What is GHSA-rqj9-6qp6-c345?

GHSA-rqj9-6qp6-c345 is a security advisory published by GitHub Security Advisories with Critical severity. The Advance Guest Post WordPress plugin through 1.9 does not properly validate uploaded files,...

Which CVE IDs does GHSA-rqj9-6qp6-c345 cover?

GHSA-rqj9-6qp6-c345 covers the following CVE IDs: CVE-2026-118063. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-rqj9-6qp6-c345?

GHSA-rqj9-6qp6-c345 has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-rqj9-6qp6-c345CriticalCVSS 9.8

The Advance Guest Post WordPress plugin through 1.9 does not properly validate uploaded files,...

Vendor

GitHub Security Advisories

Published

November 13, 2026

Last Modified

November 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-118063 →

📋 Description

The Advance Guest Post WordPress plugin through 1.9 does not properly validate uploaded files, relying on a case-sensitive and incomplete extension check that unauthenticated users can trivially bypass, allowing them to upload arbitrary files, including executable PHP variants, into a web-reachable directory, which can lead to remote code execution depending on the server configuration.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-118063
https://wpscan.com/vulnerability/45ea832a-9ed9-4f75-bc84-1b09794d362a
https://github.com/advisories/GHSA-rqj9-6qp6-c345