CVE-2021-44855

Public Exploit

Description

An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. There is Blind Stored XSS via a URL to the Upload Image feature.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.25%
Vendor Advisory wikimedia.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://phabricator.wikimedia.org/T293589 issue tracking exploit vendor advisory
https://security.gentoo.org/glsa/202305-24

Frequently Asked Questions

What is the severity of CVE-2021-44855?
CVE-2021-44855 has been scored as a medium severity vulnerability.
How to fix CVE-2021-44855?
To fix CVE-2021-44855, 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-2021-44855 being actively exploited in the wild?
It is possible that CVE-2021-44855 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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.