CVE-2023-45806
mediumpriority · track · 32EPSS 0.010 · 63 %ileexploit · PoCEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- yksivaihde/discourse-CVE-2023-45806yksivaihde/discourse-CVE-2023-45806PoC · poc_in_github
affected products (6)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- BIT-discourse-2023-45806Discourse vulnerable to DoS via Regexp Injection in Full Name2024-03-06vendor · osvUS
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.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (10)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2023-45806/cnnvd
- https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863cnnvd
- https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921ecnnvd
- https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78cnnvd
- https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863enisa_euvd
- https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921eenisa_euvd
- https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78enisa_euvd
- https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863Patchnvd
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