{"id":"CVE-2026-118485","state":"PUBLISHED","title":"Axel Download Accelerator Path Traversal via URL Filename Decoding","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.","publishedAt":"2026-10-28T11:26:59.053Z","updatedAt":"2026-10-28T11:26:59.053Z","severity":{"score":7,"label":"High","version":"4.0","vector":"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","source":"OCD"},"assigner":"OCD","products":["Axel Download Accelerator Axel"],"affected":[{"vendor":"Axel Download Accelerator","product":"Axel","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.17.14","versionType":"git"}],"repo":"https://github.com/axel-download-accelerator/axel/"}],"references":["https://github.com/axel-download-accelerator/axel/issues/477","https://github.com/axel-download-accelerator/axel/pull/483/changes/4e76e1a1dd1c4ea11b445e2c45e4ee257c76314e","https://github.com/axel-download-accelerator/axel/milestone/22","https://advisories.orangecyberdefense.com/advisories/167"],"weaknesses":["CWE-24"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/118xxx/CVE-2026-118485.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118485","state":"PUBLISHED","datePublished":"2026-10-28T11:26:59.053Z","dateUpdated":"2026-10-28T11:26:59.053Z","assignerShortName":"OCD","assignerOrgId":"6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd","dateReserved":"2026-10-28T11:13:12.954Z"},"containers":{"cna":{"title":"Axel Download Accelerator Path Traversal via URL Filename Decoding","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."}],"affected":[{"vendor":"Axel Download Accelerator","product":"Axel","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.17.14","versionType":"git"}],"repo":"https://github.com/axel-download-accelerator/axel/"}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-24","lang":"en","description":"CWE-24 Path traversal: '../filedir'","type":"CWE"}]}],"providerMetadata":{"shortName":"OCD","orgId":"6064c9f1-42e5-4cc5-a67a-1636d7a9d3fd","dateUpdated":"2026-10-28T11:26:59.053Z"},"datePublic":"2026-10-28T11:25:00.000Z","impacts":[{"capecId":"CAPEC-126","descriptions":[{"lang":"en","value":"CAPEC-126 Path Traversal"}]}],"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"}]}]}],"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"}}}}}