Vulnerability · NVD

CVE-2018-20436

CVE-2018-20436, high severity (CVSS 8.1): 1 tracked app concerned, all fixed or indeterminable on their current version.

Severity (CVSS): 8.1
Exploitation: 1.6 %
Tracked apps: 1
Still exposed: 0

Published on 2018-12-24

The "secret chat" feature in Telegram 4.9.1 for Android has a "side channel" in which Telegram servers send GET requests for URLs typed while composing a chat message, before that chat message is sent. There are also GET requests to other URLs on the same web server. This also affects one or more other Telegram products, such as Telegram Web-version 0.7.0. In addition, it can be interpreted as an SSRF issue. NOTE: a third party has reported that potentially unwanted behavior is caused by misconfiguration of the "Secret chats > Preview links" setting

Attack vector : Network No privileges required No user interaction

Show raw CVSS vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS 1.55% above median percentile 74.1%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

Telegram Android org.telegram.messenger

Affected - Fixed in - Latest tracked 12.10.1 undetermined

Vulnerable CPE configurations (1)

Vendor	Product	Platform	Versions	CPE 2.3 URI
telegram	telegram Android	Android	-	cpe:2.3:a:telegram:telegram:4.9.1:::::android::

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