CVE-2026-105163 crossplane CVE debrief

Who should care

Defenders responsible for crossplane-runtime components should assess exposure and prioritize upgrading affected versions to prevent potential remote attacks. This includes operators, platform administrators, vulnerability management teams, and security teams who need to verify affected scope, review vendor guidance, and implement necessary mitigations.

Why it matters

CVE-2026-105163 is a time-of-check time-of-use vulnerability in crossplane crossplane-runtime up to 2.2.2/2.3.2, allowing for remote attacks. Defenders should prioritize upgrading affected components to prevent potential attacks.

• Remote attackers may exploit this vulnerability to launch attacks on vulnerable crossplane-runtime components.
• Defenders must verify and upgrade affected components to prevent potential attacks.
• Successful exploitation may result in unauthorized access or manipulation of vulnerable components.

Technical summary

The vulnerability affects the function Get of the file pkg/xpkg/client.go of the component ImageConfig in crossplane crossplane-runtime up to 2.2.2/2.3.2, allowing for a time-of-check time-of-use attack. This vulnerability can be exploited remotely, and defenders should prioritize upgrading affected components to prevent potential attacks. The patch identified as bee99c6cd6ca81878acca2940a2f0a02169fc208 should be reviewed and implemented. Affected product deployments should be verified, and compensating controls should be reviewed for exposed systems.

Defensive priority

Defenders should prioritize upgrading affected crossplane-runtime components to prevent potential remote attacks.

Recommended defensive actions

• Upgrade affected crossplane-runtime components to version 2.2.3, 2.3.3, or 2.4.0-rc.1.
• Review and verify the patch identified as bee99c6cd6ca81878acca2940a2f0a02169fc208.
• Monitor for potential remote attacks targeting vulnerable crossplane-runtime components.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The vulnerability was detected in crossplane crossplane-runtime up to 2.2.2/2.3.2 and affects the function Get of the file pkg/xpkg/client.go of the component ImageConfig. Evidence from the source indicates a time-of-check time-of-use vulnerability. Defenders should verify affected versions and review the patch identified as bee99c6cd6ca81878acca2940a2f0a02169fc208 for implementation. Limited source detail suggests explicit verification tasks are needed.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.