5.4

CVE-2023-30538

Stored Cross-site Scripting via improper sanitization of svg files in Discourse

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).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Discourse ≫ Discourse SwEditionstable Version <= 3.0.2
Discourse ≫ Discourse SwEditionbeta Version < 3.1.0
Discourse ≫ Discourse Version3.1.0 Updatebeta1 SwEditionbeta
Discourse ≫ Discourse Version3.1.0 Updatebeta2 SwEditionbeta
Discourse ≫ Discourse Version3.1.0 Updatebeta3 SwEditionbeta
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.28
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.4 2.3 2.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
security-advisories@github.com 5.4 2.8 2.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

https://github.com/discourse/discourse/security/advisories/GHSA-w5mv-4pjf-xj43
Third Party Advisory
Mitigation