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Server-side request forgery in DataLinkDC Dinky flink_web proxy

Priority LOW 31CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

DataLinkDC Dinky versions 1.2.0 up to 1.2.5 contain a server-side request forgery flaw (CWE-918) in the flink_web proxy endpoint. Manipulating the _authority argument makes the server send requests to destinations chosen by the attacker. A remote attacker needs no privileges and no user interaction. A public exploit has been published and may be used.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

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.

Why it matters now

EPSS 0.005 43rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
DataLinkDCDinky1.2.0; 1.2.1; 1.2.2; 1.2.3; 1.2.4; 1.2.5—No fix listedCNA
  • Dinky VendorDataLinkDC Affected 1.2.0; 1.2.1; 1.2.2; 1.2.3; 1.2.4; 1.2.5 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:datalinkdc:dinky:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:datalinkdc:dinky:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

The sources list no fixed version for Dinky.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Timeline

  1. 2026-11-04 Threatist record created from CVE-2026-122009
  2. 2026-11-04 Alias added: GHSA-4fjq-hmwv-pfv4
  3. 2026-11-06 Priority changed: MEDIUM → LOW

References

  • TI-2026-02637 DataLinkDC dinky OpenAPI Endpoint AppConfig.java addInterceptors missing authentication CVSS 4.0MEDIUM 6.9
  • TI-2026-02636 DataLinkDC dinky Flink Proxy Controller FlinkProxyController.java proxyUba server-side request forgery CVSS 4.0MEDIUM 5.3
  • TI-2026-02635 DataLinkDC dinky Project Name GitRepository.java getProjectDir path traversal CVSS 4.0MEDIUM 5.3
  • TI-2026-49279 Dinky Unauthenticated Arbitrary File Write via /download/uploadFromRsByLocal Gated Only by Hardcoded Default Token CVSS 4.0CRITICAL 9.3
  • TI-2026-49280 Dinky Unauthenticated System Configuration and Credential Disclosure via GET /api/sysConfig/getAll CVSS 4.0HIGH 8.7
  • TI-2026-86783 Path traversal in DataLinkDC Dinky catalogue upload CVSS 4.0MEDIUM 5.3

Sources