CVE-2025-48877
Discourse is an open-source discussion platform. Prior to version 3.4.4 of the stable branch, version 3.5.0.beta5 of the beta branch, and version 3.5.0.beta6-dev of the tests-passed branch, Codepen is present in the default allowed_iframes site setting, and it can potentially auto-run arbitrary JS in the iframe scope, which is unintended. This issue is patched in version 3.4.4 of the stable branch, version 3.5.0.beta5 of the beta branch, and version 3.5.0.beta6-dev of the tests-passed branch. As a workaround, the Codepen prefix can be removed from a site's allowed_iframes.
| Software | From | Fixed in |
|---|---|---|
| discourse / discourse | - | 3.4.4 |
| discourse / discourse | - | 3.5.0 |
| discourse / discourse | 3.5.0-beta1 | 3.5.0-beta1.x |
| discourse / discourse | 3.5.0-beta2 | 3.5.0-beta2.x |
| discourse / discourse | 3.5.0-beta3 | 3.5.0-beta3.x |
| discourse / discourse | 3.5.0-beta4 | 3.5.0-beta4.x |
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