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 ↗

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

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

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