What’s Vulnerable › Vulnerabilities

CVE-2020-8288

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-26 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• Rocket.Chat: before 3.9.2 — fixed in 3.9.2

How to fix

Upgrade to a fixed version: Rocket.Chat 3.9.2. Check the vendor advisory for mitigations.

References

• https://docs.rocket.chat/guides/security/security-updates
• https://hackerone.com/reports/899954
• https://rocket.chat/xss-vulnerability-hotfix-available-for-all-affected-versions/
• https://docs.rocket.chat/guides/security/security-updates
• https://hackerone.com/reports/899954
• https://rocket.chat/xss-vulnerability-hotfix-available-for-all-affected-versions/

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