Description
An HTML Injection vulnerability in TrueConf server 5.5.2.10813 in the conference description field allows an attacker to inject arbitrary HTML in the Create/Edit conference functionality. The payload will be triggered when the victim opens the Conference Info page ([conference url]/info).
Affected products
trueconf: trueconf server
References3
- github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66823/R… ExploitThird Party Advisory
- github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66823/R… ExploitThird Party Advisory
- trueconf.com Product
Metrics
- CVSS 3.1
-
5.4
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 9 · as of 11 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.