CVE-2020-8288

MEDIUM 5.4CVE-2020-8288 · Published 26/01/2021 · updated 17/06/2026

In short

CVE-2020-8288 is a MEDIUM (CVSS 5.4) vulnerability affecting rocket.chat (rocket.chat).
Chance of exploitation in the next 30 days (EPSS): 0.86%, higher than 58.5% of all vulnerabilities.
Fix: update to 3.9.2 or later.

Package	Affected versions	Patched versions
rocket.chat rocket.chat	`< 3.9.2`	`3.9.2`

Description

The `specializedRendering` function in Rocket.Chat server before 3.9.2 allows a cross-site scripting (XSS) vulnerability by way of the `value` parameter.

References

docs.rocket.chat/guides/security/security-updates · Vendor Advisory
hackerone.com/reports/899954 · Exploit
rocket.chat/xss-vulnerability-hotfix-available-for-all-affected-versions · Patch

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Package

Affected versions

Patched versions

rocket.chat

< 3.9.2

3.9.2

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