{"id":"CVE-2026-113671","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-113671","generatedAt":"2026-10-28T00:59:52.824Z","title":"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…","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.","published":"2026-10-20T18:17:21.000Z","lastModified":"2026-10-20T19:53:10.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-918"],"affected":[],"epss":{"score":0.00329,"percentile":0.25799,"date":"2026-10-26","history":[{"date":"2026-10-21","score":0.00329,"percentile":0.24692}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-20T18:17:21.000Z","detail":{"score":"4.3","severity":"MEDIUM","publishedAt":"2026-10-20T18:17:20.813Z"},"summary":"New CVE, medium severity (CVSS 4.3)."}],"references":[{"url":"https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/ai-helper@1.0.0-beta.13","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-527g-ff96-x6wj","source":"security-advisories@github.com"},{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-527g-ff96-x6wj","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-113671","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}