CVE-2021-40532

CRITICAL
Published Sep 6, 20214y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Sep 6, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

Telegram Web K Alpha before 0.7.2 mishandles the characters in a document extension.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 1

VendorProductVersionRange
telegramweb_k_alpha* <0.7.2

References 1

  • github.com https://github.com/morethanwords/tweb/commit/f224e459c36eb96b2cf9dba559a48b1f08d23330
    PatchThird Party Advisory

Remediation

  • github.com https://github.com/morethanwords/tweb/commit/f224e459c36eb96b2cf9dba559a48b1f08d23330
    PatchThird Party Advisory