{"id":"CVE-2026-5538","state":"PUBLISHED","title":"QingdaoU OnlineJudge judge_server_heartbeat Endpoint JudgeServer.service_url server-side request forgery","description":"A vulnerability was detected in QingdaoU OnlineJudge up to 1.6.1. Affected by this issue is the function service_url of the file JudgeServer.service_url of the component judge_server_heartbeat Endpoint. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way.","publishedAt":"2026-04-05T03:15:15.703Z","updatedAt":"2026-04-06T16:34:01.311Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","source":"VulDB"},"assigner":"VulDB","products":["QingdaoU OnlineJudge"],"affected":[{"vendor":"QingdaoU","product":"OnlineJudge","versions":[{"version":"1.6.0","status":"affected"},{"version":"1.6.1","status":"affected"}],"modules":["judge_server_heartbeat Endpoint"]}],"references":["https://vuldb.com/vuln/355291","https://vuldb.com/vuln/355291/cti","https://vuldb.com/submit/782203","https://github.com/AnalogyC0de/public_exp/issues/27"],"weaknesses":["CWE-918"],"ingestedAt":"2026-10-29T20:12:32.778Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/5xxx/CVE-2026-5538.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-5538","state":"PUBLISHED","datePublished":"2026-04-05T03:15:15.703Z","dateUpdated":"2026-04-06T16:34:01.311Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-04-04T06:44:15.570Z"},"containers":{"cna":{"title":"QingdaoU OnlineJudge judge_server_heartbeat Endpoint JudgeServer.service_url server-side request forgery","descriptions":[{"lang":"en","value":"A vulnerability was detected in QingdaoU OnlineJudge up to 1.6.1. Affected by this issue is the function service_url of the file JudgeServer.service_url of the component judge_server_heartbeat Endpoint. The manipulation results in server-side request forgery. It is possible to launch the attack remotely. The vendor was contacted early about this disclosure but did not respond in any way."}],"affected":[{"vendor":"QingdaoU","product":"OnlineJudge","versions":[{"version":"1.6.0","status":"affected"},{"version":"1.6.1","status":"affected"}],"modules":["judge_server_heartbeat Endpoint"]}],"references":[{"url":"https://vuldb.com/vuln/355291","name":"VDB-355291 | QingdaoU OnlineJudge judge_server_heartbeat Endpoint JudgeServer.service_url server-side request forgery","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/355291/cti","name":"VDB-355291 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/submit/782203","name":"Submit #782203 | QingdaoU  OnlineJudge  <=v1.6.1 Stored SSRF","tags":["third-party-advisory"]},{"url":"https://github.com/AnalogyC0de/public_exp/issues/27","tags":["issue-tracking"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":6.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":6.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":6.5,"vectorString":"AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-918","type":"CWE","lang":"en","description":"Server-Side Request Forgery"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-04-05T03:15:15.703Z"},"timeline":[{"time":"2026-04-04T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-04-04T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-04-04T08:49:20.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Ana10gy (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-06T16:33:27.220465Z","id":"CVE-2026-5538","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-06T16:34:01.311Z"}}]}}}