DINKY · CVE-2026-122009 · Package
NO FIX YET
Dinky, a Flink data platform, has a flaw in its Flink web proxy endpoint where the _authority argument is not validated. A remote attacker can make the Dinky server send requests to addresses of their choosing, which can reach internal services.
first public Nov 4, 2026 · 2 sources
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Teams running Dinky 1.2.5 or earlier with the Flink web proxy endpoint reachable over the network are exposed. Deployments where Dinky admin is not reachable from untrusted networks are less exposed. The sources do not say which configurations are default.
Not affected if admin-not-network-reachable, dinky-newer-than-1.2.5
Who cares dinky, flink, self-hosted
No fix yet, per the sources.
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A flaw has been found in DataLinkDC Dinky up to 1.2.5. This vulnerability affects the function FlinkWebURITemplateProxyServlet.getNewTargetUri of the file dinky-admin/src/main/java/org/dinky/utils/FlinkWebURITemplateProxyServlet.java of the component flink_web Proxy Endpoint. This manipulation of the argument _authority causes server-side request forgery. The attack can be initiated remotely. The exploit has been published and may be used. The researcher claims to have submitted a GHSA on the repository of the project.
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