CVE-2023-30538
Last modified
CVE-2023-30538 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.36% chance of exploitation in the next 30 days.
Description
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).
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Discourse | Discourse | <= 3.0.2 | — |
| Discourse | Discourse | < 3.1.0 | — |
| Discourse | Discourse | 3.1.0 | Beta1 |
References
- https://github.com/discourse/discourse/security/advisories/GHSA-w5mv-4pjf-xj43Mitigation, Third Party Advisory
- https://github.com/discourse/discourse/security/advisories/GHSA-w5mv-4pjf-xj43Mitigation, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-30538?
How severe is CVE-2023-30538?
How do I fix CVE-2023-30538?
Are you affected by CVE-2023-30538?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST