Medium severity · published Dec 30, 2025
CVE-2025-66823
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…
5.4
CVSS
0.2%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 9% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TS
Trueconf Server · Trueconf
5.5.2.10813 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66823
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-66823
Exploit
https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66823/README.md
Product
https://trueconf.com
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