CVEvulnerability

CVE-2026-49455

6.5 MEDIUM Published 2026-09-03 Modified 2026-09-09 Official page ↗
Status
Deferred
Published
2026-09-03
Last modified
2026-09-09
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Weaknesses
CWE-352

Description

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.

Related

Weakness · CWE (1)

  • CWE-352 Cross-Site Request Forgery weakness

References