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CVE

CVE-2023-43659

Cross-site Scripting via email preview when CSP disabled in Discourse
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CVE

CVE-2023-43659

Cross-site Scripting via email preview when CSP disabled in Discourse

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/43xxx/CVE-2023-43659.json, https://github.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8ph, https://nvd.nist.gov/vuln/detail/CVE-2023-43659

Severity

8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8
EPSS Probability
0.00628%
EPSS Percentile
0.70415%
Introduced Version
0
Fix Available

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