CVE-2026-12311

MediumCVSS 4.7/10Last modified Jun 17, 2026

Description

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

Metrics

CVSS 3.1 4.7/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

Weakness enumeration

CWE-200 CWE-688

Affected software

No affected versions have been published.

Timeline

Published: Jun 16, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

Related CVEs from 2026

CVE-2026-123127.5Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbir CVE-2026-123134.7Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox E CVE-2026-123147.5Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbir CVE-2026-123159.1Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thun CVE-2026-123169.1Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123177.5Memory safety bug fixed in Thunderbird 152. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123187.3Incorrect boundary conditions in the Libraries component in NSS. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123196.5Denial-of-service in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-12326.8A medium-severity vulnerability has been identified in BeyondTrust Privilege Management for Windows versions <=25.7. Under certain condition CVE-2026-123204.3Information disclosure in the Password Manager component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123215.4JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.CVE-2026-123225.4Clickjacking issue in the Widget: Gtk component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.