CVE-2022-22761: mozilla firefox Protection Mechanism Failure
CVSS: 8.8v3.1HighModified
AliasesUBUNTU-CVE-2022-22761DEBIAN-CVE-2022-22761
Published 22-12-2022Last modified 16-04-2025
Vulnerability summary
CVE-2022-22761 is a high (CVSS 8.8) Protection Mechanism Failure vulnerability in mozilla firefox. EPSS estimates a 0.76% chance of exploitation in the next 30 days, higher than 54.4% of scored vulnerabilities.
CVSS score
8.8/10
010
High · v3.1 (CVE.org)EPSS score
0.76%
0%100%
Low · +0.01 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 27 · Related 11DLA-2916-1DLA-2921-1DSA-5069-1DSA-5074-1MGASA-2022-0057MGASA-2022-0061OPENSUSE-SU-2022:0559-1OPENSUSE-SU-2024:11837-1OPENSUSE-SU-2024:11842-1OPENSUSE-SU-2024:14572-1RHSA-2022:0510RHSA-2022:0511RHSA-2022:0512RHSA-2022:0513RHSA-2022:0514RHSA-2022:0535RHSA-2022:0536RHSA-2022:0537RHSA-2022:0538RHSA-2022:0539SUSE-SU-2022:0559-1SUSE-SU-2022:0565-1SUSE-SU-2022:0676-1SUSE-SU-2022:0696-1SUSE-SU-2022:14896-1USN-5284-1USN-5345-1
Timeline
- 22-12-2022PublishedVulnerability first disclosed.
- 16-04-2025Last modifiedVulnerability information updated.
Description
Web-accessible extension pages (pages with a moz-extension:// scheme) were not correctly enforcing the frame-ancestors directive when it was used in the Web Extension's Content Security Policy. This vulnerability affects Firefox < 97, Thunderbird < 91.6, and Firefox ESR < 91.6.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 8.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.76%
Chance of exploitation in the next 30 days
Percentile
54%
Versus all other CVEs
30-day change
+0.01 pp
From 0.74% on 20-09-2026
20-09-202620-10-2026
EPSS score0.76%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu6 products
- firefox< 97.0+build2-0ubuntu0.18.04.1 | < 97.0+build2-0ubuntu0.20.04.1 | < 97.0+build2-0ubuntu1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- mozjs68All versions (No fix recorded)
- mozjs78All versions (No fix recorded)
Mozilla3 products
- firefox≥ unspecified, < 97 | < 97.0
- firefox_esr≥ unspecified, < 91.6 | < 91.6
- thunderbird≥ unspecified, < 91.6 | < 91.6
Debian2 products
- firefox-esr< 91.6.0esr-1
- thunderbird< 1:91.6.0-1
3 vendors · 11 products
References
11 links- www.mozilla.org/security/advisories/mfsa2022-05/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-04/Vendor Advisory
- www.mozilla.org/security/advisories/mfsa2022-06/Vendor Advisory
