CVE-2021-34425: Server Side Request Forgery in Zoom Client for Meetings chat

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-12-14 · updated 2026-06-17
Weakness: CWE-918

Description

The Zoom Client for Meetings before version 5.7.3 (for Android, iOS, Linux, macOS, and Windows) contain a server side request forgery vulnerability in the chat\'s "link preview" functionality. In versions prior to 5.7.3, if a user were to enable the chat\'s "link preview" feature, a malicious actor could trick the user into potentially sending arbitrary HTTP GET requests to URLs that the actor cannot reach directly.

Affected products

Zoom Workplace: before 5.7.3 — fixed in 5.7.3

How to fix

Upgrade to a fixed version: Zoom Workplace 5.7.3. Check the vendor advisory for mitigations.

References

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