CVE-2026-7701 (GCVE-0-2026-7701)

Vulnerability from cvelistv5 – Published: 2026-05-03 15:30 – Updated: 2026-05-19 13:35 Disputed
VLAI
Title
Telegram Desktop Bot API url_auth_box.cpp RequestButton null pointer dereference
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."
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
4.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/360870 vdb-entrytechnical-description
https://vuldb.com/vuln/360870/cti signaturepermissions-required
https://vuldb.com/submit/804341 third-party-advisory
https://www.youtube.com/watch?v=xo9Bplsy1K8 media-coverage
Impacted products
Vendor Product Version
Telegram Desktop Affected: 6.7.0
Affected: 6.7.1
Affected: 6.7.2
Affected: 6.7.3
Affected: 6.7.4
Affected: 6.7.5
Unaffected: 6.7.6
    cpe:2.3:a:telegram:desktop:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
oblivionsage (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.