PatchSiren cyber security CVE debrief

CVE-2026-113120 Google CVE debrief

CVE-2026-113120 is an improper input validation vulnerability in Google Chrome prior to version 156.0.8078.47. This vulnerability could potentially allow a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. The CVE record was published on 2026-10-20T21:02:29.990Z and was last modified on 2026-10-21T03:58:37.595Z. Defenders should assess exposure and apply the patch. The vulnerability exists in the Media component of Google Chrome. The CVE record and source item provide details on the vulnerability, including its description and affected versions.

Vendor: Google
Product: Chrome
CVSS: Unknown
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-10-20
Original CVE updated: 2026-10-21
Advisory published: 2026-10-20
Advisory updated: 2026-10-21

Who should care

Defenders responsible for managing Google Chrome installations, particularly in environments where remote access or untrusted input is common, should assess exposure and apply the patch.

Why it matters

CVE-2026-113120 is a medium-severity vulnerability in Google Chrome that could allow remote code execution inside the sandbox. Defenders managing Chrome installations, especially in high-risk environments, should assess exposure and apply the patch.

Potential remote code execution inside the sandbox
Requires patching Google Chrome to version 156.0.8078.47 or later
Defenders should verify inventory of Google Chrome installations
Monitoring for future updates and patches is recommended

Technical summary

The vulnerability is caused by improper input validation in the Media component of Google Chrome prior to version 156.0.8078.47. A remote attacker could potentially exploit this vulnerability to execute arbitrary code inside the sandbox via a crafted HTML page. The vulnerability has a medium severity and defenders managing Chrome installations, especially in high-risk environments, should assess exposure and apply the patch. The CVE record and source item provide details on the vulnerability, including its description and affected versions.

Defensive priority

Medium

Recommended defensive actions

Assess exposure and apply the patch for Google Chrome version 156.0.8078.47 or later
Review and update inventory of Google Chrome installations to ensure they are up-to-date
Monitor Google Chrome releases for future updates and patches
Verify the integrity of Google Chrome installations
Review compensating controls for exposed systems while remediation is scheduled and verified
Check relevant monitoring, detection, and logs for exposed assets that need extra review
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 and affected versions. However, the CVSS score and severity are not provided. The vulnerability is caused by improper input validation in the Media component of Google Chrome prior to version 156.0.8078.47. The CVE record was published on 2026-10-20T21:02:29.990Z and has not been modified since then. The source item provides CVE-2026-113120 details.

Sources and references

Verified primary and authoritative sources

CVE-2026-113120 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-113120

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-113120 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113120

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

CVE-2026-113120
Unverified legacy reference

URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113120.json

cve_program_cvelist_v5
Source reference
Unverified legacy reference

URL: https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html

Supplemental source
Source reference
Unverified legacy reference

URL: https://issues.chromium.org/issues/560476932

Supplemental source

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.