CVE-2023-29533

Name: CVE-2023-29533
Creator: NVD / NIST
Published: 2023-06-02T17:15:12.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2023-29533 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. A website could have obscured the fullscreen notification by using a combination of <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

A website could have obscured the fullscreen notification by using a combination of <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 112, Focus for Android < 112, Firefox ESR < 102.10, Firefox for Android < 112, and Thunderbird < 102.10.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.56%

42.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 112.0
Mozilla	Firefox Esr	< 102.10
Mozilla	Focus	< 112.0
Mozilla	Thunderbird	< 102.10

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1798219Issue Tracking, Permissions Required, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1814597Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1798219Issue Tracking, Permissions Required, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1814597Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-13/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-14/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2023-15/Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2023-29533?

How severe is CVE-2023-29533?

CVE-2023-29533 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2023-29533?

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-2023-29533?

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

Scan your code now

Source: NVD / NIST