CVE-2022-46148

29.11.2022, 17:15

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 Discourses default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.

Cross-site Scripting

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	7.1 HIGH	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
GitHub_M	CNA	7.1 HIGH	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVE	ADP	---				---
CISA-ADP	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 30%

Vendor	Product	Version
discourse	discourse	𝑥 ≤ 2.8.10
discourse	discourse	2.9.0:beta1
discourse	discourse	2.9.0:beta10
discourse	discourse	2.9.0:beta11
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

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/security/advisories/GHSA-c5h6-6gg5-84fh