CVE-2022-30999

Public Exploit
Possible cross-site scripting attack via unsanitized SVG files in FoF Upload

Description

FriendsofFlarum (FoF) Upload is an extension that handles file uploads intelligently for your forum. If FoF Upload prior to version 1.2.3 is configured to allow the uploading of SVG files ('image/svg+xml'), navigating directly to an SVG file URI could execute arbitrary Javascript code decided by an attacker. This Javascript code could include the execution of HTTP web requests to Flarum, or any other web service. This could allow data to be leaked by an authenticated Flarum user, or, possibly, for data to be modified maliciously. This issue has been patched with v1.2.3, which now sanitizes uploaded SVG files. As a workaround, remove the ability for users to upload SVG files through FoF Upload.

Category

8.7
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.15%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: FriendsOfFlarum upload
Published at:
Updated at:

References

Link Tags
https://github.com/FriendsOfFlarum/upload/security/advisories/GHSA-fm53-mpmp-7qw2 third party advisory
https://github.com/FriendsOfFlarum/upload/issues/68 third party advisory issue tracking exploit
https://github.com/FriendsOfFlarum/upload/pull/318 third party advisory patch
https://github.com/FriendsOfFlarum/upload/releases/tag/1.2.3 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-30999?
CVE-2022-30999 has been scored as a high severity vulnerability.
How to fix CVE-2022-30999?
To fix CVE-2022-30999, 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-2022-30999 being actively exploited in the wild?
It is possible that CVE-2022-30999 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.
What software or system is affected by CVE-2022-30999?
CVE-2022-30999 affects FriendsOfFlarum upload.
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.