5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.7 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
35.8%
Discourse is an open-source discussion platform. Prior to version 3.0.1 of the stable
branch and version 3.1.0.beta2 of the beta
and tests-passed
branches, a maliciously crafted URL can be included in a user’s full name field to to carry out cross-site scripting attacks on sites with a disabled or overly permissive CSP (Content Security Policy). Discourse’s default CSP prevents this vulnerability. The vulnerability is patched in version 3.0.1 of the stable
branch and version 3.1.0.beta2 of the beta
and tests-passed
branches. As a workaround, enable and/or restore your site’s CSP to the default one provided with Discourse.
github.com/discourse/discourse/commit/1a5a6f66cb821ed29a737311d6fdc2eba5adc915
github.com/discourse/discourse/commit/c186a46910431020e8efc425dec2133e7a99fa9a
github.com/discourse/discourse/pull/20008
github.com/discourse/discourse/pull/20009
github.com/discourse/discourse/security/advisories/GHSA-7pm2-prxw-wrvp
5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.7 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
35.8%