CVE-2026-12313
Description
Information disclosure and sandbox escape in Firefox's Security: Process Sandboxing component, fixed in Firefox 152 and Firefox ESR 140.12.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Information disclosure and sandbox escape in Firefox's Security: Process Sandboxing component, fixed in Firefox 152 and Firefox ESR 140.12.
Vulnerability
The vulnerability resides in the Security: Process Sandboxing component of Firefox. It allows information disclosure and sandbox escape. Affected versions include Firefox prior to 152 and Firefox ESR prior to 140.12 [1][2].
Exploitation
No specific exploitation details are disclosed in the available references. An attacker would need to be able to trigger the vulnerable code path, likely through a crafted web page or content.
Impact
Successful exploitation could lead to information disclosure and escape of the sandbox, potentially allowing an attacker to access sensitive data or execute code outside the sandbox.
Mitigation
The vulnerability is fixed in Firefox 152 and Firefox ESR 140.12, released on June 16, 2026 [1][2]. Users should update to these versions or later.
AI Insight generated on Jun 16, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Range: <152, <140.12 (ESR)
- Range: <152, <140.12 (ESR)
Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
5News mentions
0No linked articles in our index yet.