Medium severity · published Feb 4, 2025
CVE-2024-53266
Cross-site Scripting (XSS) via topic titles when CSP disabled in Discourse
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
Discourse is an open source platform for community discussion. In affected versions with some combinations of plugins, and with CSP disabled, activity streams in the user's profile page may be vulnerable to XSS. This has been patched in the latest version of Discourse core. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
discourse · discourse
stable: < 3.3.3; tests-passed: < 3.4.0.beta4 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-53266
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-53266
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-hw4j-4hg7-22h2
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