PatchSiren cyber security CVE debrief
CVE-2026-11259 Google CVE debrief
CVE-2026-11259 is a vulnerability in Google Chrome prior to version 149.0.7827.53. The issue is related to insufficient validation of untrusted input in the Cast feature, which could allow a remote attacker to bypass the same-origin policy via a crafted HTML page. The vulnerability has a CVSS score of 4.3, indicating a medium severity level.
- Vendor
- Product
- Chrome
- CVSS
- MEDIUM 4.3
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-06-05
- Original CVE updated
- 2026-06-08
- Advisory published
- 2026-06-05
- Advisory updated
- 2026-06-08
Who should care
Users of Google Chrome, particularly those who use the Cast feature, should be aware of this vulnerability and ensure they are running the latest version of Chrome (149.0.7827.53 or later).
Technical summary
The vulnerability is caused by insufficient validation of untrusted input in the Cast feature of Google Chrome. This could allow a remote attacker to bypass the same-origin policy via a crafted HTML page.
Defensive priority
Medium
Recommended defensive actions
- Update Google Chrome to version 149.0.7827.53 or later.
- Use a web browser other than Google Chrome until an update is available.
Evidence notes
The CVE record and NVD detail can be found at [cve-org] and [nvd], respectively.
Official resources
-
CVE-2026-11259 CVE record
CVE.org
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CVE-2026-11259 NVD detail
NVD
-
Source item URL
nvd_modified
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Mitigation or vendor reference
[email protected] - Vendor Advisory
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Source reference
[email protected] - Permissions Required
CVE-2026-11259 was published on [cvePublishedAt] and modified on [cveModifiedAt].