What’s Vulnerable › Vulnerabilities

CVE-2023-33198: Incorrectly Specified Chat Message Destinations in tgstation-server and DreamMaker API

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-05-30 · updated 2026-06-17
• Weakness: CWE-941

Description

tgstation-server is a production scale tool for BYOND server management. The DreamMaker API (DMAPI) chat channel cache can possibly be poisoned by a tgstation-server (TGS) restart and reattach. This can result in sending chat messages to one of any of the configured IRC or Discord channels for the instance on enabled chat bots. This lasts until the instance's chat channels are updated in TGS or DreamDaemon is restarted. TGS chat commands are unaffected, custom or otherwise.

Affected products

• tgstation-server: from 4.0.0 before 5.12.2 — fixed in 5.12.2

How to fix

Upgrade to a fixed version: tgstation-server 5.12.2. Check the vendor advisory for mitigations.

References

• https://github.com/tgstation/tgstation-server/pull/1493
• https://github.com/tgstation/tgstation-server/releases/tag/tgstation-server-v5.12.2
• https://github.com/tgstation/tgstation-server/security/advisories/GHSA-p2xj-w57r-6f5m
• https://github.com/tgstation/tgstation-server/pull/1493
• https://github.com/tgstation/tgstation-server/releases/tag/tgstation-server-v5.12.2
• https://github.com/tgstation/tgstation-server/security/advisories/GHSA-p2xj-w57r-6f5m

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