CVE-2026-118485

CVE-2026-118485 · Axel Download Accelerator Path Traversal via URL Filename Decoding

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Axel Download Accelerator 2.17.14 and earlier performs URL percent-decoding (http_decode()) on the output filename after the URL has been parsed and the filename component extracted. This allows an attacker to embed %2e%2e%2f (URL-encoded ../) sequences in the URL path. These sequences survive the URL parser intact (they contain no literal / characters) but are decoded into directory traversal sequences before the output file is opened for writing. As a result, a crafted URL can cause axel to write downloaded content to arbitrary filesystem paths relative to the current working directory.

CVSS 7.0 · High · EPSS 0.6%

Published

2026-10-28T11:26:59.053Z

Updated

2026-10-28T11:26:59.053Z

Stack: system

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