CVE-2023-5722

Description

Using iterative requests an attacker was able to learn the size of an opaque response, as well as the contents of a server-supplied Vary header. This vulnerability affects Firefox < 119.

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.16%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1738426 vendor advisory issue tracking
https://www.mozilla.org/security/advisories/mfsa2023-45/ vendor advisory
https://security.gentoo.org/glsa/202401-10

Frequently Asked Questions

What is the severity of CVE-2023-5722?
CVE-2023-5722 has been scored as a medium severity vulnerability.
How to fix CVE-2023-5722?
To fix CVE-2023-5722, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-5722 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-5722 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-5722?
CVE-2023-5722 affects Mozilla Firefox.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.