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, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird < 128.6.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-0240.json"
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "128.6.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "134.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "128.6.0"
}
]
},
{
"events": [
{
"introduced": "129.0"
},
{
"fixed": "134.0"
}
]
}
]