CVE-2022-29916
MEDIUMCVSS 6.5/10EPSS 0.72%
Last modified
CVE-2022-29916 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. EPSS estimates a 0.72% chance of exploitation in the next 30 days.
Description
Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 100.0 |
| Mozilla | Firefox Esr | < 91.9 |
| Mozilla | Thunderbird | < 91.9 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1760674Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-16/Exploit, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-17/Exploit, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-18/Exploit, Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1760674Exploit, Issue Tracking, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-16/Exploit, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-17/Exploit, Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-18/Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2022-29916?
Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.
How severe is CVE-2022-29916?
CVE-2022-29916 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.
How do I fix CVE-2022-29916?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
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- CVE-2022-29920Rejected reason: This CVE ID has been rejected or withdrawn …
- CVE-2022-29921Rejected reason: This CVE ID has been rejected or withdrawn …
Are you affected by CVE-2022-29916?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST