

mute1008

Affected Software

9 affected componentsFixes available

Microsoft Edge (Chromium-based)<156.0.4314.42

156.0.4314.42

All of the following

Google Chrome<156.0.8078.47

Google Android

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 on Android to a version that resolves this vulnerability.
Fixed in 156.0.8078.47

Event History

Aug 26, 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 deployments are affected?

Google Chrome on Android is affected before version 156.0.8078.47. The issue is in CustomTabs.

What does an attacker need to exploit this issue?

An attacker can trigger the issue remotely using a crafted HTML page. Successful exploitation allows reading memory within the browser sandbox.

Is there evidence that this leads to a sandbox escape?

No. The available information describes memory disclosure inside the sandbox only and does not state that the attacker can escape the sandbox.

CVE-2026-113277: Information leak in CustomTabs

Other sources

Credit

Affected Software

Remediation

Event History

Parent advisories

Peer vulnerabilities

Frequently Asked Questions

Which deployments are affected?

What does an attacker need to exploit this issue?

Is there evidence that this leads to a sandbox escape?

Company

Resources

Contact