{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-118485", "assignerOrgId": "6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd", "state": "PUBLISHED", "assignerShortName": "OCD", "dateReserved": "2026-10-28T11:13:12.954Z", "datePublished": "2026-10-28T11:26:59.053Z", "dateUpdated": "2026-10-28T11:26:59.053Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd", "shortName": "OCD", "dateUpdated": "2026-10-28T11:26:59.053Z"}, "title": "Axel Download Accelerator Path Traversal via URL Filename Decoding", "datePublic": "2026-10-28T11:25:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-24", "description": "CWE-24 Path traversal: '../filedir'", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-126", "descriptions": [{"lang": "en", "value": "CAPEC-126 Path Traversal"}]}], "affected": [{"vendor": "Axel Download Accelerator", "product": "Axel", "repo": "https://github.com/axel-download-accelerator/axel/", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "2.17.14", "versionType": "git"}], "defaultStatus": "unaffected"}], "cpeApplicability": [{"operator": "OR", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:axel_download_accelerator:axel:*:*:*:*:*:*:*:*", "versionStartIncluding": "0", "versionEndIncluding": "2.17.14"}]}]}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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."}]}], "references": [{"url": "https://github.com/axel-download-accelerator/axel/issues/477", "tags": ["issue-tracking"]}, {"url": "https://github.com/axel-download-accelerator/axel/pull/483/changes/4e76e1a1dd1c4ea11b445e2c45e4ee257c76314e", "tags": ["patch"]}, {"url": "https://github.com/axel-download-accelerator/axel/milestone/22", "tags": ["vendor-advisory"]}, {"url": "https://advisories.orangecyberdefense.com/advisories/167", "tags": ["third-party-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 8.1, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H"}}], "solutions": [{"lang": "en", "value": "Apply patch provided by Axel. Will be fixed in 2.17.16 as well", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Apply patch provided by Axel. Will be fixed in 2.17.16 as well"}]}], "timeline": [{"time": "2026-02-27T23:00:00.000Z", "lang": "en", "value": "Vulnerability found"}, {"time": "2026-03-03T16:01:00.000Z", "lang": "en", "value": "Vulnerability disclosed to Axel"}, {"time": "2026-07-22T06:52:00.000Z", "lang": "en", "value": "Patch released"}, {"time": "2026-10-28T11:25:00.000Z", "lang": "en", "value": "Vulnerability disclosed"}], "credits": [{"lang": "en", "value": "Guillaume Meunier from Orange Cyberdefense CERT VOC Team", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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