Medium severity · published Jun 25, 2025
CVE-2025-48954
Discourse is an open-source discussion platform
6.1
CVSS
0.7%
EPSS
No
On KEV
Description
Discourse is an open-source discussion platform. Versions prior to 3.5.0.beta6 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0.beta6 patches the issue. As a workaround, have the content security policy enabled.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 54% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
Discourse · Discourse
before 3.5.0; 3.5.0; 3.5.0; 3.5.0; 3.5.0; 3.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-48954
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-48954
Vendor Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-26p5-mjjh-wfcf
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