CVE-2024-10460

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-10-29 · updated 2026-06-17
Weakness: CWE-346

Description

The origin of an external protocol handler prompt could have been obscured using a data: URL within an `iframe`. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Thunderbird < 128.4, and Thunderbird < 132.

Affected products

Mozilla Firefox: before 128.4.0; before 132.0 — fixed in 128.4.0, 132.0
Mozilla Thunderbird: before 128.4; from 129 before 132 — fixed in 128.4, 132

How to fix

Upgrade to a fixed version: Mozilla Firefox 128.4.0, 132.0; Mozilla Thunderbird 128.4, 132. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1912537
https://www.mozilla.org/security/advisories/mfsa2024-55/
https://www.mozilla.org/security/advisories/mfsa2024-56/
https://www.mozilla.org/security/advisories/mfsa2024-58/
https://www.mozilla.org/security/advisories/mfsa2024-59/
https://lists.debian.org/debian-lts-announce/2024/10/msg00034.html
https://lists.debian.org/debian-lts-announce/2024/11/msg00001.html

Get alerted when CVE-2024-10460 or the next vulnerability affects your stack