Vulnerability library
Security checkOctober 29, 2026

Cedar: JSON template is in scope missing slot-id validation allows link panic and decision divergence

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Description

Cedar users must be using all of the following features to be affected by this advisory: JSON format policies, policy templates, and the is in scope condition. This advisory only affects JSON-formatted Cedar policy templates containing is in scope conditions that are malformed according to the Cedar syntax.

Recommendation

Update the @cedar-policy/cedar-wasm package to the latest compatible version. Followings are version details:

  • Affected version(s): **>= 3.2.0, < 3.4.3 >= 4.0.1, < 4.11.1**
  • Patched version(s): **3.4.3 4.11.1**

References

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Related Issues

See something that needs correcting? Let us knowUpdated October 29, 2026