CVE-2018-20436 describes a side-channel vulnerability in Telegram 4.9.1 for Android's "secret chat" feature, and Telegram Web-version 0.7.0, where the application sends GET requests for URLs typed by a user before the message is sent. This could also be interpreted as a Server-Side Request Forgery (SSRF) issue. The vulnerability carries a high CVSS score of 8.1, indicating a severe impact with high confidentiality, integrity, and availability concerns, though it requires high attack complexity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
4.9.1CPE matchmatch criteria | cpe:2.3:a:telegram:telegram:4.9.1:*:*:*:*:android:*:* | ||
0.7.0CPE matchmatch criteria | cpe:2.3:a:telegram:web:0.7.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.