CVE-2022-34474

Name: CVE-2022-34474
Creator: NVD / NIST
Published: 2022-12-22T20:15:32.117+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.41%

Last modified Jun 17, 2026

CVE-2022-34474 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Even when an iframe was sandboxed with <code>allow-top-navigation-by-user-activation</code>, if it received a redirect header to an external protocol the browser would process the redirect and prompt the user as appropriate. This vulnerability affects Firefox < 102.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.

Description

Even when an iframe was sandboxed with <code>allow-top-navigation-by-user-activation</code>, if it received a redirect header to an external protocol the browser would process the redirect and prompt the user as appropriate. This vulnerability affects Firefox < 102.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.41%

32.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 102.0

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1677138Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-24/Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1677138Issue Tracking, Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2022-24/Vendor Advisory

Timeline

Published: Dec 22, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-34474?

How severe is CVE-2022-34474?

CVE-2022-34474 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.

How do I fix CVE-2022-34474?

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-2022-34474?

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

Scan your code now

Source: NVD / NIST