CVE-2026-94488Telegram Desktop before 6.9.4 allows XSS in the HTML exporter.
Updated under an hour ago ()
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It affects Telegram Desktop. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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).
- CVSS
- 8.2 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Telegram Telegram Desktop telegram:desktop (from the name) | from 4.15.1 before 6.9.4 | CNA record |
References
- https://github.com/telegramdesktop/tdesktop/commit/8457d13aa795fadf99c955d2a04f00ebc3c59df9patch
- https://github.com/telegramdesktop/tdesktop/commit/52c779bffa8dde3c5c09826add2607328fae0924related
- https://github.com/telegramdesktop/tdesktop/releases/tag/v6.9.4release-notes
- https://github.com/telegramdesktop/tdesktop/blob/v6.9.3/Telegram/SourceFiles/export/output/export_output_html.cpprelated
- https://expatch.com/writeups/telegram-html-export-xss.htmlthird-party-advisory, technical-description, exploit
- https://thehackernews.com/2026/09/telegram-desktop-flaw-lets-hidden.htmlmedia-coverage
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.