CVE-2026-84175
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
In Eclipse Ditto versions 3.0.0 to 3.9.6, the Things service fetches WoT ThingModels over HTTP from URLs supplied by API users in the definition field of a Thing or Feature, without validating the target host, and follows HTTP redirects without re-validating the redirect target and without a hop limit. An authenticated user who is permitted to create a Thing, or who holds WRITE permission on an existing Thing, can thereby cause the Things service to issue arbitrary HTTP GET requests from inside the deployment's network – including to cloud instance-metadata endpoints and other internal services – and can use the differing error responses returned to the caller to enumerate internal services. Versions 2.4.0 to 2.5.x contain the same code, but are only affected where the operator explicitly enabled the WoT integration feature toggle, which is disabled by default in those versions.
Risk Assessment
An authenticated user can leverage the Things service to scan the internal network, access cloud metadata or other internal services, potentially leading to privilege escalation or data leakage.
Recommendation
Update Eclipse Ditto to a version newer than 3.9.6. If not possible, disable the WoT integration or restrict Thing creation/editing access to trusted users.
Other vulnerabilities in Eclipse Ditto
See all- CVE-2026-107503High
In Eclipse Ditto versions 3.6.0 to 3.8.13 and 3.9.0 to 3.9.7, the Ditto Explorer UI loads its environment configuration, including the Ditto API URI and OIDC provider settings, from an arbitrary cross-origin URL supplied in the environmentsURL query parameter. A crafted link can set an attacker-controlled OIDC authority with autoSso enabled, leading to theft of the victim's access and refresh tokens.
- CVE-2026-82958High
In Eclipse Ditto versions [1.3.0, 3.9.6], the ImplicitThingCreationMessageMapper in the connectivity service injects header values into a JSON template without proper escaping, allowing JSON structure break-out and injection of additional fields. An attacker controlling a header (e.g., MQTT 5 user property, AMQP 1.0 application property, or Kafka record header) can inject an inline _policy object, overriding the administrator-configured policyId.
Original NVD description (English source)
In Eclipse Ditto versions 3.0.0 to 3.9.6, the Things service fetches WoT (Web of Things) ThingModels over HTTP from URLs supplied by API users in the definition field of a Thing or Feature, without validating the target host, and follows HTTP redirects without re-validating the redirect target and without a hop limit. An authenticated user who is permitted to create a Thing, or who holds WRITE permission on an existing Thing, can thereby cause the Things service to issue arbitrary HTTP GET requests from inside the deployment's network — including to cloud instance-metadata endpoints and other internal services — and can use the differing error responses returned to the caller to enumerate internal services. Versions 2.4.0 to 2.5.x contain the same code, but are only affected where the operator explicitly enabled the WoT integration feature toggle, which is disabled by default in those versions.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS