High severity8.8NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026
CVE-2026-121451
CVE-2026-121451
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <1.11.2
- Range: <1.11.2
Patches
Vulnerability mechanics
References
5- github.com/amir1376/ab-download-manager/blob/v1.11.1/desktop/app/src/main/kotlin/com/abdownloadmanager/desktop/integration/IntegrationHandlerImp.ktnvd
- github.com/amir1376/ab-download-manager/blob/v1.11.1/integration/server/src/main/kotlin/com/abdownloadmanager/integration/Endpoints.ktnvd
- github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd34828fec0bbcnvd
- github.com/amir1376/ab-download-manager/issues/1489nvd
- www.vulncheck.com/advisories/ab-download-manager-before-1.11.2-arbitrary-file-write-via-start-headless-download-csrfnvd
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