Vulnerability in Mozilla Firefox
CVE-2025-3035
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.
EPSS: 0.003 (19.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Mozilla Firefox — versions 137
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@mozilla.org (Permissions Required)
- security@mozilla.org (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-3035?
- CVE-2025-3035 is a medium-severity vulnerability in Mozilla Firefox, classified under Exposure of Private Personal Information to an Unauthorized Actor. CVSS score: 5.3/10. Published 2025-04-01.
- How severe is CVE-2025-3035?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-3035 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.