{"id":"CVE-2026-73243","state":"PUBLISHED","title":"kkFileView: Unauthenticated SSRF via /addTask with fullfilename type-confusion bypass","description":"kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated GET /addTask endpoint in kkFileView is omitted from TrustHostFilter and TrustDirFilter in server/src/main/java/cn/keking/config/WebConfig.java, allowing FileConvertQueueTask to fetch an attacker-selected URL after FileHandlerService#getFileAttribute uses the fullfilename parameter to force an OFFICE, COMPRESS, or CAD type. This issue is fixed in version 5.0.1.","publishedAt":"2026-08-11T20:04:38.710Z","updatedAt":"2026-08-11T20:14:46.519Z","severity":{"score":5.8,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["kekingcn kkFileView"],"affected":[{"vendor":"kekingcn","product":"kkFileView","versions":[{"version":"< 5.0.1","status":"affected"}]}],"references":["https://github.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m","https://github.com/kekingcn/kkFileView/issues/765","https://github.com/kekingcn/kkFileView/pull/767","https://github.com/kekingcn/kkFileView/commit/32a887aa2cd70228998c617c4e7df6cfcf3fe709","https://github.com/kekingcn/kkFileView/releases/tag/v5.0.1"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/73xxx/CVE-2026-73243.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-73243","state":"PUBLISHED","datePublished":"2026-08-11T20:04:38.710Z","dateUpdated":"2026-08-11T20:14:46.519Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-11T17:18:01.597Z"},"containers":{"cna":{"title":"kkFileView: Unauthenticated SSRF via /addTask with fullfilename type-confusion bypass","descriptions":[{"lang":"en","value":"kkFileView is a universal file online preview project based on Spring Boot. Prior to 5.0.1, the unauthenticated GET /addTask endpoint in kkFileView is omitted from TrustHostFilter and TrustDirFilter in server/src/main/java/cn/keking/config/WebConfig.java, allowing FileConvertQueueTask to fetch an attacker-selected URL after FileHandlerService#getFileAttribute uses the fullfilename parameter to force an OFFICE, COMPRESS, or CAD type. This issue is fixed in version 5.0.1."}],"affected":[{"vendor":"kekingcn","product":"kkFileView","versions":[{"version":"< 5.0.1","status":"affected"}]}],"references":[{"url":"https://github.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m","name":"https://github.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/kekingcn/kkFileView/issues/765","name":"https://github.com/kekingcn/kkFileView/issues/765","tags":["x_refsource_MISC"]},{"url":"https://github.com/kekingcn/kkFileView/pull/767","name":"https://github.com/kekingcn/kkFileView/pull/767","tags":["x_refsource_MISC"]},{"url":"https://github.com/kekingcn/kkFileView/commit/32a887aa2cd70228998c617c4e7df6cfcf3fe709","name":"https://github.com/kekingcn/kkFileView/commit/32a887aa2cd70228998c617c4e7df6cfcf3fe709","tags":["x_refsource_MISC"]},{"url":"https://github.com/kekingcn/kkFileView/releases/tag/v5.0.1","name":"https://github.com/kekingcn/kkFileView/releases/tag/v5.0.1","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","version":"3.1"}}],"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":"2026-08-11T20:04:38.710Z"},"source":{"advisory":"GHSA-gwwj-52hv-6g2m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/kekingcn/kkFileView/security/advisories/GHSA-gwwj-52hv-6g2m","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T20:14:19.920749Z","id":"CVE-2026-73243","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-11T20:14:46.519Z"}}]}}}