{"id":"CVE-2026-121451","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-121451","summary":"AB Download Manager before 1.11.2 Arbitrary File Write via /start-headless-download CSRF","details":"AB Download Manager before 1.11.2 contains a cross-site request forgery vulnerability in its unauthenticated browser-integration API that allows remote attackers to write attacker-chosen files to arbitrary paths. A malicious web page can send a text/plain request to /start-headless-download with crafted folder and name values, placing payloads in startup folders for code execution on next login.","published":"2026-11-03T15:17:01.146Z","modified":"2026-11-04T02:47:39.824717519Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd34828fec0bbc","label":"amir1376/ab-download-manager@34cd27a"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121451.json"},{"type":"PACKAGE","url":"https://github.com/amir1376/ab-download-manager"},{"type":"ARTICLE","url":"https://github.com/amir1376/ab-download-manager/blob/v1.11.1/desktop/app/src/main/kotlin/com/abdownloadmanager/desktop/integration/IntegrationHandlerImp.kt#L55-L88"},{"type":"ARTICLE","url":"https://github.com/amir1376/ab-download-manager/blob/v1.11.1/integration/server/src/main/kotlin/com/abdownloadmanager/integration/Endpoints.kt#L27-L75"},{"type":"FIX","url":"https://github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd34828fec0bbc"},{"type":"REPORT","url":"https://github.com/amir1376/ab-download-manager/issues/1489"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121451"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/ab-download-manager-before-1.11.2-arbitrary-file-write-via-start-headless-download-csrf"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-04T02:47:39.824717519Z"}}