CVE-2026-21431

MEDIUM
2026-01-02 [email protected]
5.4
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 16, 2026 - 17:13 vuln.today
Public exploit code
CVE Published
Jan 02, 2026 - 19:15 nvd
MEDIUM 5.4

Tags

XSS Emlog

Description

Emlog is an open source website building system. Version 2.5.23 has a stored cross-site scripting vulnerability in the `Resource media library ` function while publishing an article. As of time of publication, no known patched versions are available.

Analysis

Stored XSS in Emlog 2.5.23's media library function allows authenticated attackers to inject malicious scripts when publishing articles, which execute in other users' browsers with scope crossing enabled. Public exploit code exists for this vulnerability, and no patched version is currently available. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

47
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: +20

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CVE-2026-21431 vulnerability details – vuln.today
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