CVE-2025-3035 Tab title disclosure across pages when using AI chatbot

What is CVE-2025-3035?

CVE-2025-3035 is a medium-severity vulnerability in Mozilla Firefox, published on 1 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

By first using the AI chatbot in one tab and later activating it in another tab, the document title of the previous tab would leak into the chat prompt. This vulnerability was fixed in Firefox 137.

Weakness: CWE-359

Which versions are affected by CVE-2025-3035?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2025-3035?

Upgrade to a fixed version.

Is CVE-2025-3035 being exploited?

There is no known exploitation of CVE-2025-3035 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

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

Also known as GHSA-p549-c3cg-f4qm, UBUNTU-CVE-2025-3035.