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CVE-2026-94488

Quick assessment

Affected
Telegram Telegram Desktop
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Telegram Desktop 在 6.9.4 之前存在 HTML 导出功能中的跨站脚本（XSS）漏洞（首个修复该问题的稳定版本为 7.0.1）。该漏洞位于 export_output_html.cpp 文件中的 button.text.toUtf8 代码处。只有当受害者使用 HTML 导出功能时，攻击者才能利用此漏洞。然而，如果群组成员将包含恶意载荷的消息转发到群组中，则恶意载荷可被导出并触发漏洞（且无需该消息的原始作者为该群组成员）。

CVSS 8.2 · High EPSS 0.20% · P8

Affected Version Matrix 1

VendorProduct Version RangeStatus
Telegram Telegram Desktop 4.15.1< 6.9.4 affected
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I. Basic Information for CVE-2026-94488

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Telegram Telegram Desktop 4.15.1 ~ 6.9.4 -

II. Public POCs for CVE-2026-94488

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III. Intelligence Information for CVE-2026-94488

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Patches & Fixes for CVE-2026-94488 (2)

Other References for CVE-2026-94488 (1)

Other References for CVE-2026-94488 (2)

IV. Related Vulnerabilities

Same product: Telegram Desktop
Same vendor: Telegram
Same weakness: CWE-79

V. Comments for CVE-2026-94488

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