CVE-2019-15514: Telegram

Medium severity, CVSS 5.3. EPSS: 2.3% chance of exploitation in the next 30 days.

The Privacy > Phone Number feature in the Telegram app 5.10 for Android and iOS provides an incorrect indication that the access level is Nobody, because attackers can find these numbers via the Group Info feature, e.g., by adding a significant fraction of a region's assigned phone numbers.

Affected products

• Telegram Telegram: version 5.10.0 only

Published 2019-08-23. Last modified 2026-06-17.