CVE-2026-12313

EUVD-2026-37104
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.7 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
Affected Products (NVD)
VendorProductVersion
mozillafirefox
𝑥
< 152.0
mozillafirefox_esr
140.0 ≤
𝑥
< 140.12.0
mozillathunderbird
𝑥
< 152.0.0
mozillathunderbird_esr
140.0 ≤
𝑥
< 140.12.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
firefox
sid
153.0-1
fixed
firefox-esr
bookworm
140.12.0esr-1~deb12u1
fixed
bookworm (security)
140.13.0esr-1~deb12u1
fixed
bullseye
vulnerable
bullseye (security)
140.13.0esr-1~deb11u1
fixed
forky
140.13.0esr-2
fixed
sid
140.13.0esr-2
fixed
trixie
140.12.0esr-1~deb13u1
fixed
trixie (security)
140.13.0esr-1~deb13u1
fixed
thunderbird
bookworm
1:140.12.0esr-1~deb12u1
fixed
bookworm (security)
1:140.12.0esr-1~deb12u1
fixed
bullseye
vulnerable
bullseye (security)
1:140.12.0esr-1~deb11u1
fixed
forky
1:140.12.0esr-1
fixed
sid
1:140.12.0esr-1
fixed
trixie
1:140.12.0esr-1~deb13u1
fixed
trixie (security)
1:140.12.0esr-1~deb13u1
fixed
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
MozillaFirefox
suse enterprise desktop 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise server 12 SP3
140.12.0-112.321.1
fixed
suse enterprise server 12 SP5
140.12.0-112.321.1
fixed
suse enterprise server 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP7
140.12.0-150200.152.245.1
fixed
MozillaFirefox-devel
suse enterprise desktop 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise server 12 SP3
140.12.0-112.321.1
fixed
suse enterprise server 12 SP5
140.12.0-112.321.1
fixed
suse enterprise server 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP7
140.12.0-150200.152.245.1
fixed
MozillaFirefox-translations-common
suse enterprise desktop 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise server 12 SP3
140.12.0-112.321.1
fixed
suse enterprise server 12 SP5
140.12.0-112.321.1
fixed
suse enterprise server 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP7
140.12.0-150200.152.245.1
fixed
MozillaFirefox-translations-other
suse enterprise desktop 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise sap 15 SP7
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP4
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP5
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP6
140.12.0-150200.152.245.1
fixed
suse enterprise server 15 SP7
140.12.0-150200.152.245.1
fixed
MozillaThunderbird
suse enterprise desktop 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise sap 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise server 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise workstation 15 SP7
140.12.0-150200.8.277.1
fixed
MozillaThunderbird-translations-common
suse enterprise desktop 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise sap 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise server 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise workstation 15 SP7
140.12.0-150200.8.277.1
fixed
MozillaThunderbird-translations-other
suse enterprise desktop 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise sap 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise server 15 SP7
140.12.0-150200.8.277.1
fixed
suse enterprise workstation 15 SP7
140.12.0-150200.8.277.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
firefox
RHEL 9
0:140.12.0-1.el9_8
fixed
firefox-x11
RHEL 9
0:140.12.0-1.el9_8
fixed
thunderbird
RHEL 9
0:140.12.0-1.el9_8
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
firefox
Amazon Linux 2023
0:140.12.0-1.amzn2023.0.1
fixed
firefox-debuginfo
Amazon Linux 2023
0:140.12.0-1.amzn2023.0.1
fixed
firefox-debugsource
Amazon Linux 2023
0:140.12.0-1.amzn2023.0.1
fixed
thunderbird
Amazon Linux 2
0:140.12.0-1.amzn2.0.1
fixed
Common Weakness Enumeration
References
https://bugzilla.mozilla.org/show_bug.cgi?id=2040477
https://www.mozilla.org/security/advisories/mfsa2026-57/
https://www.mozilla.org/security/advisories/mfsa2026-58/
https://www.mozilla.org/security/advisories/mfsa2026-60/
https://www.mozilla.org/security/advisories/mfsa2026-61/