A CSV Formula Injection vulnerability in TrueConf Server v5.5.2.10813 allows a normal user to inject malicious spreadsheet formulas into exported chat logs via crafted Display Name.

High CVSS 7.3

CVECVE-2025-66834

First seen2026-08-20 20:15 UTC

Disclosed2025-12-30 19:15 UTC

Last updated2026-08-20 20:15 UTC

Channel statusauto

Summary

A CSV Formula Injection vulnerability in TrueConf Server v5.5.2.10813 allows a normal user to inject malicious spreadsheet formulas into exported chat logs via crafted Display Name.

In-depth triage

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

Sources

NVD DATABASE

Original Links

https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md Exploit
https://trueconf.com Product
https://github.com/x00nullbit/CVE-References/blob/main/CVE-2025-66834/README.md Exploit

Timeline

2026-08-20 nvd_ingest NVD