CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS
Percentile
22.8%
Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the stable
branch and versions 2.9.0.beta11 and prior on the beta
and tests-passed
branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourseβs default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.
[
{
"vendor": "discourse",
"product": "discourse",
"versions": [
{
"version": "<= 2.8.10",
"status": "affected"
},
{
"version": ">= 2.9.0.beta1, <= 2.9.0.beta11",
"status": "affected"
}
]
}
]