CVE-2026-40457
Reflected XSS in LMS
Description
A Reflected Cross-Site Scripting (XSS) vulnerability exists in LMS (LAN Management System) before commit 9c5651b in the "dbrecover.php" and "netremap.php" modules where unsanitized GET parameters are directly embedded into HTML output. This allows an attacker to inject arbitrary JavaScript when an authenticated user clicks a crafted link, provided the required conditions (such as a network defined in the system) are met.
INFO
Published Date :
June 18, 2026, 10:58 a.m.
Last Modified :
June 18, 2026, 10:58 a.m.
Remotely Exploit :
Yes !
Source :
CERT-PL
Affected Products
The following products are affected by CVE-2026-40457
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | LOW | 4bb8329e-dd38-46c1-aafb-9bf32bcb93c6 |
Solution
- Update LMS to commit 9c5651b or later.
- Sanitize all GET parameters before embedding them in HTML.
- Validate network conditions before processing requests.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40457 vulnerability anywhere in the article.