CSRF in Amir1376 Ab-Download-Manager
CVE-2026-121451
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.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/amir1376/ab-download-manager/issues/1489 (issue-tracking)
- github.com/amir1376/ab-download-manager (product)
- github.com/amir1376/ab-download-manager/commit/34cd27af6a9a6c2046af112bc9bd3482… (patch)
- github.com/amir1376/ab-download-manager/blob/v1.11.1/integration/server/src/mai… (technical-description)
- github.com/amir1376/ab-download-manager/blob/v1.11.1/desktop/app/src/main/kotli… (technical-description)
- www.vulncheck.com/advisories/ab-download-manager-before-1.11.2-arbitrary-file-w… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121451?
- CVE-2026-121451 is a high-severity vulnerability in Amir1376 Ab-Download-Manager, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2026-11-03.
- How severe is CVE-2026-121451?
- High severity. CVSS v3 base score is 8.8 out of 10.