CVE-2023-22455

05.01.2023, 21:15

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, tag descriptions, which can be updated by moderators, can be used for cross-site scripting attacks. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourses default Content Security Policy. Versions 2.8.14 and 3.0.0.beta16 contain a patch.

Cross-site Scripting

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	6.8 MEDIUM	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
GitHub_M	CNA	6.8 MEDIUM	NETWORK	LOW	HIGH	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CVE	ADP	---				---
CISA-ADP	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 22%

Vendor	Product	Version
discourse	discourse	𝑥 < 2.8.14
discourse	discourse	1.1.0:beta1
discourse	discourse	1.1.0:beta2
discourse	discourse	1.1.0:beta3
discourse	discourse	1.1.0:beta4
discourse	discourse	1.1.0:beta5
discourse	discourse	1.1.0:beta6
discourse	discourse	1.1.0:beta6b
discourse	discourse	1.1.0:beta7
discourse	discourse	1.1.0:beta8
discourse	discourse	1.2.0:beta1
discourse	discourse	1.2.0:beta2
discourse	discourse	1.2.0:beta3
discourse	discourse	1.2.0:beta4
discourse	discourse	1.2.0:beta5
discourse	discourse	1.2.0:beta6
discourse	discourse	1.2.0:beta7
discourse	discourse	1.2.0:beta8
discourse	discourse	1.2.0:beta9
discourse	discourse	1.3.0:beta1
discourse	discourse	1.3.0:beta10
discourse	discourse	1.3.0:beta11
discourse	discourse	1.3.0:beta2
discourse	discourse	1.3.0:beta3
discourse	discourse	1.3.0:beta4
discourse	discourse	1.3.0:beta5
discourse	discourse	1.3.0:beta6
discourse	discourse	1.3.0:beta7
discourse	discourse	1.3.0:beta8
discourse	discourse	1.3.0:beta9
discourse	discourse	1.4.0:beta1
discourse	discourse	1.4.0:beta10
discourse	discourse	1.4.0:beta11
discourse	discourse	1.4.0:beta12
discourse	discourse	1.4.0:beta2
discourse	discourse	1.4.0:beta3
discourse	discourse	1.4.0:beta4
discourse	discourse	1.4.0:beta5
discourse	discourse	1.4.0:beta6
discourse	discourse	1.4.0:beta7
discourse	discourse	1.4.0:beta8
discourse	discourse	1.4.0:beta9
discourse	discourse	1.5.0:beta1
discourse	discourse	1.5.0:beta10
discourse	discourse	1.5.0:beta11
discourse	discourse	1.5.0:beta12
discourse	discourse	1.5.0:beta13
discourse	discourse	1.5.0:beta13b
discourse	discourse	1.5.0:beta14
discourse	discourse	1.5.0:beta2
discourse	discourse	1.5.0:beta3
discourse	discourse	1.5.0:beta4
discourse	discourse	1.5.0:beta5
discourse	discourse	1.5.0:beta6
discourse	discourse	1.5.0:beta7
discourse	discourse	1.5.0:beta8
discourse	discourse	1.5.0:beta9
discourse	discourse	1.6.0:beta1
discourse	discourse	1.6.0:beta10
discourse	discourse	1.6.0:beta11
discourse	discourse	1.6.0:beta12
discourse	discourse	1.6.0:beta2
discourse	discourse	1.6.0:beta3
discourse	discourse	1.6.0:beta4
discourse	discourse	1.6.0:beta5
discourse	discourse	1.6.0:beta6
discourse	discourse	1.6.0:beta7
discourse	discourse	1.6.0:beta8
discourse	discourse	1.6.0:beta9
discourse	discourse	1.7.0:beta1
discourse	discourse	1.7.0:beta10
discourse	discourse	1.7.0:beta11
discourse	discourse	1.7.0:beta2
discourse	discourse	1.7.0:beta3
discourse	discourse	1.7.0:beta4
discourse	discourse	1.7.0:beta5
discourse	discourse	1.7.0:beta6
discourse	discourse	1.7.0:beta7
discourse	discourse	1.7.0:beta8
discourse	discourse	1.7.0:beta9
discourse	discourse	1.8.0:beta1
discourse	discourse	1.8.0:beta10
discourse	discourse	1.8.0:beta11
discourse	discourse	1.8.0:beta12
discourse	discourse	1.8.0:beta13
discourse	discourse	1.8.0:beta2
discourse	discourse	1.8.0:beta3
discourse	discourse	1.8.0:beta4
discourse	discourse	1.8.0:beta5
discourse	discourse	1.8.0:beta6
discourse	discourse	1.8.0:beta7
discourse	discourse	1.8.0:beta8
discourse	discourse	1.8.0:beta9
discourse	discourse	1.9.0:beta1
discourse	discourse	1.9.0:beta10
discourse	discourse	1.9.0:beta11
discourse	discourse	1.9.0:beta12
discourse	discourse	1.9.0:beta13
discourse	discourse	1.9.0:beta14
discourse	discourse	1.9.0:beta15
discourse	discourse	1.9.0:beta16
discourse	discourse	1.9.0:beta17
discourse	discourse	1.9.0:beta2
discourse	discourse	1.9.0:beta3
discourse	discourse	1.9.0:beta4
discourse	discourse	1.9.0:beta5
discourse	discourse	1.9.0:beta6
discourse	discourse	1.9.0:beta7
discourse	discourse	1.9.0:beta8
discourse	discourse	1.9.0:beta9
discourse	discourse	2.0.0:beta1
discourse	discourse	2.0.0:beta10
discourse	discourse	2.0.0:beta2
discourse	discourse	2.0.0:beta3
discourse	discourse	2.0.0:beta4
discourse	discourse	2.0.0:beta5
discourse	discourse	2.0.0:beta6
discourse	discourse	2.0.0:beta7
discourse	discourse	2.0.0:beta8
discourse	discourse	2.0.0:beta9
discourse	discourse	2.1.0:beta1
discourse	discourse	2.1.0:beta2
discourse	discourse	2.1.0:beta3
discourse	discourse	2.1.0:beta4
discourse	discourse	2.1.0:beta5
discourse	discourse	2.1.0:beta6
discourse	discourse	2.2.0:beta1
discourse	discourse	2.2.0:beta10
discourse	discourse	2.2.0:beta2
discourse	discourse	2.2.0:beta3
discourse	discourse	2.2.0:beta4
discourse	discourse	2.2.0:beta5
discourse	discourse	2.2.0:beta6
discourse	discourse	2.2.0:beta7
discourse	discourse	2.2.0:beta8
discourse	discourse	2.2.0:beta9
discourse	discourse	2.3.0:beta1
discourse	discourse	2.3.0:beta10
discourse	discourse	2.3.0:beta11
discourse	discourse	2.3.0:beta2
discourse	discourse	2.3.0:beta3
discourse	discourse	2.3.0:beta4
discourse	discourse	2.3.0:beta5
discourse	discourse	2.3.0:beta6
discourse	discourse	2.3.0:beta7
discourse	discourse	2.3.0:beta8
discourse	discourse	2.3.0:beta9
discourse	discourse	2.4.0:beta1
discourse	discourse	2.4.0:beta10
discourse	discourse	2.4.0:beta11
discourse	discourse	2.4.0:beta2
discourse	discourse	2.4.0:beta3
discourse	discourse	2.4.0:beta4
discourse	discourse	2.4.0:beta5
discourse	discourse	2.4.0:beta6
discourse	discourse	2.4.0:beta7
discourse	discourse	2.4.0:beta8
discourse	discourse	2.4.0:beta9
discourse	discourse	2.5.0:beta1
discourse	discourse	2.5.0:beta2
discourse	discourse	2.5.0:beta3
discourse	discourse	2.5.0:beta4
discourse	discourse	2.5.0:beta5
discourse	discourse	2.5.0:beta6
discourse	discourse	2.5.0:beta7
discourse	discourse	2.6.0:beta1
discourse	discourse	2.6.0:beta2
discourse	discourse	2.6.0:beta3
discourse	discourse	2.6.0:beta4
discourse	discourse	2.6.0:beta5
discourse	discourse	2.6.0:beta6
discourse	discourse	2.7.0:beta1
discourse	discourse	2.7.0:beta2
discourse	discourse	2.7.0:beta3
discourse	discourse	2.7.0:beta4
discourse	discourse	2.7.0:beta5
discourse	discourse	2.7.0:beta6
discourse	discourse	2.7.0:beta7
discourse	discourse	2.7.0:beta8
discourse	discourse	2.7.0:beta9
discourse	discourse	2.8.0:beta1
discourse	discourse	2.8.0:beta10
discourse	discourse	2.8.0:beta11
discourse	discourse	2.8.0:beta2
discourse	discourse	2.8.0:beta3
discourse	discourse	2.8.0:beta4
discourse	discourse	2.8.0:beta5
discourse	discourse	2.8.0:beta6
discourse	discourse	2.8.0:beta7
discourse	discourse	2.8.0:beta8
discourse	discourse	2.8.0:beta9
discourse	discourse	2.9.0:beta1
discourse	discourse	2.9.0:beta10
discourse	discourse	2.9.0:beta11
discourse	discourse	2.9.0:beta12
discourse	discourse	2.9.0:beta13
discourse	discourse	2.9.0:beta14
discourse	discourse	2.9.0:beta2
discourse	discourse	2.9.0:beta3
discourse	discourse	2.9.0:beta4
discourse	discourse	2.9.0:beta5
discourse	discourse	2.9.0:beta6
discourse	discourse	2.9.0:beta7
discourse	discourse	2.9.0:beta8
discourse	discourse	2.9.0:beta9
discourse	discourse	3.0.0:beta15

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References

https://github.com/discourse/discourse/commit/692329896ac64d8581947e977202c243eef3b5a2

https://github.com/discourse/discourse/security/advisories/GHSA-5rq6-466r-6mr9

https://github.com/discourse/discourse/commit/692329896ac64d8581947e977202c243eef3b5a2

https://github.com/discourse/discourse/security/advisories/GHSA-5rq6-466r-6mr9