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CVE-2026-11305 Google CVE debrief

CVE-2026-11305 is a use after free vulnerability in PDFium in Google Chrome prior to 149.0.7827.53. This vulnerability allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted PDF file. The Chromium security severity is rated as Low, but the CVSS score is 8.8, indicating a HIGH severity. The CVE was published on 2026-06-05T00:17:08.477Z and modified on 2026-06-08T18:04:34.180Z.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-07-23
Advisory published
2026-06-05
Advisory updated
2026-07-23

Who should care

Users of Google Chrome prior to version 149.0.7827.53 should update to the latest version to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a use after free issue in PDFium, which is a library used by Google Chrome to render PDF files. An attacker can exploit this vulnerability by crafting a malicious PDF file that, when opened in Google Chrome, can execute arbitrary code inside the browser's sandbox.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.
  • Avoid opening suspicious PDF files from untrusted sources.

Evidence notes

The CVE record and NVD detail can be found at [cve-org] and [nvd], respectively. Additional information can be found in the Chrome release notes [ref-4] and the Chromium issue tracker [ref-5].

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11305 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11305

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

  • CVE-2026-11305 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11305

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

Supplemental 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.