Read the docs
TI-2026-18317 Aliases CVE-2026-22799

emlog Arbitrary File Upload Vulnerability

Priority HIGH 81CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
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

Emlog is an open source website building system. emlog v2.6.1 and earlier exposes a REST API endpoint (/index.php?rest-api=upload) for media file uploads. The endpoint fails to implement proper validation of file types, extensions, and content, allowing authenticated attackers (with a valid API key or admin session cookie) to upload arbitrary files (including malicious PHP scripts) to the server. An attacker can obtain the API key either by gaining administrator access to enable the REST API setting, or via information disclosure vulnerabilities in the application. Once uploaded, the malicious PHP file can be executed to gain remote code execution (RCE) on the target server, leading to full server compromise.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00745 55th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

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
emlogemlogup to 2.6.1—No fix listedCNA
  • emlog Vendoremlog Affected up to 2.6.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:*before 2.6.1Vulnerableemlog
  • cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:* Versions before 2.6.1 Vulnerable ·emlog

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-22799

References

Exploit 1

Patch 1

  • TI-2025-21066 An arbitrary file upload vulnerability in the component /views/plugin.php of emlog pro… CVSS 3.1CRITICAL 9.8
  • TI-2025-19139 An arbitrary file upload vulnerability in the component admin\plugin.php of Emlog Pro… CVSS 3.1CRITICAL 9.8
  • TI-2023-24041 An arbitrary file upload vulnerability in the component /admin/plugin.php of Emlog Pro… CVSS 3.1CRITICAL 9.8
  • TI-2023-23173 Deserialization of Untrusted Data in emlog pro v.2.1.15 and earlier allows a remote… CVSS 3.1CRITICAL 9.8
  • TI-2025-30252 Emlog Pro Contains a File Upload Vulnerability CVSS 4.0HIGH 8.9
  • TI-2025-30250 EMLOG SQL Injection Vulnerability CVSS 3.1HIGH 8.8
See all 92 →

Sources

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