What is GHSA-wfq6-vqf6-g78h?

GHSA-wfq6-vqf6-g78h is a security advisory published by GitHub Security Advisories with Critical severity. Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a...

Which CVE IDs does GHSA-wfq6-vqf6-g78h cover?

GHSA-wfq6-vqf6-g78h covers the following CVE IDs: CVE-2026-89040. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-wfq6-vqf6-g78h?

GHSA-wfq6-vqf6-g78h has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-wfq6-vqf6-g78hCriticalCVSS 9.8

Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a...

Vendor

GitHub Security Advisories

Published

September 15, 2026

Last Modified

September 15, 2026

🔗 CVE IDs covered (1)

CVE-2026-89040 →

📋 Description

Tencent Mass Service Engine in Cluster (MSEC) allows a remote, unauthenticated attacker to send a crafted POST request including ../ and gain root access on the target device. An attacker who uploads a webshell can execute arbitrary code as root.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-89040
https://github.com/Tencent/MSEC
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-258-02.json
https://www.cve.org/CVERecord?id=CVE-2026-89040
https://github.com/advisories/GHSA-wfq6-vqf6-g78h