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5.4 Medium

CVE-2025-0237 The WebChannel API, which is used to transport various information across processes, did not check the sending principal…

Description

The WebChannel API, which is used to transport various information across processes, did not check the sending principal but rather accepted the principal being sent. This could have led to privilege escalation attacks. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.

Affected products and versions

Product Affected versions Fixed in
Firefox 134 earliest → < 134 134
Firefox 128.6 earliest → < 128.6 128.6
Firefox ESR 128.6 earliest → < 128.6 128.6
Thunderbird 134 earliest → < 134 134
Thunderbird 128.6 earliest → < 128.6 128.6

References

Timeline

  1. Published
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