CVE-2024-4769

moderate-risk
Published 2024-05-14

When importing resources using Web Workers, error messages would distinguish the difference between `application/javascript` responses and non-script responses. This could have been abused to learn information cross-origin. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.

Do I need to act?

-
0.83% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (4)

Affected Vendors

Debian Mozilla

References (12)

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1886108
Mailing List https://lists.debian.org/debian-lts-announce/2024/05/msg00010.html
Mailing List https://lists.debian.org/debian-lts-announce/2024/05/msg00012.html
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-21/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-22/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-23/
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1886108
Mailing List https://lists.debian.org/debian-lts-announce/2024/05/msg00010.html
Mailing List https://lists.debian.org/debian-lts-announce/2024/05/msg00012.html
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-21/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-22/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2024-23/
31
/ 100
moderate-risk
Severity 18/34 · Moderate
Exploitability 3/34 · Minimal
Exposure 10/34 · Low