CVE-2023-25731

Name: CVE-2023-25731
Creator: NVD / NIST
Published: 2023-06-02T17:15:11.147+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2023-25731 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters could potentially be used to overwrite global objects in privileged code. This vulnerability affects Firefox < 110.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters could potentially be used to overwrite global objects in privileged code. This vulnerability affects Firefox < 110.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.56%

42.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1284

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 110.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1801542Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1801542Issue Tracking, Permissions Required
https://www.mozilla.org/security/advisories/mfsa2023-05/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1801542Issue Tracking, Permissions Required

Timeline

Published: Jun 2, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-25731?

How severe is CVE-2023-25731?

CVE-2023-25731 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2023-25731?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-25731?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST