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CVE-2025-1935

Date: March 4, 2025

A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability affects Firefox < 136, Firefox ESR < 128.8, Thunderbird < 136, and Thunderbird < 128.8.

Severity Score

Related Resources (7)

https://www.mozilla.org/security/advisories/mfsa2025-18/
https://nvd.nist.gov/vuln/detail/CVE-2025-1935
https://www.mozilla.org/security/advisories/mfsa2025-14/
https://www.mozilla.org/security/advisories/mfsa2025-17/
https://www.mozilla.org/security/advisories/mfsa2025-16/
https://bugzilla.mozilla.org/show_bug.cgi?id=1866661
https://www.mend.io/vulnerability-database/CVE-2025-1935

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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