Description

ApostropheCMS is an open-source Node.js content management system. From 1.0.0-beta.10 until 1.0.0-beta.13 of the AI helper, an editor with image-generation capability can create a base64-generated image record without a stored provider URL and invoke image acceptance on a deployment using local relative storage with no trusted global base URL. The server resolves the fixed uploads path against a request-controlled Host-derived origin, enabling bounded server-side requests to an attacker-selected host, port, and HTTP origin, but not arbitrary-path retrieval or the stored-provider and absolute-storage configurations. This issue is fixed in AI helper 1.0.0-beta.13.

Quick Facts

References

• https://github.com/apostrophecms/apostrophe/commit/9500b8b0e…
• https://github.com/apostrophecms/apostrophe/commit/f84fd41cb…
• https://github.com/apostrophecms/apostrophe/releases/tag/@ap…
• https://github.com/apostrophecms/apostrophe/security/advisor…
• https://github.com/apostrophecms/apostrophe/security/advisor…

External Resources