Discourse is an open source discussion platform. There is a cross-site scripting (XSS) vulnerability in versions 2.7.7 and earlier of the `stable` branch, versions 2.8.0.beta6 and earlier of the `beta` branch, and versions 2.8.0.beta6 and earlier of the `tests-passed` branch. Rendering of some error messages that contain user input can be susceptible to XSS attacks. This vulnerability only affects sites which have blocked watched words that contain HTML tags, modified or disabled Discourse's default Content Security Policy. This issue is patched in the latest `stable`, `beta` and `tests-passed` versions of Discourse. As a workaround, avoid modifying or disabling Discourse’s default Content Security Policy, and blocking watched words containing HTML tags.
References
| Link | Resource |
|---|---|
| https://github.com/discourse/discourse/pull/14434/commits/40b776b9d39c41d9273d01eecf8fe03aa39fcb59 | Patch Third Party Advisory |
| https://github.com/discourse/discourse/security/advisories/GHSA-qvqx-2h7w-m479 | Third Party Advisory |
Configurations
Configuration 1 (hide)
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History
07 Nov 2023, 03:38
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | Discourse is an open source discussion platform. There is a cross-site scripting (XSS) vulnerability in versions 2.7.7 and earlier of the `stable` branch, versions 2.8.0.beta6 and earlier of the `beta` branch, and versions 2.8.0.beta6 and earlier of the `tests-passed` branch. Rendering of some error messages that contain user input can be susceptible to XSS attacks. This vulnerability only affects sites which have blocked watched words that contain HTML tags, modified or disabled Discourse's default Content Security Policy. This issue is patched in the latest `stable`, `beta` and `tests-passed` versions of Discourse. As a workaround, avoid modifying or disabling Discourse’s default Content Security Policy, and blocking watched words containing HTML tags. |
06 Oct 2021, 15:49
| Type | Values Removed | Values Added |
|---|---|---|
| References | (MISC) https://github.com/discourse/discourse/pull/14434/commits/40b776b9d39c41d9273d01eecf8fe03aa39fcb59 - Patch, Third Party Advisory | |
| References | (CONFIRM) https://github.com/discourse/discourse/security/advisories/GHSA-qvqx-2h7w-m479 - Third Party Advisory | |
| CVSS |
v2 : v3 : |
v2 : 4.3
v3 : 6.1 |
| CPE | cpe:2.3:a:discourse:discourse:2.8.0:beta6:*:*:*:*:*:* cpe:2.3:a:discourse:discourse:2.8.0:beta4:*:*:*:*:*:* cpe:2.3:a:discourse:discourse:2.8.0:beta5:*:*:*:*:*:* cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* cpe:2.3:a:discourse:discourse:2.8.0:beta3:*:*:*:*:*:* cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:* cpe:2.3:a:discourse:discourse:2.8.0:beta2:*:*:*:*:*:* |
|
| CWE | CWE-79 |
27 Sep 2021, 20:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-09-27 20:15
Updated : 2023-12-10 14:09
NVD link : CVE-2021-41095
Mitre link : CVE-2021-41095
CVE.ORG link : CVE-2021-41095
JSON object : View
Products Affected
discourse
- discourse
CWE
CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')