Unrated severityNVD Advisory· Published Dec 22, 2022· Updated Apr 16, 2025
CVE-2021-4140
CVE-2021-4140
Description
It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
50< 91.5+ 3 more
- (no CPE)range: < 91.5
- (no CPE)range: < 96
- (no CPE)range: unspecified
- (no CPE)range: unspecified
< 91.5+ 1 more
- (no CPE)range: < 91.5
- (no CPE)range: unspecified
- osv-coords44 versionspkg:rpm/almalinux/firefoxpkg:rpm/almalinux/thunderbirdpkg:rpm/opensuse/civetweb&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Manager%20Server%204.1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3
< 91.5.0-1.el8_5.alma+ 43 more
- (no CPE)range: < 91.5.0-1.el8_5.alma
- (no CPE)range: < 91.5.0-1.el8_5.alma.plus
- (no CPE)range: < 1.15-lp153.2.3.1
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 96.0-1.1
- (no CPE)range: < 91.5.0-8.51.1
- (no CPE)range: < 91.5.0-1.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-78.159.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-150.15.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-152.12.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-112.86.1
- (no CPE)range: < 91.5.0-8.51.1
Patches
Vulnerability mechanics
References
4News mentions
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