Vulnerability-Lookup

GHSA-3VRH-XVG4-68RM

Vulnerability from github – Published: 2026-06-18 15:32 – Updated: 2026-06-18 15:32

Details

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.

Severity

2.1 (Low)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-40457"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-18T14:17:24Z",
    "severity": "LOW"
  },
  "details": "A Reflected Cross-Site Scripting (XSS) vulnerability exists in LMS (LAN Management System)\u00a0before 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.",
  "id": "GHSA-3vrh-xvg4-68rm",
  "modified": "2026-06-18T15:32:02Z",
  "published": "2026-06-18T15:32:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40457"
    },
    {
      "type": "WEB",
      "url": "https://github.com/chilek/lms/commit/9c5651b39bfd086cc34fc9a78ddaa8c0815af114"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/posts/2026/06/CVE-2026-40455"
    },
    {
      "type": "WEB",
      "url": "https://lms.org.pl"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-40457 (GCVE-0-2026-40457)

Vulnerability from cvelistv5 – Published: 2026-06-18 10:58 – Updated: 2026-06-18 12:29 X_Open Source

Title

Reflected XSS in LMS

Summary

Severity

2.1 (Low)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Assigner

CERT-PL

References

3 references

URL	Tags
https://github.com/chilek/lms/commit/9c5651b39bfd…	patch
https://cert.pl/posts/2026/06/CVE-2026-40455	third-party-advisory
https://lms.org.pl/	product

Impacted products

1 product

Vendor	Product	Version
LMS	LMS	Affected: 0 , < 9c5651b (git)

Date Public

2026-06-18 10:58

Credits

Tymoteusz Dominik

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JSON

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  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-40457",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-18T12:29:01.396723Z",
                "version": "2.0.3"
              },
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "LMS",
          "repo": "https://github.com/chilek/lms",
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              "lessThan": "9c5651b",
              "status": "affected",
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            }
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            }
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            "Recovery": "NOT_DEFINED",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3VRH-XVG4-68RM

CVE-2026-40457 (GCVE-0-2026-40457)

Tags

Sightings

Nomenclature