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TI-2026-40118 Aliases CVE-2026-55579GHSA-p4h7-p9rj-2pq2

Pheditor: Hardcoded default password 'admin' with no forced change enables full application compromise

Priority HIGH 82CWE-798Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-798.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00792 56th percentileScored 2026-11-07
Fix Fixed pheditor (pheditor): 2.0.6pheditor/pheditor (Packagist): 2.0.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
pheditorpheditor2.0.1 to before 2.0.62.0.6Patch availableCNA
—pheditor/pheditor (Packagist)2.0.1 to before 2.0.62.0.6Patch availableGHSA-p4h7-p9rj-2pq2
  • pheditor Vendorpheditor Affected 2.0.1 to before 2.0.6 Fixed in 2.0.6 Patch available CNA
  • pheditor/pheditor (Packagist) Vendor— Affected 2.0.1 to before 2.0.6 Fixed in 2.0.6 Patch available GHSA-p4h7-p9rj-2pq2

Remediation

  • Fix · CNA pheditor (pheditor) Fixed in 2.0.6
  • Fix · GHSA-p4h7-p9rj-2pq2 pheditor/pheditor (Packagist) Fixed in 2.0.6 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55579
  2. 2026-10-03 Alias added: GHSA-p4h7-p9rj-2pq2

References

Other 3

  • TI-2026-35473 Pheditor: OS Command Injection in terminal handler via unsanitized 'dir' parameter (CWE-78) CVSS 3.1CRITICAL 9.9
  • TI-2026-39379 Authenticated terminal command whitelist bypass in Pheditor CVSS 3.1HIGH 8.8
  • TI-2026-40117 OS command injection in pheditor CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences