CVE-2022-21707: Incorrect Authorization in wasmCloud

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-01-21 · updated 2026-06-17
Weakness: CWE-863

Description

wasmCloud Host Runtime is a server process that securely hosts and provides dispatch for web assembly (WASM) actors and capability providers. In versions prior to 0.52.2 actors can bypass capability authorization. Actors are normally required to declare their capabilities for inbound invocations, but with this vulnerability actor capability claims are not verified upon receiving invocations. This compromises the security model for actors as they can receive unauthorized invocations from linked capability providers. The problem has been patched in versions `0.52.2` and greater. There is no workaround and users are advised to upgrade to an unaffected version as soon as possible.

Affected products

wasmCloud Host Runtime: before 0.52.2 — fixed in 0.52.2

How to fix

Upgrade to a fixed version: wasmCloud Host Runtime 0.52.2. Check the vendor advisory for mitigations.

References

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