CVE-2022-31739
HIGHFirefox < 101 and Firefox ESR < 91.10 - Path Traversal via Unescaped % Character in Download Path
Title source: llmDescription
When downloading files on Windows, the % character was not escaped, which could have lead to a download incorrectly being saved to attacker-influenced paths that used variables such as %HOMEPATH% or %APPDATA%.<br>*This bug only affects Firefox for Windows. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
References (4)
Core 4
Core References
Issue Tracking, Permissions Required, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1765049
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-20/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-21/
Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-22/
Scores
CVSS v3
8.8
EPSS
0.0048
EPSS Percentile
65.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-73
Status
published
Products (3)
mozilla/firefox
< 101
mozilla/firefox_esr
< 91.10
mozilla/thunderbird
< 91.10
Published
Dec 22, 2022
Tracked Since
Feb 18, 2026