Cross-site Scripting (XSS) Affecting telegram-desktop package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ECHOLATEST-TELEGRAMDESKTOP-20675263
- published9 Oct 2026
- disclosed21 Sept 2026
Introduced: 21 Sep 2026
NewCVE-2026-94488 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest telegram-desktop.
NVD Description
Note: Versions mentioned in the description apply only to the upstream telegram-desktop package and not the telegram-desktop package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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://advisory.echohq.com/cve/CVE-2026-94488
- https://expatch.com/writeups/telegram-html-export-xss.html
- https://github.com/telegramdesktop/tdesktop/blob/v6.9.3/Telegram/SourceFiles/export/output/export_output_html.cpp
- https://github.com/telegramdesktop/tdesktop/commit/52c779bffa8dde3c5c09826add2607328fae0924
- https://github.com/telegramdesktop/tdesktop/commit/8457d13aa795fadf99c955d2a04f00ebc3c59df9
- https://github.com/telegramdesktop/tdesktop/releases/tag/v6.9.4
- https://thehackernews.com/2026/09/telegram-desktop-flaw-lets-hidden.html