How to fix CVE-2025-28254?

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

Is Leantime affected by CVE-2025-28254?

Organizations using Leantime should be aware of moderate risk from CVE-2025-28254, a cross-site scripting vulnerability rated CVSS 5.4. Attackers could inject scripts to steal sessions or perform actions as authenticated users.

CVE-2025-28254

MEDIUM

2025-03-28 [email protected]

RCE XSS Leantime

5.4

CVSS 3.1

CVSS VectorNVD

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

Analysis Generated

Mar 28, 2026 - 18:33 vuln.today

Patch Released

Mar 28, 2026 - 18:33 nvd

Patch available

CVE Published

Mar 28, 2025 - 21:15 nvd

MEDIUM 5.4

DescriptionNVD

AnalysisAI

Cross Site Scripting vulnerability in Leantime v3.2.1 and before allows an authenticated attacker to execute arbitrary code and obtain sensitive information via the first name field in. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. Cross Site Scripting vulnerability in Leantime v3.2.1 and before allows an authenticated attacker to execute arbitrary code and obtain sensitive information via the first name field in processMentions(). Affected products include: Leantime.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

CVE-2025-28254 vulnerability details – vuln.today

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