SB2026090962 - Multiple vulnerabilities in BurgerEditor plugin

Description

This security bulletin contains information about 2 vulnerabilities.

1) Authorization bypass through user-controlled key (CVE-ID: CVE-2026-84062)

CWE-ID: CWE-639 - Authorization Bypass Through User-Controlled Key

CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to authorization bypass through user-controlled key. A remote user can alter content of the page.

2) Arbitrary file upload (CVE-ID: CVE-2026-84063)

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

CVSSv4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote administrator can upload a malicious file and execute it on the server.

Remediation

Install update from vendor's website.

References

• https://jvn.jp/en/jp/JVN21088484/index.html
• https://burger.d-zero.co.jp/blogs/archives/3