CVE-2025-0240 Information

Description

Parsing a JavaScript module as JSON could under some circumstances cause cross-compartment access which may result in a use-after-free. This vulnerability affects Firefox < 134 and Firefox ESR < 128.6.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1929623 https://www.mozilla.org/security/advisories/mfsa2025-01/ https://www.mozilla.org/security/advisories/mfsa2025-02/