CVE-2025-66823

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 v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
trueconf	server	All

References

Exploits

https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66823/README.md https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66823/README.md

Other References

https://trueconf.com

Frequently Asked Questions

What is 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 functionality. The payload will be triggered when the victim opens the Conference Info page ([conference url]/info). It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-66823? +

CVE-2025-66823 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-66823? +

CVE-2025-66823 affects products from trueconf, specifically: server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66823? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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