CVE-2026-82958 Eclipse Foundation CVE debrief

Who should care

Defenders responsible for Eclipse Ditto deployments, particularly those using the ImplicitThingCreation mapper, should assess exposure and verify versions. Restricting connection subjects to thing creation only may mitigate the policy-override impact.

Why it matters

CVE-2026-82958 allows an attacker to inject an inline policy object, potentially gaining full read/write access to a newly created digital twin and revoking the legitimate owner's access. Defenders should prioritize verifying and updating Eclipse Ditto versions, restricting connection subjects, and monitoring for suspicious activity.

• Potential unauthorized access to digital twins
• Possible revocation of legitimate owner's access
• Need for verification of Eclipse Ditto versions and configurations
• Importance of monitoring for suspicious activity

Technical summary

The ImplicitThingCreationMessageMapper of the connectivity service in Eclipse Ditto versions [1.3.0, 3.9.6] builds a CreateThing command by substituting placeholder values from inbound message headers into a pre-configured JSON 'thing' template as raw, un-escaped strings. This allows an attacker to inject an inline policy object by publishing a message with a specially crafted header, potentially gaining full read/write access to a newly created digital twin and revoking the legitimate owner's access. The vulnerability can be exploited by publishing a message with a specially crafted header, and the attacker must be able to control the header value. The connection's authorization subjects must be permitted to

Defensive priority

Defenders should prioritize verifying and updating Eclipse Ditto versions to 3.9.7 or later, restricting connection subjects to thing creation only, and monitoring for suspicious activity.

Recommended defensive actions

• Verify and update Eclipse Ditto versions to 3.9.7 or later
• Restrict connection subjects to thing creation only
• Monitor for suspicious activity
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, including its description, CVSS score, and affected versions. The Eclipse Foundation has also provided a security advisory on GitHub and GitLab.

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.