Unrated severityNVD Advisory· Published Sep 11, 2023· Updated Dec 18, 2025
XLL file extensions were downloadable without warnings
CVE-2023-4581
Description
Excel .xll add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
37< 115.2+ 3 more
- (no CPE)range: < 115.2
- (no CPE)range: < 117
- (no CPE)range: unspecified
- (no CPE)range: unspecified
< 115.2+ 1 more
- (no CPE)range: < 115.2
- (no CPE)range: unspecified
- osv-coords31 versionspkg:rpm/almalinux/firefoxpkg:rpm/almalinux/firefox-x11pkg:rpm/almalinux/thunderbirdpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.4pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Leap%2015.5pkg:rpm/opensuse/MozillaThunderbird&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%207.1pkg: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-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-ESPOSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg: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%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP4pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP5pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP4pkg:rpm/suse/MozillaThunderbird&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP5
< 102.15.0-1.el8_8.alma+ 30 more
- (no CPE)range: < 102.15.0-1.el8_8.alma
- (no CPE)range: < 102.15.0-1.el9_2.alma
- (no CPE)range: < 102.15.0-1.el8_8.alma
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 117.0-1.1
- (no CPE)range: < 115.2.2-150200.8.130.1
- (no CPE)range: < 115.2.2-150200.8.130.1
- (no CPE)range: < 115.2.0-1.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150000.150.100.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-112.176.1
- (no CPE)range: < 115.2.0-150000.150.100.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-112.176.1
- (no CPE)range: < 115.2.0-150000.150.100.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-150200.152.102.1
- (no CPE)range: < 115.2.0-112.176.1
- (no CPE)range: < 115.2.2-150200.8.130.1
- (no CPE)range: < 115.2.2-150200.8.130.1
- (no CPE)range: < 115.2.2-150200.8.130.1
- (no CPE)range: < 115.2.2-150200.8.130.1
Patches
Vulnerability mechanics
References
6- bugzilla.mozilla.org/show_bug.cgimitre
- www.mozilla.org/security/advisories/mfsa2023-34/mitre
- www.mozilla.org/security/advisories/mfsa2023-35/mitre
- www.mozilla.org/security/advisories/mfsa2023-36/mitre
- www.mozilla.org/security/advisories/mfsa2023-37/mitre
- www.mozilla.org/security/advisories/mfsa2023-38/mitre
News mentions
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