What is CVE-2026-47733?

CVE-2026-47733 is a medium-severity vulnerability in Rocketchat Rocket.chat, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-06-24.

How severe is CVE-2026-47733?

Medium severity. CVSS v3 base score is 4.4 out of 10.

XSS in Rocketchat Rocket.chat

CVE-2026-47733

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, the ImageElement component in packages/gazzodown renders user-controlled src values directly into <a href> and <img src> attributes without…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Rocketchat Rocket.chat — versions < 8.5.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-47733?: CVE-2026-47733 is a medium-severity vulnerability in Rocketchat Rocket.chat, classified under Cross-site Scripting. CVSS score: 4.4/10. Published 2026-06-24.
How severe is CVE-2026-47733?: Medium severity. CVSS v3 base score is 4.4 out of 10.