CVE-2026-82958 Eclipse Foundation CVE debrief

Who should care

Users of Eclipse Ditto, administrators of affected systems, security teams responsible for vulnerability management, and operators of potentially exposed platforms should review and address this vulnerability to prevent unauthorized access and policy overrides.

Technical summary

Eclipse Ditto versions [1.3.0, 3.9.6] are vulnerable to policy override and unauthorized access due to improper handling of placeholder values in the ImplicitThingCreationMessageMapper. The vulnerability allows an attacker to inject an inline policy object, potentially gaining full read/write access to the newly created digital twin and revoking the legitimate owner's access. This is because the placeholder engine performs no JSON escaping and is unaware of the surrounding JSON string context, allowing a resolved value containing a double-quote character to break out of its string and inject additional JSON structure. The vulnerability can be exploited by publishing on a connection configured to use this mapper with a template that reflects a header whose value a publishing device can control. The connection's authorization subjects must be permitted to create policies for the policy-override impact. The default configuration is vulnerable, but deployments restricting the connection's subjects to thing creation only are not affected by the policy-override impact.

Defensive priority

High priority due to high CVSS score of 7.6 and potential for policy override

Recommended defensive actions

• Review and update Eclipse Ditto configurations to prevent exploitation
• Restrict connection subjects to thing creation only via entity-creation configuration
• Monitor for suspicious activity and implement compensating controls
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

Evidence from official CVE Program record and NIST NVD detail page. Limited information available on exploitation and affected systems. The CVE record was published on 2026-09-02T11:17:24.773Z and has not been modified since then. The NVD entry is currently Deferred. Users should verify the affected versions of Eclipse Ditto and review configurations for potential exposure.

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.