CVE-2026-3321 in ON24 Q&A Chat
Résumé (Anglaise)
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.
Responsable
INCIBE
Réserver
27/02/2026
Divulgation
30/03/2026
Entrées
| ID | Vulnérabilité | CWE | Base | Temp | 0day | Aujourd'hui | Exp | KEV | EPSS | CTI | Con | CVE |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 354190 | ON24 Q&A Chat History answer élévation de privilèges | 639 | 5.3 | 5.3 | $0-$5k | $0-$5k | Non défini | 0.00000 | 4.44+ | Non défini | CVE-2026-3321 |