CVE-2025-28254: leantime XSS — Fix

Description

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().

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
leantime	leantime	< 3.3.0

References

Advisories & Patches

https://github.com/Leantime/leantime/commit/ce1d2073e4601183e1bdd90f4b433d16aee46a50 https://github.com/Leantime/leantime/security/advisories/GHSA-95j3-435g-vjcp

Other References

https://github.com/Leantime/leantime/blob/0e7ddbbe3d582f657a1dddfef7b3419ae588cbf7/app/Domain/Notifications/Services/Notifications.php#L128

Frequently Asked Questions

What is CVE-2025-28254? +

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(). It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-28254? +

CVE-2025-28254 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-28254? +

CVE-2025-28254 affects products from leantime, specifically: leantime. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-28254? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-28254