CVE-2024-56328 — HTMLi(XSS without CSP) via Onebox urls in Discourse

CVE-2024-56328

HTMLi(XSS without CSP) via Onebox urls in Discourse PUBLISHED

Description (CNA)

Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users' browsers by posting a maliciously crafted onebox url. This issue only affects sites with CSP disabled. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade should enable CSP, disable inline Oneboxes globally, or allow specific domains for Oneboxing.

Affected (CNA)

Vendor / product	Versions
discourse / discourse	affected stable: <= 3.3.3; affected beta: <= 3.4.0.beta3; affected tests-passed: <= 3.4.0.beta3

CWE

CWE-79

References

https://github.com/discourse/discourse/security/advisories/GHSA-j855-mhxj-x6vg

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.