← Vulnerability feed

Vulnerability record · CVE-2021-25828 · published 28 June 2023

CVE-2021-25828: Emby cross-site scripting vulnerability

Emby · Emby

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

6.1 CVSS 3.1 Medium EPSS 0.53% · top 57.5% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/MediaBrowser/Emby/issues/3785 ExploitIssue TrackingPatch
https://github.com/MediaBrowser/Emby/issues/3785 ExploitIssue TrackingPatch

Track CVE-2021-25828 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-25827Emby authentication bypass by spoofing vulnerabilityEmby Server < 4.7.12.0 is vulnerable to a login bypass attack by setting the X-Forwarded-For header to a local IP-address.EPSS 1.5%9.8CVE-2020-26948Emby Server SSRF in RemoteSearch Image URL parameterEmby Server before 4.5.0 is vulnerable to server-side request forgery through the ImageURL parameter of the Items/RemoteSearch/Image endpoint. An una…EPSS 87%analysed9.3CVE-2025-64113Emby weak password recovery vulnerabilityEmby Server is a user-installable home media server. Versions below 4.9.1.81 allow an attacker to gain full administrative access to an Emby Server (…EPSS 0.59%8.4CVE-2025-64325Emby cross-site scripting vulnerabilityEmby Server is a personal media server. Prior to version 4.8.1.0 and prior to Beta version 4.9.0.0-beta, a malicious user can send an authentication …EPSS 0.42%6.1CVE-2022-36223Emby cross-site scripting vulnerabilityIn Emby Server 4.6.7.0, the playlist name field is vulnerable to XSS stored where it is possible to steal the administrator access token and flip or …EPSS 0.42%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed6.1CVE-2025-66376Zimbra Collaboration Classic UI stored XSS via CSS @import in emailZimbra Collaboration Suite 10 before 10.0.18 and 10.1 before 10.1.13 allows stored cross-site scripting in the Classic UI through CSS @import directi…KEVEPSS 20%analysed

Source: NIST National Vulnerability Database (record CVE-2021-25828), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.