{"cve":"CVE-2026-113671","nvd":{"published":"2026-10-20T18:17:20.813","modified":"2026-10-20T19:53:10.247","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","score":4.3},"cwes":["CWE-918"],"references":["https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/ai-helper@1.0.0-beta.13","https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-527g-ff96-x6wj","https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-527g-ff96-x6wj"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:56:58.798400159+00:00"},"epss":{"cve":"CVE-2026-113671","score":0.00329,"percentile":0.25799,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-527g-ff96-x6wj","url":"https://osv.dev/vulnerability/GHSA-527g-ff96-x6wj","summary":"ApostropheCMS: Host header controls server-side image fetch origin in @apostrophecms/ai-helper, enabling authenticated SSRF","modified":"2026-10-20T18:30:03.589840564Z","packages":[{"ecosystem":"npm","name":"@apostrophecms/ai-helper","purl":"pkg:npm/%40apostrophecms/ai-helper","ranges":[">=1.0.0-beta.10 <1.0.0-beta.13"],"fixed":["1.0.0-beta.13"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}