CVE-2025-3859

Description

Websites directing users to long URLs that caused eliding to occur in the location view could leverage the truncating behavior to potentially trick users into thinking they were on a different webpage This vulnerability affects Focus < 138.

Categories

6.1
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory mozilla.org
Affected: Mozilla Focus
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1951533 issue tracking
https://www.mozilla.org/security/advisories/mfsa2025-33/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-3859?
CVE-2025-3859 has been scored as a medium severity vulnerability.
How to fix CVE-2025-3859?
To fix CVE-2025-3859, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3859 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-3859 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3859?
CVE-2025-3859 affects Mozilla Focus.
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