CVE-2024-7518

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-08-06 · updated 2026-06-17
Weakness: CWE-1021

Description

Select options could obscure the fullscreen notification dialog. This could be used by a malicious site to perform a spoofing attack. This vulnerability affects Firefox < 129, Firefox ESR < 128.1, and Thunderbird < 128.1.

Affected products

Mozilla Firefox: before 129 — fixed in 129
Mozilla Firefox ESR: before 128.1 — fixed in 128.1
Mozilla Thunderbird: before 128.1 — fixed in 128.1

How to fix

Upgrade to a fixed version: Mozilla Firefox 129; Mozilla Firefox ESR 128.1; Mozilla Thunderbird 128.1. Check the vendor advisory for mitigations.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1875354
https://www.mozilla.org/security/advisories/mfsa2024-33/
https://www.mozilla.org/security/advisories/mfsa2024-35/
https://www.mozilla.org/security/advisories/mfsa2024-37/

Get alerted when CVE-2024-7518 or the next vulnerability affects your stack