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TI-2026-28883 Aliases CVE-2026-40040GHSA-m96c-c5gp-88rx

Pachno 1.0.6 Unrestricted File Upload Remote Code Execution

Priority MEDIUM 40CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

Pachno 1.0.6 contains an unrestricted file upload vulnerability that allows authenticated users to upload arbitrary file types by bypassing ineffective extension filtering to the /uploadfile endpoint. Attackers can upload executable files .php5 scripts to web-accessible directories and execute them to achieve remote code execution on the server.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00474 41st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
PachnoPachno1.0.6—No fix listedCNA
  • Pachno VendorPachno Affected 1.0.6 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-40040
  2. 2026-10-03 Alias added: GHSA-m96c-c5gp-88rx
  3. 2026-10-25 EPSS moved to the below the 50th percentile

References

Advisory 1

  • TI-2026-28887 Pachno 1.0.6 FileCache Deserialization Remote Code Execution CVSS 4.0CRITICAL 9.3
  • TI-2026-28885 Pachno 1.0.6 Wiki TextParser XML External Entity Injection CVSS 4.0CRITICAL 9.3
  • TI-2026-28882 Pachno 1.0.6 Open Redirection via return_to Parameter CVSS 4.0HIGH 7.1
  • TI-2023-25648 A vulnerability has been identified in Pachno 1.0.6 allowing an authenticated attacker to… CVSS 3.1MEDIUM 5.4
  • TI-2026-28884 Pachno 1.0.6 Cross-Site Request Forgery via State-Changing Endpoints CVSS 4.0MEDIUM 5.3
  • TI-2026-28881 Pachno 1.0.6 Stored Cross-Site Scripting via Multiple Parameters CVSS 4.0MEDIUM 5.1

Sources

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