{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49455","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-30T02:43:33.107Z","datePublished":"2026-09-03T18:15:42.014Z","dateUpdated":"2026-09-03T18:34:19.918Z"},"containers":{"cna":{"title":"Waku: Cross-Origin CSRF on RSC Server Action Dispatch","problemTypes":[{"descriptions":[{"cweId":"CWE-352","lang":"en","description":"CWE-352: Cross-Site Request Forgery (CSRF)","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/wakujs/waku/security/advisories/GHSA-75w3-gmqx-993q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/wakujs/waku/security/advisories/GHSA-75w3-gmqx-993q"},{"name":"https://github.com/wakujs/waku/releases/tag/v1.0.0-beta.1","tags":["x_refsource_MISC"],"url":"https://github.com/wakujs/waku/releases/tag/v1.0.0-beta.1"}],"affected":[{"vendor":"wakujs","product":"waku","versions":[{"version":"< 1.0.0-beta.1","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-03T18:15:42.014Z"},"descriptions":[{"lang":"en","value":"Waku is the minimal React framework. Prior to version 1.0.0-beta.1, Waku's RSC request dispatcher invokes server actions without validating the request's Origin (or Sec-Fetch-Site) header. A cross-origin web attacker can therefore cause a victim browser to issue an authenticated POST to a registered server action endpoint using a CORS-safelisted content type (text/plain), which does not trigger a preflight. Any state-mutating server action that the application exposes via 'use server' can be invoked with the victim's cookies attached. This issue has been patched in version 1.0.0-beta.1."}],"source":{"advisory":"GHSA-75w3-gmqx-993q","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-03T18:32:58.949158Z","id":"CVE-2026-49455","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":"2026-09-03T18:34:19.918Z"}}]}}