telegram-desktop: Telegram Desktop before 6.9.4 allows XSS in the HTML exporter
CVE-2026-94488 is fixed in telegram-desktop on 1 platform by DEBIAN-CVE-2026-94488 (version 5.7.2+ds-6), released September 21, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Telegram Desktop before 6.9.4 allows XSS in the HTML exporter. (The first fixed stable version is 7.0.1.) This occurs in button.text.toUtf8 in export_output_html.cpp. Exploitation cannot occur unless HTML export was used by a victim. However, the exploit payload can be exported if a message were forwarded into a group by a member (it is not necessary for the message author to be a member of a group).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| telegram-desktop · Debian 14 | 5.7.2+ds-6 | DEBIAN-CVE-2026-94488 | Sep 21, 2026 |
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