CVE-2026-118485 | BDVDB-2026-397321 Detail

Description#

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.

Impact#

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References#

Exploit#

History#

1. Version 12026-10-28Record published in the CVE List.
2. Version 22026-11-06Most recent update recorded in the CVE List.