CVE-2024-4769 Information disclosure in Firefox

What is CVE-2024-4769?

CVE-2024-4769 is a medium-severity vulnerability in Debian Debian Linux, published on 14 May 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-351

Which versions are affected by CVE-2024-4769?

It affects 3 products.

Products include Debian Debian Linux, Mozilla Firefox, Mozilla Thunderbird.

How do I fix CVE-2024-4769?

Upgrade to a fixed version.

Is CVE-2024-4769 being exploited?

There is no known exploitation of CVE-2024-4769 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2024-4769, GHSA-vgc7-vqc6-2858, UBUNTU-CVE-2024-4769.