# CVE-2026-72529: TrueConf Server missing authentication for critical function

Source: https://junglewise.ai/threats/cve-2026-72529-trueconf-server-missing-authentication-for-critical-function  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-19. Updated: 2026-09-24  
License: CC BY 4.0 with a link back

CVE-2026-72529 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2026-08-19

TrueConf Server is a video conferencing and unified communications platform used by organizations to enable remote collaboration. A missing authentication vulnerability in the server allows unauthenticated attackers to execute arbitrary scripts remotely over the network, potentially leading to complete system compromise, data theft, and service disruption.

Technologies: [TrueConf Server](https://junglewise.ai/threats/technologies/trueconf-server). Vendors: [Trueconf](https://junglewise.ai/threats/vendors/trueconf).

## Quick answers

**Is CVE-2026-72529 exploited in the wild?** Yes. CVE-2026-72529 is known to be exploited in the wild, first recorded on 20 August 2026. Treat it as urgent.

**How severe is CVE-2026-72529?** Critical severity, with a CVSS score of 9.8, published 19 August 2026.

**Which products and versions are affected?** TrueConf TrueConf Server.

**Is there a fix for CVE-2026-72529?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-72529 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-72529?** Check whether you run TrueConf Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

TrueConf Server fails to implement proper authentication checks on a critical functionality exposed on port 4307/TCP. An unauthenticated attacker on the network can directly invoke this function without providing credentials, leading to arbitrary script execution on the server. The vulnerability is an authentication bypass (CWE-306: Missing Authentication for Critical Function) that requires only network access to the affected port. Since the vulnerability has been observed in active exploitation, attackers can leverage this to gain code execution, establish persistence, exfiltrate data, or pivot within the target network. Patches or updates should be applied immediately to enable authentication controls on the exposed functionality.

## Affected products

- TrueConf TrueConf Server

## Timeline

- 2026-08-20: disclosed
- 2026-08-20: exploited

## Related threats

- [TrueConf Server code injection vulnerability](https://junglewise.ai/threats/cve-2026-72530-trueconf-server-code-injection-vulnerability)
- [TrueConf Server HTML injection in conference description](https://junglewise.ai/threats/cve-2025-66823-trueconf-server-html-injection-in-conference-description)
- [TrueConf Server CSV formula injection via Display Name](https://junglewise.ai/threats/cve-2025-66834-trueconf-server-csv-formula-injection-via-display-name)
- [TrueConf Server stored cross-site scripting in meeting location field](https://junglewise.ai/threats/cve-2025-66824-trueconf-server-stored-cross-site-scripting-in-meeting-location)