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).
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History
Thu, 06 Feb 2025 17:15:00 +0000
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-02-06T16:33:27.722Z
Reserved: 2023-04-12T15:19:33.766Z
Link: CVE-2023-30538
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Updated: 2024-08-02T14:28:51.848Z
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Status : Modified
Published: 2023-04-18T22:15:08.130
Modified: 2024-11-21T08:00:22.817
Link: CVE-2023-30538
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