{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-9491","assignerOrgId":"db201096-a0cc-46c7-9a55-61d9e221bf01","state":"PUBLISHED","assignerShortName":"synology","dateReserved":"2026-05-25T02:03:55.583Z","datePublished":"2026-08-28T07:07:57.240Z","dateUpdated":"2026-08-28T11:03:53.629Z"},"containers":{"cna":{"problemTypes":[{"descriptions":[{"lang":"en","description":"Server-Side Request Forgery (SSRF)","cweId":"CWE-918","type":"CWE"}]}],"affected":[{"vendor":"Synology","product":"Synology Chat Server","versions":[{"version":"*","status":"affected","lessThan":"2.4.5-22148","versionType":"semver"}],"defaultStatus":"affected"}],"descriptions":[{"lang":"en","value":"A server-ide request forgery (SSRF) vulnerability in webhook in Synology Chat Server before 2.4.5-22148 allows remote authenticated users to obtain non-sensitive information."}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"baseScore":4.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","version":"3.1"}}],"references":[{"url":"https://www.synology.com/en-global/security/advisory/Synology_SA_26_10","name":"Synology-SA-26:10 Synology Chat Server","tags":["vendor-advisory"]}],"credits":[{"lang":"en","value":"Lam Jun Rong and Javier Koh, Cyber Specialists of the Digital and Intelligence Service (DIS) working with the Centre for Strategic Infocomm Technologies (CSIT) and Dr Joseph Teo, CSIT","type":"finder"}],"providerMetadata":{"orgId":"db201096-a0cc-46c7-9a55-61d9e221bf01","shortName":"synology","dateUpdated":"2026-08-28T07:07:57.240Z"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-28T11:03:41.176635Z","id":"CVE-2026-9491","options":[{"Exploitation":"none"},{"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":"2026-08-28T11:03:53.629Z"}}]}}