Discourse is an open source discussion platform. Prior to 3.2.5 and 3.3.0.beta5, the vulnerability allows an attacker to inject iframes from any domain, bypassing the intended restrictions enforced by the allowed_iframes setting. This vulnerability is fixed in 3.2.5 and 3.3.0.beta5.
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Discourse | Discourse | * | 3.2.5 (excluding) |
| Discourse | Discourse | 3.3.0-beta1 (including) | 3.3.0-beta1 (including) |
| Discourse | Discourse | 3.3.0-beta2 (including) | 3.3.0-beta2 (including) |
| Discourse | Discourse | 3.3.0-beta3 (including) | 3.3.0-beta3 (including) |
| Discourse | Discourse | 3.3.0-beta4 (including) | 3.3.0-beta4 (including) |