CVE-2023-4579

Name: CVE-2023-4579
Creator: NVD / NIST
Published: 2023-09-11T09:15:09.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 3.1/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2023-4579 is a low-severity vulnerability rated 3.1/10 on the CVSS scale. Search queries in the default search engine could appear to have been the currently navigated URL if the search query itself was a well formed URL. This could have led to a site spoofing another if it had been maliciously set as the default search engine. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

Search queries in the default search engine could appear to have been the currently navigated URL if the search query itself was a well formed URL. This could have led to a site spoofing another if it had been maliciously set as the default search engine. This vulnerability affects Firefox < 117.

Metrics

CVSS 3.1

3.1/10

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

EPSS Probability

0.38%

30.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 117.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1842766Issue Tracking, Permissions Required
https://security.gentoo.org/glsa/202401-10
https://www.mozilla.org/security/advisories/mfsa2023-34/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1842766Issue Tracking, Permissions Required
https://security.gentoo.org/glsa/202401-10
https://www.mozilla.org/security/advisories/mfsa2023-34/Vendor Advisory

Timeline

Published: Sep 11, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4579?

How severe is CVE-2023-4579?

CVE-2023-4579 has a CVSS score of 3.1/10 (LOW severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4579?

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-2023-4579?

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

Scan your code now

Source: NVD / NIST