CVE-2026-12295Critical· 9.6▾ AbyssalPoC availableSandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
▾ Abyssal zone — Critical with a public exploit or in-the-wild use
impact 52.8 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Jul 29.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
1 GitHub repo
Sandbox escape in the DOM: Navigation component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
firefox < 115.37.0firefox < 152.0.0firefox >= 128.0, < 140.12.0thunderbird < 140.12.0thunderbird < 152.0.0Upgrade past the affected range:
firefox 140.12.0thunderbird 152.0.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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CVE-2025-14321Critical· 9.8Use-after-free in the WebRTC: Signaling component
CVE-2022-26485High· 8.8Removing an XSLT parameter during processing could have lead to an exploitable use-after-free
CVE-2024-9680Critical· 9.8An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines
CVE-2026-118008High· 8.8Privilege escalation in the DOM: Navigation component
CVE-2026-117999NoneRace condition in the IPC component