{"id":"CVE-2026-115718","aliases":["EUVD-2026-109780","GHSA-58mj-c563-p78w"],"status":"published","title":"Frappe Builder 1.33.0 before 1.36.0 Missing Authorization via improve_prompt","description":"Frappe Builder versions 1.33.0 before 1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00313,"percentile":0.24567,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-10-26T11:40:00Z","modified":"2026-11-08T14:00:57Z","products":[{"vendor":"frappe","product":"builder"}],"references":[{"url":"https://github.com/frappe/builder/releases/tag/v1.36.0","tags":["patch","release-notes","fix"]},{"url":"https://github.com/frappe/builder/security/advisories/GHSA-58mj-c563-p78w","tags":["vendor-advisory","advisory"]},{"url":"https://www.vulncheck.com/advisories/frappe-builder-before-missing-authorization-via-improve-prompt","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/115xxx/CVE-2026-115718.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115718","tags":["advisory"]},{"url":"https://github.com/frappe/builder","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-115718","title":"Frappe Builder 1.33.0 before 1.36.0 Missing Authorization via improve_prompt","description":"Frappe Builder versions 1.33.0 before 1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.","status":"published","published":"2026-10-26T11:40:00.956Z","modified":"2026-11-08T14:00:57.693Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-08T15:43:32.737211Z"}],"euvd":[{"id":"EUVD-2026-109780","description":"Frappe Builder versions 1.33.0 before 1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.","status":"published","published":"2026-10-26T11:40:00Z","modified":"2026-11-08T14:00:57Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-08T15:13:09.785497Z"}],"nvd":[{"id":"CVE-2026-115718","description":"Frappe Builder versions 1.33.0 before 1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.","status":"published","published":"2026-10-26T12:17:05.387Z","modified":"2026-11-08T14:18:05.33Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-08T16:10:19.618708Z"}],"osv":[{"id":"CVE-2026-115718","title":"Frappe Builder 1.33.0 before 1.36.0 Missing Authorization via improve_prompt","description":"Frappe Builder versions 1.33.0 before 1.36.0 contain a missing authorization vulnerability in the improve_prompt endpoint that allows any authenticated non-Guest session to invoke LLM completions without proper permission checks. Attackers can call the improve_prompt API to leverage the site owner's stored OpenRouter API key via resolve_api_key, consuming paid LLM credits and effectively turning the site into a free LLM proxy.","status":"published","published":"2026-10-26T11:40:00.956Z","modified":"2026-11-10T02:31:03.085626824Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-09T03:16:24.800471Z"}]}}