CVE-2024-5691

Name: CVE-2024-5691
Creator: NVD / NIST
Published: 2024-06-11T13:15:50.69+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.7/10EPSS 0.65%

Last modified Jun 17, 2026

CVE-2024-5691 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. By tricking the browser with a `X-Frame-Options` header, a sandboxed iframe could have presented a button that, if clicked by a user, would bypass restrictions to open a new window. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

By tricking the browser with a `X-Frame-Options` header, a sandboxed iframe could have presented a button that, if clicked by a user, would bypass restrictions to open a new window. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

Metrics

CVSS 3.1

4.7/10

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

EPSS Probability

0.65%

46.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-693

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 127.0
Mozilla	Firefox Esr	< 115.12
Mozilla	Thunderbird	< 115.12

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1888695Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2024/06/msg00000.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/06/msg00010.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-25/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-26/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-28/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1888695Issue Tracking, Permissions Required
https://lists.debian.org/debian-lts-announce/2024/06/msg00000.htmlMailing List
https://lists.debian.org/debian-lts-announce/2024/06/msg00010.htmlMailing List
https://www.mozilla.org/security/advisories/mfsa2024-25/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-26/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2024-28/Vendor Advisory

Timeline

Published: Jun 11, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-5691?

How severe is CVE-2024-5691?

CVE-2024-5691 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2024-5691?

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-2024-5691?

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

Scan your code now

Source: NVD / NIST