Vulnerability Details : CVE-2021-37703
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.
Vulnerability category: Information leak
Products affected by CVE-2021-37703
- cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*
- cpe:2.3:a:discourse:discourse:2.8.0:beta2:*:*:*:*:*:*
- cpe:2.3:a:discourse:discourse:2.8.0:beta3:*:*:*:*:*:*
- cpe:2.3:a:discourse:discourse:2.8.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:discourse:discourse:2.8.0:beta4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-37703
0.22%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 42 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-37703
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:N/A:N |
8.6
|
2.9
|
NIST | |
|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
2.8
|
1.4
|
NIST | |
|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |
2.8
|
1.4
|
GitHub, Inc. |
CWE ids for CVE-2021-37703
-
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.Assigned by: security-advisories@github.com (Primary)
References for CVE-2021-37703
-
https://github.com/discourse/discourse/security/advisories/GHSA-gq2h-qhg2-phf9
User's read state for a topic is leaked when unread state message is published from the server to the clients. · Advisory · discourse/discourse · GitHubThird Party Advisory
-
https://github.com/discourse/discourse/commit/aed65ec16d38886d7be7209d8c02df4ffd4937a4
SECURITY: User's read state for topic is leaked to unauthorized clients. · discourse/discourse@aed65ec · GitHubPatch;Third Party Advisory
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