CVE-2021-25828

Name: CVE-2021-25828
Creator: NVD / NIST
Published: 2023-06-28T20:15:09.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2021-25828 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Emby Server versions < 4.6.0.50 is vulnerable to Cross Site Scripting (XSS) vulnerability via a crafted GET request to /web.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

Emby Server versions < 4.6.0.50 is vulnerable to Cross Site Scripting (XSS) vulnerability via a crafted GET request to /web.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.45%

35.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Emby	Emby	< 4.6.0.50

References

https://github.com/MediaBrowser/Emby/issues/3785Exploit, Issue Tracking, Patch
https://github.com/MediaBrowser/Emby/issues/3785Exploit, Issue Tracking, Patch

Timeline

Published: Jun 28, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25828?

Emby Server versions < 4.6.0.50 is vulnerable to Cross Site Scripting (XSS) vulnerability via a crafted GET request to /web.

How severe is CVE-2021-25828?

CVE-2021-25828 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25828?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25828?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST