VulnerabilityModified
CVE-2021-43794
In affected versions an attacker can poison the cache for anonymous (i.e. not logged in) users, such that the users are shown a JSON blob instead of the HTML page.
MEDIUM 5.3EPSS 1.02%
Does this matter?
Lower severity and a low EPSS score (1.02%). Track it; it rarely justifies an emergency change on its own.
Description
Discourse is an open source discussion platform. In affected versions an attacker can poison the cache for anonymous (i.e. not logged in) users, such that the users are shown a JSON blob instead of the HTML page. This can lead to a partial denial-of-service. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 1.02% probability · 61th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-610
- Affected
- discourse/discourse
- Source
- security-advisories@github.com
References
- https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1Patch, Third Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hpThird Party Advisory
- https://github.com/discourse/discourse/commit/2da0001965c6d8632d723c46ea5df9f22a1a23f1Patch, Third Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-249g-pc77-65hpThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.