CVE-2026-12315
Description
Mitigation bypass in the DOM Security component in Firefox before 152 and Firefox ESR before 140.12 could allow an attacker to circumvent security measures.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Mitigation bypass in the DOM Security component in Firefox before 152 and Firefox ESR before 140.12 could allow an attacker to circumvent security measures.
Vulnerability
A mitigation bypass vulnerability exists in the DOM Security component of Firefox. Affected versions are Firefox prior to 152 and Firefox ESR prior to 140.12 [1][2].
Exploitation
No specific exploitation details are provided in the available references. It is assumed that an attacker could trigger the bypass under certain conditions.
Impact
Successful exploitation could allow an attacker to bypass security mitigations, potentially leading to further compromise. The impact is rated high.
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
3- Range: <152
- Range: <152
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.