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TI-2026-06783 Aliases CVE-2026-7701GHSA-8hhg-crp9-v482

Telegram Desktop Bot API url_auth_box.cpp RequestButton null pointer dereference

Priority MEDIUM 57CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.

Summary

A security vulnerability has been detected in Telegram Desktop up to 6.7.5. This vulnerability affects the function RequestButton of the file Telegram/SourceFiles/boxes/url_auth_box.cpp of the component Bot API. The manipulation of the argument login_url leads to null pointer dereference. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used. There is ongoing doubt regarding the real existence of this vulnerability. Upgrading to version 6.7.6 is able to resolve this issue. Upgrading the affected component is recommended. The vendor provides this rationale for the dispute: "[T]he described scenario does not lead to any security issue or vulnerability, and only causes a one-time crash. In the outlined scenario, the targeted user must perform an active action, which doesn't produce any consequences after the app is relaunched."

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00389 33rd percentileScored 2026-11-07
Fix Fixed Desktop (Telegram): 6.7.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TelegramDesktop6.7.0; 6.7.1; 6.7.2; 6.7.3; 6.7.4; 6.7.56.7.6Patch availableCNA
  • Desktop VendorTelegram Affected 6.7.0; 6.7.1; 6.7.2; 6.7.3; 6.7.4; 6.7.5 Fixed in 6.7.6 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:telegram:desktop:*:*:*:*:*:*:*:*——Telegram
  • cpe:2.3:a:telegram:desktop:*:*:*:*:*:*:*:* Versions — — ·Telegram

Remediation

  • Fix · CNA Desktop (Telegram) Fixed in 6.7.6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-7701
  2. 2026-10-03 Alias added: GHSA-8hhg-crp9-v482

References

Other 1

  • TI-2026-69140 Telegram Desktop IPC Record Injection Enables File Exfiltration CVSS 4.0HIGH 8.6
  • TI-2026-63443 Cross-site scripting in Telegram Desktop CVSS 4.0HIGH 8.3
  • TI-2018-11088 An issue was discovered in the org.telegram.messenger application 4.8.11 for Android. CVSS 3.0MEDIUM 6.8
  • TI-2021-10892 The Telegram app 7.6.2 for iOS allows remote authenticated users to cause a denial of… CVSS 3.1MEDIUM 5.7
  • TI-2023-11787 Telegram 9.3.1 and 9.4.0 allows attackers to access restricted files, microphone ,or… CVSS 3.1MEDIUM 5.5
  • TI-2021-22409 Telegram Desktop 2.9.2 - Denial of Service (PoC) CVSS 4.0MEDIUM 4.6
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences