Vulnerability Details : CVE-2022-41938
Flarum is an open source discussion platform. Flarum's page title system allowed for page titles to be converted into HTML DOM nodes when pages were rendered. The change was made after `v1.5` and was not noticed. This allowed an attacker to inject malicious HTML markup using a discussion title input, either by creating a new discussion or renaming one. The XSS attack occurs after a visitor opens the relevant discussion page. All communities running Flarum from `v1.5.0` to `v1.6.1` are impacted. The vulnerability has been fixed and published as flarum/core `v1.6.2`. All communities running Flarum from `v1.5.0` to `v1.6.1` have to upgrade as soon as possible to v1.6.2. There are no known workarounds for this issue.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2022-41938
- cpe:2.3:a:flarum:flarum:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-41938
0.56%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 66 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-41938
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.4
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
2.3
|
2.7
|
NIST | |
|
9.0
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
2.3
|
6.0
|
GitHub, Inc. |
CWE ids for CVE-2022-41938
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: security-advisories@github.com (Primary)
References for CVE-2022-41938
-
https://github.com/flarum/framework/security/advisories/GHSA-7x4w-j98p-854x
XSS vulnerability with discussion titles · Advisory · flarum/framework · GitHubThird Party Advisory
-
https://discuss.flarum.org/d/27558
Critical security update to Flarum core, with new incident write-up (v1.0.2) - Flarum CommunityVendor Advisory
-
https://github.com/flarum/framework/commit/690de9ce0ffe7ac4d45b73e303f44340c3433138
fix: evaluated page title content (#3684) · flarum/framework@690de9c · GitHubPatch;Third Party Advisory
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