{"id":"CVE-2026-72689","state":"PUBLISHED","title":"OpenSignLabs opensignserver - Broken Object Level Authorization","description":"A broken object-level authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read complete contract records via the getDocument Parse cloud function. The function fetches documents using useMasterKey, bypassing the object ACL, and returns full records including sender and signer PII and a pre-signed document download URL whenever the document's IsEnableOTP flag is unset, which is the default configuration.","publishedAt":"2026-08-10T11:59:05.984Z","updatedAt":"2026-08-10T18:22:23.869Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"TuranSec"},"assigner":"TuranSec","products":["OpenSignLabs opensignserver"],"affected":[{"vendor":"OpenSignLabs","product":"opensignserver","defaultStatus":"affected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.37.0","versionType":"semver"}]}],"references":["https://github.com/OpenSignLabs/OpenSign"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72689.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72689","state":"PUBLISHED","datePublished":"2026-08-10T11:59:05.984Z","dateUpdated":"2026-08-10T18:22:23.869Z","assignerShortName":"TuranSec","assignerOrgId":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c","dateReserved":"2026-08-10T11:55:39.471Z"},"containers":{"cna":{"title":"OpenSignLabs opensignserver - Broken Object Level Authorization","descriptions":[{"lang":"en","value":"A broken object-level authorization vulnerability in OpenSignLabs opensignserver through 2.37.0 allows an unauthenticated remote attacker to read complete contract records via the getDocument Parse cloud function. The function fetches documents using useMasterKey, bypassing the object ACL, and returns full records including sender and signer PII and a pre-signed document download URL whenever the document's IsEnableOTP flag is unset, which is the default configuration."}],"affected":[{"vendor":"OpenSignLabs","product":"opensignserver","defaultStatus":"affected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.37.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/OpenSignLabs/OpenSign","name":"OpenSign GitHub Repository","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","type":"CWE","description":"CWE-639: Authorization Bypass Through User-Controlled Key"}]}],"providerMetadata":{"shortName":"TuranSec","orgId":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c","dateUpdated":"2026-08-10T11:59:05.984Z"},"credits":[{"lang":"en","value":"Bobur Abdugafforov (Mahadsec)","type":"finder"}],"source":{"discovery":"EXTERNAL"},"datePublic":"2026-08-10T12:00:00.000Z"},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-10T15:48:17.696804Z","id":"CVE-2026-72689","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-10T18:22:23.869Z"}}]}}}