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CVE-2026-17982 Google CVE debrief

CVE-2026-17982 debrief: Google Chrome insufficient validation of untrusted input in Cast allows remote attackers to bypass same origin policy via crafted HTML pages. This vulnerability, classified as Low severity by Chromium, affects Google Chrome versions prior to 151.0.7922.72. The vulnerability allows attackers to bypass same origin policy, potentially leading to unauthorized access or data exposure. Defenders should assess exposure, prioritize verification, and apply patches. The CVE record was published on 2026-07-30T01:17:02.793Z and has not been modified since then.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-30
Original CVE updated
2026-10-23
Advisory published
2026-07-30
Advisory updated
2026-10-23

Who should care

Google Chrome users, particularly those with exposure to untrusted input in Cast, should assess and prioritize patching. This includes operators managing Chrome deployments, platform administrators, vulnerability management teams, and security teams who need to review and apply patches or updates to Google Chrome to address insufficient validation of untrusted input in Cast.

Why it matters

CVE-2026-17982: Google Chrome insufficient validation of untrusted input in Cast allows remote attackers to bypass same origin policy. Defenders should assess exposure, prioritize verification, and apply patches.

  • Remote attackers may bypass same origin policy via crafted HTML pages, potentially leading to unauthorized access or data exposure.
  • Google Chrome users may be vulnerable to attacks exploiting this insufficient validation of untrusted input in Cast.
  • Defenders should prioritize patching and verification to prevent potential exploitation.

Technical summary

Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allows remote attackers to bypass same origin policy via crafted HTML pages. This vulnerability, classified as Low severity by Chromium, affects Google Chrome users who may be vulnerable to attacks exploiting this insufficient validation of untrusted input in Cast. Defenders should prioritize patching and verification to prevent potential exploitation.

Defensive priority

Assess exposure, prioritize verification, and apply patches for Google Chrome users.

Recommended defensive actions

  • Inventory and assess Google Chrome versions prior to 151.0.7922.72 for exposure.
  • Apply patches or updates to Google Chrome to address insufficient validation of untrusted input in Cast.
  • Monitor Google Chrome for future updates and advisories related to this vulnerability.

Evidence notes

Official CVE Program record and NIST NVD detail page provide vulnerability metadata and assessment. Google Chrome release notes and issue tracker offer additional context.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-17982 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-17982

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

  • CVE-2026-17982 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-17982

    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.