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CVE-2026-113671 ApostropheCMS is an open-source Node.js content management system

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.

Affected products and versions

Product Affected versions Fixed in
apostrophe 4.25 4.25.0 → < 4.33.0 4.33.0
ai-helper 1.0 1.0.0-beta.10 → < 1.0.0-beta.13 1.0.0-beta.13

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