CVE-2022-34479: mozilla firefox
Vulnerability summary
CVE-2022-34479 is a medium (CVSS 6.5) vulnerability in mozilla firefox. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 54% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 30 · Related 13Timeline
- 22-12-2022PublishedVulnerability first disclosed.
- 15-04-2025Last modifiedVulnerability information updated.
Description
A malicious website that could create a popup could have resized the popup to overlay the address bar with its own content, resulting in potential user confusion or spoofing attacks. <br>*This bug only affects Thunderbird for Linux. Other operating systems are unaffected.*. This vulnerability affects Firefox < 102, Firefox ESR < 91.11, Thunderbird < 102, and Thunderbird < 91.11.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS trend
Probability
0.74%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
0.00 pp
From 0.74% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Mozilla3 products
- firefox≥ unspecified, < 102 | < 102.0
- firefox_esr≥ unspecified, < 91.11 | < 91.11
- thunderbird≥ unspecified, < 102 | ≥ unspecified, < 91.11 | < 91.11
Debian2 products
- firefox-esr< 91.11.0esr-1
- thunderbird< 1:91.11.0-1
Ubuntu2 products
- firefox< 102.0+build2-0ubuntu0.18.04.1 | < 102.0+build2-0ubuntu0.20.04.1
- thunderbird< 1:91.11.0+build2-0ubuntu0.18.04.1 | < 1:91.11.0+build2-0ubuntu0.20.04.1 | < 1:91.11.0+build2-0ubuntu0.22.04.1
3 vendors · 7 products
References
10 links- www.mozilla.org/security/advisories/mfsa2022-24/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-26/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-25/Vendor Advisory
