VulnerabilityModified
CVE-2023-43659
Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI.
MEDIUM 5.4EPSS 0.42%
Does this matter?
Lower severity and a low EPSS score (0.42%). Track it; it rarely justifies an emergency change on its own.
Description
Discourse is an open source platform for community discussion. Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI. This issue only affects sites with CSP disabled. This issue has been patched in the 3.1.1 stable release as well as the 3.2.0.beta1 release. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.42% probability · 35th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- discourse/discourse
- Source
- security-advisories@github.com
References
- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSPThird Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8phVendor Advisory
- https://developer.mozilla.org/en-US/docs/Web/HTTP/CSPThird Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8phVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.