{"id":"CVE-2026-91750","summary":"WeKnora before 0.7.0 SSRF via Unvalidated HTTP Redirects","details":"WeKnora before 0.7.0 fails to re-validate HTTP redirect targets in the POST /api/v1/knowledge-bases/:id/knowledge/url endpoint when downloading documents from user-supplied URLs. Authenticated attackers can bypass initial SSRF validation by supplying a public URL that redirects to internal network addresses, allowing access to internal services and cloud metadata.","modified":"2026-09-18T03:30:51.460254940Z","published":"2026-09-15T00:35:42.122Z","database_specific":{"cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91750.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91750.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91750"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/weknora-before-0.7.0-ssrf-via-unvalidated-http-redirects"},{"type":"REPORT","url":"https://github.com/Tencent/WeKnora/issues/2511"},{"type":"FIX","url":"https://github.com/Tencent/WeKnora/commit/1d322c525a6197d24f07555b4b18ad33313b4328"},{"type":"PACKAGE","url":"https://github.com/Tencent/WeKnora"},{"type":"ARTICLE","url":"https://github.com/Tencent/WeKnora/blob/v0.6.2/internal/application/service/knowledge_util.go#L339-L348"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tencent/weknora","events":[{"introduced":"80bd2688623dda4b0e8df90ec911b97a8cee0a3a"},{"fixed":"e8dcbb07d09db88894601b564ebabe21dda6830d"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0.5.2"},{"fixed":"0.7.0"}]}}],"versions":["v0.6.3","v0.6.2","v0.6.1","v0.6.0","v0.5.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91750.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}