{"id":"CVE-2026-73851","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-73851","generatedAt":"2026-10-28T03:39:36.743Z","title":"Prior to 1.29.1 and 1.34.0, an attacker who controls or tampers with the OpenAPI description consumed by Kiota can supply a file reference that resolves outside the manifest package (e.g. ../../../../etc/passwd, an absolute path, or a file:// /…","description":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.34.0, an attacker who controls or tampers with the OpenAPI description consumed by Kiota can supply a file reference that resolves outside the manifest package (e.g. ../../../../etc/passwd, an absolute path, or a file:// / http(s):// URI). When the generated manifest is deployed and consumed by an AI host, this can lead to inclusion or disclosure of files outside the intended package boundary. This vulnerability is fixed in 1.29.1 and 1.34.0.","published":"2026-08-17T15:16:58.000Z","lastModified":"2026-10-24T15:10:00.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":6.1,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-22","CWE-829"],"affected":[],"epss":{"score":0.02275,"percentile":0.83001,"date":"2026-10-27","history":[]},"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 (2.27%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/microsoft/kiota/commit/430008e9d700b3fe80f206c672415cfbd8e830e7","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota/commit/de3d18d9fe31ced4ac749728d3a2f94811f59268","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota/issues/7912","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota/pull/7910","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota/pull/7913","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota/releases/tag/v1.29.1","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota/releases/tag/v1.34.0","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota/security/advisories/GHSA-p5rm-jg5c-8c77","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-73851","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."}