Description

Mitigation bypass in the DOM: postMessage component. This vulnerability was fixed in Firefox 150 and Thunderbird 150.

INFO

Published Date :

2026-04-21T12:40:51.382Z

Last Modified :

2026-04-21T23:34:47.512Z

Source :

mozilla
AFFECTED PRODUCTS

The following products are affected by CVE-2026-6755 vulnerability.

Vendors Products
Mozilla
  • Firefox
  • Thunderbird
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6755.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1880429 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-6755 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-6755 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-30/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-30/#CVE-2026-6755 cve-icon
https://www.mozilla.org/security/advisories/mfsa2026-33/ cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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