CVE-2021-37703
mediumpriority · track · 17EPSS 0.008 · 58 %ileEUUSEPSS · scored 2026-10-27
Discourse is an open-source platform for community discussion. In Discourse before versions 2.7.8 and 2.8.0.beta5, a user's read state for a topic such as the last read post number and the notification level is exposed.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- BIT-discourse-2021-37703Information exposure in Discourse2024-03-06vendor · osvUS
Discourse is an open-source platform for community discussion. In Discourse before versions 2.7.8 and 2.8.0.beta5, a user's read state for a topic such as the last read post number and the notification level is exposed.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/discourse/discourse/commit/aed65ec16d38886d7be7209d8c02df4ffd4937a4cnnvd
- https://github.com/discourse/discourse/security/advisories/GHSA-gq2h-qhg2-phf9cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2021-37703cnnvd
- https://github.com/discourse/discourse/commit/aed65ec16d38886d7be7209d8c02df4ffd4937a4enisa_euvd
- https://github.com/discourse/discourse/security/advisories/GHSA-gq2h-qhg2-phf9enisa_euvd
- https://github.com/discourse/discourse/commit/aed65ec16d38886d7be7209d8c02df4ffd4937a4PatchThird Party Advisorynvd
- https://github.com/discourse/discourse/security/advisories/GHSA-gq2h-qhg2-phf9Third Party Advisorynvd
Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.
Free scan