Critical severity9.8NVD Advisory· Published Jan 13, 2026· Updated Jul 15, 2026
CVE-2026-0879
CVE-2026-0879
Description
Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
36cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*range: <147.0
- cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*range: <115.32.0
- (no CPE)range: before 147
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*+ 2 more
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*range: <147.0
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:*range: <140.7.0
- (no CPE)range: before 147
- osv-coords30 versionspkg:apk/chainguard/firefoxpkg:apk/chainguard/firefox-esrpkg:apk/wolfi/firefoxpkg:rpm/almalinux/firefoxpkg:rpm/almalinux/firefox-x11pkg:rpm/almalinux/thunderbirdpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP7pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2016.0pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20LTSS%20Extended%20Security%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP7pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP7
< 140.7-r0+ 29 more
- (no CPE)range: < 140.7-r0
- (no CPE)range: < 140.7-r0
- (no CPE)range: < 140.7-r0
- (no CPE)range: < 140.7.0-1.el8_10.alma.1
- (no CPE)range: < 140.7.0-1.el9_7.alma.1
- (no CPE)range: < 140.7.0-1.el9_7.alma.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-160000.1.1
- (no CPE)range: < 147.0-1.1
- (no CPE)range: < 140.7.0-150200.8.251.1
- (no CPE)range: < 140.8.1-bp160.1.1
- (no CPE)range: < 140.7.0-1.1
- (no CPE)range: < 140.7.0-1.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-112.295.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-160000.1.1
- (no CPE)range: < 140.7.0-112.295.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-150200.152.216.1
- (no CPE)range: < 140.7.0-160000.1.1
- (no CPE)range: < 140.7.0-150200.8.251.1
- (no CPE)range: < 140.7.0-150200.8.251.1
Patches
Vulnerability mechanics
References
32- www.mozilla.org/security/advisories/mfsa2026-01/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-02/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-03/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-04/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-05/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
- access.redhat.com/errata/RHSA-2026:0667nvd
- access.redhat.com/errata/RHSA-2026:0694nvd
- access.redhat.com/errata/RHSA-2026:0924nvd
- access.redhat.com/errata/RHSA-2026:1320nvd
- access.redhat.com/errata/RHSA-2026:1413nvd
- access.redhat.com/errata/RHSA-2026:1414nvd
- access.redhat.com/errata/RHSA-2026:1415nvd
- access.redhat.com/errata/RHSA-2026:1461nvd
- access.redhat.com/errata/RHSA-2026:1462nvd
- access.redhat.com/errata/RHSA-2026:1471nvd
- access.redhat.com/errata/RHSA-2026:1487nvd
- access.redhat.com/errata/RHSA-2026:2041nvd
- access.redhat.com/errata/RHSA-2026:2043nvd
- access.redhat.com/errata/RHSA-2026:2044nvd
- access.redhat.com/errata/RHSA-2026:2047nvd
- access.redhat.com/errata/RHSA-2026:2069nvd
- access.redhat.com/errata/RHSA-2026:2070nvd
- access.redhat.com/errata/RHSA-2026:2073nvd
- access.redhat.com/errata/RHSA-2026:2074nvd
- access.redhat.com/errata/RHSA-2026:2220nvd
- access.redhat.com/errata/RHSA-2026:2231nvd
- access.redhat.com/errata/RHSA-2026:2271nvd
- access.redhat.com/errata/RHSA-2026:2286nvd
- access.redhat.com/security/cve/CVE-2026-0879nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-0879.jsonnvd
News mentions
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