CVE-2020-26951

Name
CVE-2020-26951
Description
A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2020-50/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2020-51/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2020-52/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1667113

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* firefox >= None < 83.0
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* firefox_esr >= None < 78.5
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* thunderbird >= None < 78.5

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
thunderbird edge-community 78.5.1-r0 None fixed
thunderbird edge-community 68.10.0-r0 None possibly vulnerable
thunderbird edge-community 68.9.0-r0 None possibly vulnerable
thunderbird edge-community 68.8.0-r0 None possibly vulnerable
thunderbird edge-community 68.7.0-r0 None possibly vulnerable
thunderbird edge-community 68.6.0-r0 None possibly vulnerable
thunderbird edge-community 68.5.0-r0 None possibly vulnerable
thunderbird 3.22-community 78.5.1-r0 None fixed
thunderbird 3.22-community 68.10.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.9.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.8.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.7.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.6.0-r0 None possibly vulnerable
thunderbird 3.22-community 68.5.0-r0 None possibly vulnerable
thunderbird 3.21-community 78.5.1-r0 None fixed
thunderbird 3.20-community 78.5.1-r0 None fixed
thunderbird 3.19-community 78.5.1-r0 None fixed
thunderbird 3.18-community 78.5.1-r0 None fixed
thunderbird 3.17-community 78.5.1-r0 None fixed
firefox-esr edge-community 78.5.0-r0 None fixed
firefox-esr 3.22-community 78.5.0-r0 None fixed
firefox-esr 3.21-community 78.5.0-r0 None fixed
firefox-esr 3.20-community 78.5.0-r0 None fixed
firefox-esr 3.19-community 78.5.0-r0 None fixed
firefox-esr 3.18-community 78.5.0-r0 None fixed
firefox-esr 3.17-community 78.5.0-r0 None fixed
firefox edge-community 82.0.3-r0 None fixed
firefox edge-community 82.0-r0 None fixed
firefox edge-community 81.0-r0 None fixed
firefox edge-community 80.0-r0 None fixed
firefox edge-community 79.0-r0 None fixed
firefox edge-community 78.0-r0 None possibly vulnerable
firefox edge-community 77.0-r0 None possibly vulnerable
firefox edge-community 76.0-r0 None possibly vulnerable
firefox edge-community 75.0-r0 None possibly vulnerable
firefox edge-community 74.0.1-r0 None possibly vulnerable
firefox edge-community 74.0-r0 None possibly vulnerable
firefox edge-community 71.0.1-r0 None possibly vulnerable
firefox edge-community 70.0-r0 None possibly vulnerable
firefox edge-community 68.0.2-r0 None possibly vulnerable
firefox 3.22-community 82.0.3-r0 None fixed
firefox 3.22-community 82.0-r0 None fixed
firefox 3.22-community 81.0-r0 None fixed
firefox 3.22-community 80.0-r0 None fixed
firefox 3.22-community 79.0-r0 None fixed
firefox 3.22-community 78.0-r0 None possibly vulnerable
firefox 3.22-community 77.0-r0 None possibly vulnerable
firefox 3.22-community 76.0-r0 None possibly vulnerable
firefox 3.22-community 75.0-r0 None possibly vulnerable
firefox 3.22-community 74.0.1-r0 None possibly vulnerable
firefox 3.22-community 74.0-r0 None possibly vulnerable
firefox 3.22-community 71.0.1-r0 None possibly vulnerable
firefox 3.22-community 70.0-r0 None possibly vulnerable
firefox 3.22-community 68.0.2-r0 None possibly vulnerable