Path Traversal Vulnerability in danpros HTMLy Affecting Author Name Handler
CVE-2026-18646

6.9MEDIUM

Key Information:

Vendor

Danpros

Status
Htmly
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18646?

A path traversal vulnerability has been discovered in the danpros HTMLy application up to version 3.1.1, specifically impacting the Author Name Handler component. This flaw resides within the /system/htmly.php file, allowing an attacker to manipulate the 'Name' argument to conduct unauthorized requests. Such exploitation can result in access to sensitive files outside of the intended directory structure, thereby posing a significant security risk. The vulnerability is also exploitable remotely and the necessary exploit techniques are publicly available. Despite early notification, the vendor has not issued a response regarding this issue.

Affected Version(s)

HTMLy 3.1.0

HTMLy 3.1.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18646 - Proof of Concept

References

https://vuldb.com/vuln/385565
vdb-entrytechnical-description
https://vuldb.com/vuln/385565/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18646
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

orionyan (VulDB User)
VulDB CNA Team
.