{"id":"CVE-2026-35459","state":"PUBLISHED","title":"pyLoad has SSRF fix bypass via HTTP redirect","description":"pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, pyLoad has a server-side request forgery (SSRF) vulnerability. The fix for CVE-2026-33992 added IP validation to BaseDownloader.download() that checks the hostname of the initial download URL. However, pycurl is configured with FOLLOWLOCATION=1 and MAXREDIRS=10, causing it to automatically follow HTTP redirects. Redirect targets are never validated against the SSRF filter. An authenticated user with ADD permission can bypass the SSRF fix by submitting a URL that redirects to an internal address.","publishedAt":"2026-04-06T19:37:00.598Z","updatedAt":"2026-04-07T19:29:49.223Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["pyload pyload"],"affected":[{"vendor":"pyload","product":"pyload","versions":[{"version":"<= 0.5.0b3.dev96","status":"affected"}]}],"references":["https://github.com/pyload/pyload/security/advisories/GHSA-7gvf-3w72-p2pg","https://github.com/pyload/pyload/commit/33c55da084320430edfd941b60e3da0eb1be9443"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/35xxx/CVE-2026-35459.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-35459","state":"PUBLISHED","datePublished":"2026-04-06T19:37:00.598Z","dateUpdated":"2026-04-07T19:29:49.223Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-02T19:25:52.193Z"},"containers":{"cna":{"title":"pyLoad has SSRF fix bypass via HTTP redirect","descriptions":[{"lang":"en","value":"pyLoad is a free and open-source download manager written in Python. In 0.5.0b3.dev96 and earlier, pyLoad has a server-side request forgery (SSRF) vulnerability. The fix for CVE-2026-33992 added IP validation to BaseDownloader.download() that checks the hostname of the initial download URL. However, pycurl is configured with FOLLOWLOCATION=1 and MAXREDIRS=10, causing it to automatically follow HTTP redirects. Redirect targets are never validated against the SSRF filter. An authenticated user with ADD permission can bypass the SSRF fix by submitting a URL that redirects to an internal address."}],"affected":[{"vendor":"pyload","product":"pyload","versions":[{"version":"<= 0.5.0b3.dev96","status":"affected"}]}],"references":[{"url":"https://github.com/pyload/pyload/security/advisories/GHSA-7gvf-3w72-p2pg","name":"https://github.com/pyload/pyload/security/advisories/GHSA-7gvf-3w72-p2pg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/pyload/pyload/commit/33c55da084320430edfd941b60e3da0eb1be9443","name":"https://github.com/pyload/pyload/commit/33c55da084320430edfd941b60e3da0eb1be9443","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-06T19:37:00.598Z"},"source":{"advisory":"GHSA-7gvf-3w72-p2pg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-04-07T19:26:41.441229Z","id":"CVE-2026-35459","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-07T19:29:49.223Z"}}]}}}