CVE-2023-36473

CSP nonce reuse vulnerability in Discourse

State: Published
Severity: 6.8 Medium
Published: Jul 13, 2023
Updated: Oct 21, 2024
Reserved: Jun 21, 2023

Description

Discourse is an open source discussion platform. A CSP (Content Security Policy) nonce reuse vulnerability could allow XSS attacks to bypass CSP protection. There are no known XSS vectors at the moment, but should one be discovered, this vulnerability would allow the XSS attack to completely bypass CSP. The vulnerability is patched in the latest tests-passed, beta and stable branches.

Scores

CVSS	Score	Vector	Source
3.1	6.8 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
discoursediscourse	stable >= 3.0.5Affected beta >= 3.1.0.beta6Affected tests-passed >= 3.1.0.beta6Affected

References

https://github.com/discourse/discourse/security/advisories/GHSA-9f52-624j-8ppq

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