EUVD-2026-16593CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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3Description
A user with permission "update world" in any Venueless world is able to exfiltrate chat messages from direct messages or channels in other worlds on the same server due to a bug in the reporting feature. The exploitability is limited by the fact that the attacker needs to know the internal channel UUID of the chat channel, which is unlikely to be obtained by an outside attacker, especially for direct messages.
Analysis
Venueless instances allow authenticated users with 'update world' permissions to exfiltrate chat messages from direct messages or other worlds' channels via a flaw in the reporting feature, provided the attacker can obtain the target channel's internal UUID. This cross-world information disclosure affects Pretix Venueless across versions prior to patching, and exploitability is constrained by the requirement to discover internal identifiers that are not typically exposed to unauthorized users.
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.
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