{"id":"CVE-2026-72544","state":"PUBLISHED","title":"OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity","description":"An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to forge document audit-trail entries via the triggerevent Parse cloud function. The function accepts viewer identity and IP address as caller-supplied parameters without authentication, allowing fabrication of arbitrary audit log entries. An attacker can tamper with the legal audit trail of any signed document, undermining non-repudiation.","publishedAt":"2026-08-11T11:09:00.608Z","updatedAt":"2026-08-11T12:24:54.943Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","source":"TuranSec"},"assigner":"TuranSec","products":["OpenSignLabs OpenSign"],"affected":[{"vendor":"OpenSignLabs","product":"OpenSign","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.37.0","versionType":"custom"}]}],"references":["https://github.com/OpenSignLabs/OpenSign"],"weaknesses":["CWE-345"],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72544.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72544","state":"PUBLISHED","datePublished":"2026-08-11T11:09:00.608Z","dateUpdated":"2026-08-11T12:24:54.943Z","assignerShortName":"TuranSec","assignerOrgId":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c","dateReserved":"2026-08-10T10:32:49.081Z"},"containers":{"cna":{"title":"OpenSignLabs OpenSign - Insufficient Verification of Data Authenticity","descriptions":[{"lang":"en","value":"An integrity verification vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to forge document audit-trail entries via the triggerevent Parse cloud function. The function accepts viewer identity and IP address as caller-supplied parameters without authentication, allowing fabrication of arbitrary audit log entries. An attacker can tamper with the legal audit trail of any signed document, undermining non-repudiation."}],"affected":[{"vendor":"OpenSignLabs","product":"OpenSign","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.37.0","versionType":"custom"}]}],"references":[{"url":"https://github.com/OpenSignLabs/OpenSign","name":"Project Repository"}],"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:N/I:H/A:N","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-345","lang":"en","type":"CWE","description":"CWE-345: Insufficient Verification of Data Authenticity"}]}],"providerMetadata":{"shortName":"TuranSec","orgId":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c","dateUpdated":"2026-08-11T11:09:00.608Z"},"credits":[{"lang":"en","value":"Bobur Abdugafforov (Mahadsec)","type":"finder"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-11T12:24:35.047280Z","id":"CVE-2026-72544","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":"2026-08-11T12:24:54.943Z"}}]}}}