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VULNERABILITIES

CVE-2026-94488 Details

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).

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:8.2 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://expatch.com/writeups/telegram-html-export-xss.html [email protected]
https://github.com/telegramdesktop/tdesktop/blob/v6.9.3/Telegram/SourceFiles/export/output/export_output_html.cpp [email protected]
https://github.com/telegramdesktop/tdesktop/commit/52c779bffa8dde3c5c09826add2607328fae0924 [email protected]
https://github.com/telegramdesktop/tdesktop/commit/8457d13aa795fadf99c955d2a04f00ebc3c59df9 [email protected]
https://github.com/telegramdesktop/tdesktop/releases/tag/v6.9.4 [email protected]

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-94488
NVD Published Date:
Sep 21, 2026
NVD Last Modified:
Sep 22, 2026
Source:
[email protected]
CVE-2026-94488 Details - Not Deferred