HIGH 8.3 NVD
CVE-2026-94488
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_htm
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).
References
- https://expatch.com/writeups/telegram-html-export-xss.html
- https://github.com/telegramdesktop/tdesktop/blob/v6.9.3/Telegram/SourceFiles/export/output
- https://github.com/telegramdesktop/tdesktop/commit/52c779bffa8dde3c5c09826add2607328fae092
- https://github.com/telegramdesktop/tdesktop/commit/8457d13aa795fadf99c955d2a04f00ebc3c59df
- https://github.com/telegramdesktop/tdesktop/releases/tag/v6.9.4
This high severity vulnerability with a CVSS score of 8.3 was published on 2026-09-21 via NVD.
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