CVE-2026-113274 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome deployments, especially in environments with internet-facing or untrusted input processing roles, should assess exposure and apply patches or updates to mitigate this vulnerability.

Why it matters

CVE-2026-113274 is a use-after-free vulnerability in Google Chrome's ReadingMode that allows remote attackers to execute arbitrary code within the sandbox. Defenders should prioritize assessing exposure and applying patches for Google Chrome versions prior to 156.0.8078.47.

• Potential remote code execution within the sandbox
• Need for patching or updating Google Chrome to version 156.0.8078.47 or later
• Monitoring for potential exploitation attempts targeting this vulnerability
• Reviewing incident response plans to address potential sandbox escapes

Technical summary

The CVE-2026-113274 vulnerability is a use-after-free issue in Google Chrome's ReadingMode. This vulnerability allows a remote attacker to execute arbitrary code within the sandbox via a crafted HTML page. The issue was reported with a low severity rating by the Chromium security team and affects Google Chrome versions prior to 156.0.8078.47. The vulnerability can be mitigated by applying patches or updates to Google Chrome to version 156.0.8078.47 or later. Defenders should prioritize assessing exposure and applying patches for Google Chrome versions prior to 156.0.8078.47, especially for systems and users with internet-facing or untrusted input processing roles.

Defensive priority

Defenders should prioritize assessing exposure and applying patches for Google Chrome versions prior to 156.0.8078.47, especially for systems and users with internet-facing or untrusted input processing roles.

Recommended defensive actions

• Assess exposure for Google Chrome versions prior to 156.0.8078.47
• Apply patches or updates to Google Chrome to version 156.0.8078.47 or later
• Monitor for potential exploitation attempts targeting this vulnerability
• Review and update incident response plans to address potential sandbox escapes
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description, affected versions, and references to vendor advisories. However, specific details about exploitation or victim impact are not provided.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.