TI-2024-17226 Aliases CVE-2024-26135 GHSA-cp68-qrhr-g9h8

MeshCentral cross-site websocket hijacking (CSWSH) vulnerability

MEDIUM 40CWE-346Published 2024-02-20 · Updated 2025-04-22

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-346.

Summary

MeshCentral is a full computer management web site. Versions prior to 1.1.21 a cross-site websocket hijacking (CSWSH) vulnerability within the control.ashx endpoint. This component is the primary mechanism used within MeshCentral to perform administrative actions on the server. The vulnerability is exploitable when an attacker is able to convince a victim end-user to click on a malicious link to a page hosting an attacker-controlled site. The attacker can then originate a cross-site websocket connection using client-side JavaScript code to connect to `control.ashx` as the victim user within MeshCentral. Version 1.1.21 contains a patch for this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0046 40th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed MeshCentral (Ylianst): 1.1.21meshcentral (npm): 1.1.21

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Ylianst	MeshCentral	before 1.1.21	1.1.21	Patch available	CNA
—	meshcentral (npm)	before 1.1.21	1.1.21	Patch available	GHSA-cp68-qrhr-g9h8

MeshCentral VendorYlianst Affected before 1.1.21 Fixed in 1.1.21 Patch available CNA
meshcentral (npm) Vendor— Affected before 1.1.21 Fixed in 1.1.21 Patch available GHSA-cp68-qrhr-g9h8

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:meshcentral:meshcentral::::::::	before 1.1.21	Vulnerable	Meshcentral

cpe:2.3:a:meshcentral:meshcentral:*:*:*:*:*:*:*:* Versions before 1.1.21 Vulnerable ·Meshcentral

Remediation

Fix · CNA MeshCentral (Ylianst) Fixed in 1.1.21
Fix · GHSA-cp68-qrhr-g9h8 meshcentral (npm) Fixed in 1.1.21 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2024-26135
2026-10-03 Alias added: GHSA-cp68-qrhr-g9h8

References

TI-2026-47176 MeshCentral Cross-Site WebSocket Hijacking via Origin Validation Bypass on Self-Signed Certificate Deployments CVSS 4.0HIGH 8.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences