cve-2023-30538
Vulnerability from cvelistv5
Published
2023-04-18 21:25
Modified
2025-02-06 16:33
Severity ?
5.4 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Summary
Discourse is an open source platform for community discussion. Due to the improper sanitization of SVG files, an attacker can execute arbitrary JavaScript on the users’ browsers by uploading a crafted SVG file. This issue is patched in the latest stable and tests-passed versions of Discourse. Users are advised to upgrade. For users unable to upgrade there are two possible workarounds: enable CDN handing of uploads (and ensure the CDN sanitizes SVG files) or disable SVG file uploads by ensuring that the `authorized extensions` site setting does not include `svg` (or reset that setting to the default, by default Discourse doesn't enable SVG uploads by users).
References
security-advisories@github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-w5mv-4pjf-xj43Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/discourse/discourse/security/advisories/GHSA-w5mv-4pjf-xj43Mitigation, Third Party Advisory
Impacted products
Vendor Product Version
discourse discourse Version: stable: < 3.0.3
Version: beta: < 3.1.0.beta4
 Create a notification for this product.
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