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.
Metrics
Affected Vendors & Products
References
History
Wed, 28 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Axel Download Accelerator Path Traversal via URL Filename Decoding | |
| First Time appeared |
Axel Download Accelerator
Axel Download Accelerator axel |
|
| Weaknesses | CWE-24 | |
| CPEs | cpe:2.3:a:axel_download_accelerator:axel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Axel Download Accelerator
Axel Download Accelerator axel |
|
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: OCD
Published: 2026-10-28T11:26:59.053Z
Updated: 2026-10-28T11:26:59.053Z
Reserved: 2026-10-28T11:13:12.954Z
Link: CVE-2026-118485
No data.
Status : Deferred
Published: 2026-10-28T12:17:40.370
Modified: 2026-10-28T15:24:56.033
Link: CVE-2026-118485
No data.
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