CVE-2026-54540 | Pheditor is a single-file editor and file manager written in… | CVSS 8.8 HIGH

Description

Pheditor is a single-file editor and file manager written in PHP. Prior to version 2.0.5, there is an authenticated terminal command whitelist bypass. The terminal feature checks whether the submitted command starts with one of the configured TERMINAL_COMMANDS values, then passes the full command string to shell_exec(). Shell command substitution such as $() is not blocked, so an authenticated user with the terminal permission can bypass a restricted command allowlist and execute arbitrary shell commands as the web server user. This issue has been patched in version 2.0.5.

Metadata

CVE ID: CVE-2026-54540
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-15 19:04 UTC
Published: 2026-07-27 17:53 UTC
Last updated: 2026-07-27 18:36 UTC
Primary CWE: CWE-78
CWE-78: Improper Neutralization of Special Elements used in …
Vendor / Product: pheditor / pheditor
Sources: cve.org · NVD

Severity & Metrics

8.8 HIGH CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
pheditor	pheditor	—	< 2.0.5

Weakness (CWE)

CWE	Source	Description
CWE-78	cna	CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.8	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References (2)

https://github.com/pheditor/pheditor/security/advisories/GHSA-9643-6xjp-vx57 https://github.com/pheditor/pheditor/security/advisories/GHSA-9643-6xjp-vx57
https://github.com/pheditor/pheditor/releases/tag/2.0.5 https://github.com/pheditor/pheditor/releases/tag/2.0.5