GHSA-9225-76qg-xfwxMediumCVSS 6.1
Discourse 1.9.0.beta2 before 1.9.0.beta13 contains a reflected cross-site scripting vulnerability...
🔗 CVE IDs covered (1)
📋 Description
Discourse 1.9.0.beta2 before 1.9.0.beta13 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the email parameter of /email/unsubscribed. Attackers can craft GET requests with SVG onload payloads, which unsubscribed.html.erb renders unescaped via html_safe, executing JavaScript in victims' browsers. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-19.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2017-20290
- https://github.com/discourse/discourse/commit/6e37f09b19
- https://github.com/discourse/discourse/commit/a6f2533d38
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/discourse-xss.yaml
- https://www.vulncheck.com/advisories/discourse-1.9.0-beta13-reflected-xss-via-email-unsubscribed
- https://github.com/advisories/GHSA-9225-76qg-xfwx