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UBUNTU-CVE-2026-7701

Type: advisorySource: OSV1 source record

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."

Announced Source revision 1
Original source ↗

UBUNTU-CVE-2026-7701

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:UBUNTU-CVE-2026-7701

telegram-desktop

Source reference: /affected/0/package/name

Affected versions
1.1.23-1

Source reference: /affected/0/versions

1.1.23-1build1

Source reference: /affected/0/versions

1.1.23-2

Source reference: /affected/0/versions

1.1.23-3

Source reference: /affected/0/versions

1.2.6-1

Source reference: /affected/0/versions

1.2.6-2

Source reference: /affected/0/versions

1.2.6-2build1

Source reference: /affected/0/versions

1.2.6-2build2

Source reference: /affected/0/versions

1.2.6-2build3

Source reference: /affected/0/versions

1.2.15-1

Source reference: /affected/0/versions

1.2.15-1build1

Source reference: /affected/0/versions

1.2.17-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

telegram-desktop

Source reference: /affected/1/package/name

Affected versions
1.8.8-1

Source reference: /affected/1/versions

1.8.15-2

Source reference: /affected/1/versions

1.9.8~slim-1

Source reference: /affected/1/versions

1.9.14+ds-1

Source reference: /affected/1/versions

1.9.14+ds-2

Source reference: /affected/1/versions

1.9.21+ds-1

Source reference: /affected/1/versions

2.0.1+ds-1

Source reference: /affected/1/versions

2.0.1+ds-1build1

Source reference: /affected/1/versions

2.1.7+ds-2~ubuntu20.04.1

Source reference: /affected/1/versions

3.1.1+ds-1~ubuntu20.04.1

Source reference: /affected/1/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

telegram-desktop

Source reference: /affected/2/package/name

Affected versions
3.1.1+ds-1

Source reference: /affected/2/versions

3.5.2+ds-1

Source reference: /affected/2/versions

3.6.1+ds-2build1

Source reference: /affected/2/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "telegram-desktop",
      "purl": "pkg:deb/ubuntu/telegram-desktop?arch=source&distro=bionic",
      "ecosystem": "Ubuntu:18.04:LTS"
    },
    "versions": [
      "1.1.23-1",
      "1.1.23-1build1",
      "1.1.23-2",
      "1.1.23-3",
      "1.2.6-1",
      "1.2.6-2",
      "1.2.6-2build1",
      "1.2.6-2build2",
      "1.2.6-2build3",
      "1.2.15-1",
      "1.2.15-1build1",
      "1.2.17-1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7701.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "telegram-desktop",
          "binary_version": "1.2.17-1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "telegram-desktop",
      "purl": "pkg:deb/ubuntu/telegram-desktop?arch=source&distro=focal",
      "ecosystem": "Ubuntu:20.04:LTS"
    },
    "versions": [
      "1.8.8-1",
      "1.8.15-2",
      "1.9.8~slim-1",
      "1.9.14+ds-1",
      "1.9.14+ds-2",
      "1.9.21+ds-1",
      "2.0.1+ds-1",
      "2.0.1+ds-1build1",
      "2.1.7+ds-2~ubuntu20.04.1",
      "3.1.1+ds-1~ubuntu20.04.1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7701.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "telegram-desktop",
          "binary_version": "3.1.1+ds-1~ubuntu20.04.1"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "telegram-desktop",
      "purl": "pkg:deb/ubuntu/telegram-desktop?arch=source&distro=jammy",
      "ecosystem": "Ubuntu:22.04:LTS"
    },
    "versions": [
      "3.1.1+ds-1",
      "3.5.2+ds-1",
      "3.6.1+ds-2build1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-7701.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "telegram-desktop",
          "binary_version": "3.6.1+ds-2build1"
        }
      ]
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#51963 · Revision 1
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Publisher date
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