PT-2026-29024 · On24 · On24 Q&A Chat

Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-3321

NVD

CVSS v4.0

8.7

High

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N/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

A vulnerability of authorization bypass through user-controlled key in the 'console-survey/api/v1/answer/{EVENTID}/{TIMESTAMP}/' endpoint. Exploiting this vulnerability would allow an unauthenticated attacker to enumerate event IDs and obtain the complete Q&A history. This publicly exposed data may include IDs, private URLs, private messages, internal references, or other sensitive information that should only be exposed to authenticated users. In addition, the leaked content could be exploited to facilitate other malicious activities, such as reconnaissance for lateral movement, exploitation of related systems, or unauthorised access to internal applications referenced in the content of chat messages.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-3321

Affected Products

On24 Q&A Chat

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-3321 · Security Note
• https://incibe.es/en/incibe-cert/notices/aviso/authorization-bypass-on24-qa-chat · Note