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PatchSiren cyber security CVE debrief

CVE-2026-113051 Google CVE debrief

A memory corruption vulnerability in Google Chrome's CSS processing prior to version 156.0.8078.47 could allow a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. This issue, tracked as CVE-2026-113051, was publicly disclosed on October 20, 2026. The vulnerability affects Google Chrome's CSS processing, which is a critical component for rendering web pages. Defenders should assess and prioritize patching to mitigate potential risks. The NVD entry was last modified on October 21, 2026, indicating a possible update to the vulnerability assessment or additional information.

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 those exposed to untrusted web content, should assess and prioritize patching to mitigate potential risks.

Why it matters

CVE-2026-113051 is a memory corruption vulnerability in Google Chrome's CSS processing that could allow a remote attacker to potentially read memory inside the sandbox. Defenders should prioritize patching and assessing exposure to untrusted web content.

  • Verify patch application to prevent potential memory corruption
  • Assess and mitigate exposure of Chrome installations to untrusted web content
  • Monitor for potential exploitation attempts targeting this vulnerability

Technical summary

A memory corruption vulnerability in Google Chrome's CSS processing prior to version 156.0.8078.47 could allow a remote attacker to potentially read memory inside the sandbox via a crafted HTML page. The vulnerability is caused by a flaw in the CSS processing component, which is responsible for rendering web pages. This flaw could be exploited by a remote attacker to potentially read memory inside the sandbox. Defenders should prioritize verifying and applying the patch to Google Chrome, focusing on systems and users exposed to untrusted web content.

Defensive priority

Defenders should prioritize verifying and applying the patch to Google Chrome, focusing on systems and users exposed to untrusted web content.

Recommended defensive actions

  • Verify and apply the patch to Google Chrome
  • Assess exposure of Chrome installations to untrusted web content
  • Monitor for potential exploitation attempts
  • 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
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the memory corruption vulnerability in Google Chrome's CSS processing. The issue was publicly disclosed on October 20, 2026. The CVE record and NVD entry are official sources that provide information on the vulnerability, but their details are limited. Defenders should verify patch application and assess exposure to untrusted web content. The vulnerability's impact is currently assessed as Medium by Chromium, but this assessment may change as more information becomes available.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-113051 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113051

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-113051 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113051

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

Supplemental references

  • CVE-2026-113051

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113051.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/504107363

    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.