MEDIUM 6.5 NVD
CVE-2026-49455
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
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.
References
- https://github.com/wakujs/waku/releases/tag/v1.0.0-beta.1
- https://github.com/wakujs/waku/security/advisories/GHSA-75w3-gmqx-993q
This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-09-03 via NVD.
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