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CVE-2026-55579— Pheditor: Hardcoded default password 'admin' with no forced change enables full application compromise

CVSS 9.8 · Critical EPSS 0.60% · P46

Affected Version Matrix 1

VendorProductVersion RangeStatus
pheditorpheditor>= 2.0.1, < 2.0.6affected
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I. Basic Information for CVE-2026-55579

Vulnerability Information
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Vulnerability Title
Pheditor: Hardcoded default password 'admin' with no forced change enables full application compromise
Source: CVE Program / CVE List V5
Vulnerability Description
Pheditor is a single-file editor and file manager written in PHP. From version 2.0.1 to before version 2.0.6, Pheditor ships with a hardcoded default password admin (SHA-512 hash stored at pheditor.php:11). There is no mechanism to force a password change on first login. Any deployment using the default credentials grants an attacker full access to the file editor, file upload, and terminal features, enabling arbitrary file read/write and remote code execution. This issue has been patched in version 2.0.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的凭证
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
pheditorpheditor >= 2.0.1, < 2.0.6 -

II. Public POCs for CVE-2026-55579

#POC DescriptionSource LinkShenlong Link
AI-Generated POCVerified env Premium
Qwen3.6-35B-A3B · 6697 chars
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III. Intelligence Information for CVE-2026-55579

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Vendor Advisories for CVE-2026-55579 (1)

Vendor Pages for CVE-2026-55579 (1)

Same Patch Batch · pheditor · 2026-07-27 · 4 CVEs total

CVE-2026-480309.9 CRITICALPheditor: OS Command Injection in terminal handler via unsanitized 'dir' parameter (CWE-78
CVE-2026-545408.8 HIGHAuthenticated terminal command whitelist bypass in Pheditor
CVE-2026-555788.8 HIGHPheditor: Incomplete command sanitization in terminal feature allows RCE via pipe operator

IV. Related Vulnerabilities

Same product: pheditor
Same vendor: pheditor
Same weakness: CWE-798

V. Comments for CVE-2026-55579

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