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CVE-2023-45806 Details

Description

Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863	CVE	Patch
https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e	CVE	Patch
https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78	CVE	PatchVendor Advisory
https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863	[email protected]	Patch
https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e	[email protected]	Patch
https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78	[email protected]	PatchVendor Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1333	Inefficient Regular Expression Complexity	[email protected]

Affected Products

Product	Versions
discourse discourse	< 3.1.3 < 3.2.0 3.2.0 beta1 3.2.0 beta2
CPE cpe:2.3:a:discourse:discourse:::::stable:::* cpe:2.3:a:discourse:discourse:::::beta:::* cpe:2.3:a:discourse:discourse:3.2.0:beta1:::beta:::* cpe:2.3:a:discourse:discourse:3.2.0:beta2:::beta:::* Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 17, 2023	Initial Analysis	[email protected]
Nov 10, 2023	CVE Modified	[email protected]
Nov 10, 2023	New CVE Received	[email protected]