---
title: "CVE-2026-94488: Telegram Desktop - Stored XSS"
description: "Telegram Desktop < 6.9.4 contains a stored XSS caused by improper sanitization in HTML exporter component button.text.toUtf8, letting attackers execute scripts via exported HTML, exploit requires victim to use HTML export."
url: https://panop.io/threat-heartbeat/CVE-2026-94488/
---

# CVE-2026-94488 Telegram Desktop - Stored XSS

Telegram Desktop < 6.9.4 contains a stored XSS caused by improper sanitization in HTML exporter component button.text.toUtf8, letting attackers execute scripts via exported HTML, exploit requires victim to use HTML export.

CVSS base score 8.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-94488)

## Details

Type

Stored XSS

Impact

Stored XSS

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Published

21 September 2026

Updated

15 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to version 7.0.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-94488](https://nvd.nist.gov/vuln/detail/CVE-2026-94488)
- [https://github.com/telegramdesktop/tdesktop/blob/v6.9.3/Telegram/SourceFiles/export/output/export\_output\_html.cpp](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/52c779bffa8dde3c5c09826add2607328fae0924)
- [https://github.com/telegramdesktop/tdesktop/commit/8457d13aa795fadf99c955d2a04f00ebc3c59df9](https://github.com/telegramdesktop/tdesktop/commit/8457d13aa795fadf99c955d2a04f00ebc3c59df9)
- [https://github.com/telegramdesktop/tdesktop/releases/tag/v6.9.4](https://github.com/telegramdesktop/tdesktop/releases/tag/v6.9.4)
- [https://thehackernews.com/2026/09/telegram-desktop-flaw-lets-hidden.html](https://thehackernews.com/2026/09/telegram-desktop-flaw-lets-hidden.html)
- [https://expatch.com/writeups/telegram-html-export-xss.html](https://expatch.com/writeups/telegram-html-export-xss.html)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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