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Description

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. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-05-02 | Published 2026-05-03 | Updated 2026-05-03 | Assigner VulDB




MEDIUM: 5.3CVSS: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
MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
MEDIUM: 4.3CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
5.0AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:ND/RC:UR

Problem types

NULL Pointer Dereference

Denial of Service

Product status

6.7.0
affected

6.7.1
affected

6.7.2
affected

6.7.3
affected

6.7.4
affected

6.7.5
affected

Timeline

2026-05-02:Advisory disclosed
2026-05-02:VulDB entry created
2026-05-02:VulDB entry last update

Credits

oblivionsage (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/360870 (VDB-360870 | Telegram Desktop Bot API url_auth_box.cpp RequestButton null pointer dereference) vdb-entry technical-description

vuldb.com/vuln/360870/cti (VDB-360870 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/submit/804341 (Submit #804341 | Telegram Telegram Desktop <= 6.7.5 NULL Pointer Dereference) third-party-advisory

www.youtube.com/watch?v=xo9Bplsy1K8 media-coverage

cve.org (CVE-2026-7701)

nvd.nist.gov (CVE-2026-7701)

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