{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-58270","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-29T21:54:30.332Z","datePublished":"2026-09-21T20:28:53.535Z","dateUpdated":"2026-09-22T14:06:46.587Z"},"containers":{"cna":{"title":"Sync-in Server has a ReDoS via Unsanitized Regex in Sync Diff `pathFilters`","problemTypes":[{"descriptions":[{"cweId":"CWE-1333","lang":"en","description":"CWE-1333: Inefficient Regular Expression Complexity","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/Sync-in/server/security/advisories/GHSA-jx63-h26r-8cph","tags":["x_refsource_CONFIRM"],"url":"https://github.com/Sync-in/server/security/advisories/GHSA-jx63-h26r-8cph"}],"affected":[{"vendor":"Sync-in","product":"server","versions":[{"version":"< 2.4.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-21T20:28:53.535Z"},"descriptions":[{"lang":"en","value":"Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, the sync diff endpoint compiles a user-supplied string into a `RegExp` with no complexity validation. A catastrophic-backtracking pattern (e.g. `^(a+)+b`) blocks the Node.js event loop, making the entire server unresponsive to all users until the container is restarted. Version 2.4.0 patches the issue."}],"source":{"advisory":"GHSA-jx63-h26r-8cph","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/Sync-in/server/security/advisories/GHSA-jx63-h26r-8cph","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T14:06:26.710916Z","id":"CVE-2026-58270","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-22T14:06:46.587Z"}}]}}