How severe is CVE-2022-21707?

CVE-2022-21707 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2022-21707 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-21707?

CVE-2022-21707 affects Wasmcloud Host Runtime. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-21707?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-21707 published?

CVE-2022-21707 was published on 2022-01-21 and last updated on 2026-06-17.

CVE-2022-21707

CVE-2022-21707 is a medium-severity vulnerability in Wasmcloud Host Runtime with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-862.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 5.5
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Wasmcloud Host Runtime
Published: 2022-01-21
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-21707?: 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.
How severe is CVE-2022-21707?: CVE-2022-21707 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2022-21707 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-21707?: CVE-2022-21707 affects Wasmcloud Host Runtime. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-21707?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-21707 published?: CVE-2022-21707 was published on 2022-01-21 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:wasmcloud:host_runtime:*:*:*:*:*:*:*:*

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