Sandbox escape in the Security: Process Sandboxing component
Summary
| CVE | CVE-2026-12296 |
|---|---|
| State | PUBLISHED |
| Assigner | mozilla |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-06-16 13:16:29 UTC |
| Updated | 2026-06-16 17:16:33 UTC |
| Description | 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. |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Mozilla | Firefox | unaffected 140.12 140.* rpm | Not specified |
| CNA | Mozilla | Firefox | unaffected 152 * rpm | Not specified |
| CNA | Mozilla | Thunderbird | unaffected 140.12 140.* rpm | Not specified |
| CNA | Mozilla | Thunderbird | unaffected 152 * rpm | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| www.mozilla.org/security/advisories/mfsa2026-58 | [email protected] | www.mozilla.org | |
| bugzilla.mozilla.org/show_bug.cgi | [email protected] | bugzilla.mozilla.org | |
| www.mozilla.org/security/advisories/mfsa2026-57 | [email protected] | www.mozilla.org | |
| www.mozilla.org/security/advisories/mfsa2026-61 | [email protected] | www.mozilla.org | |
| www.mozilla.org/security/advisories/mfsa2026-60 | [email protected] | www.mozilla.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Yaqoub Aldurayhim (en)
There are currently no legacy QID mappings associated with this CVE.