{"affected":[{"defaultStatus":"unaffected","product":"ab-download-manager","source":"CNA: VulnCheck","vendor":"amir1376","versions":[{"lessThan":"1.11.2","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-121451","cwes":["CWE-352"],"description":"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.","epss":{"date":"2026-11-09","percentile":0.21745,"score":0.0029},"exploits":[],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":8.8,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},{"score":8.7,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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","version":"4.0"},{"score":8.8,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794236729945,"publishedAt":1793719021146,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/amir1376/ab-download-manager/issues/1489"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/amir1376/ab-download-manager"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd34828fec0bbc"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/amir1376/ab-download-manager/blob/v1.11.1/integration/server/src/main/kotlin/com/abdownloadmanager/integration/Endpoints.kt#L27-L75"},{"source":"CNA: VulnCheck","tags":["technical-description"],"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"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/ab-download-manager-before-1.11.2-arbitrary-file-write-via-start-headless-download-csrf"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/amir1376/ab-download-manager"},{"source":"disclosure@vulncheck.com","tags":[],"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"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/amir1376/ab-download-manager/blob/v1.11.1/integration/server/src/main/kotlin/com/abdownloadmanager/integration/Endpoints.kt#L27-L75"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd34828fec0bbc"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/amir1376/ab-download-manager/issues/1489"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/ab-download-manager-before-1.11.2-arbitrary-file-write-via-start-headless-download-csrf"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd34828fec0bbc"}],"revision":"b42e3dd7ed14105b1548ae0bb3a8ef62258004d3edd2519c0005beb089a1d4b9","sources":[{"modifiedAt":1794236729945,"name":"CNA: VulnCheck","retrievedAt":1794240561528,"url":"https://www.cve.org/CVERecord?id=CVE-2026-121451"},{"modifiedAt":1793723449290,"name":"NVD","retrievedAt":1793730098243,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121451"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794240592340,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-121451"}],"ssvc":{"assessedAt":1794236704086,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"AB Download Manager before 1.11.2 Arbitrary File Write via /start-headless-download CSRF","updatedAt":1794240592340}