Medium severity · published Aug 13, 2021
CVE-2021-37703
Discourse is an open-source platform for community discussion
4.3
CVSS
0.8%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 58% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
Discourse · Discourse
before 2.7.8; 2.8.0; 2.8.0; 2.8.0; 2.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-37703
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-37703
Patch
https://github.com/discourse/discourse/commit/aed65ec16d38886d7be7209d8c02df4ffd4937a4
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-gq2h-qhg2-phf9
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