Path Traversal Vulnerability in HerikLyma CPPWebFramework
CVE-2026-5638

6.9MEDIUM

Key Information:

Vendor

Heriklyma

Status
Cppwebframework
Vendor
CVE Published:
6 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5638?

A security flaw has been identified in the HerikLyma CPPWebFramework version 3.1 and below, which permits path traversal. This vulnerability enables attackers to manipulate file paths, potentially leading to unauthorized access to sensitive files outside the intended directory structure. The problem was highlighted through an issue report, but as of now, there has been no response from the developers. Given that the exploit has been made public, users of affected versions must take immediate steps to secure their applications.

Affected Version(s)

CPPWebFramework 3.0

CPPWebFramework 3.1

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-2026-5638 - Proof of Concept

References

https://vuldb.com/vuln/355426
vdb-entry
https://vuldb.com/vuln/355426/cti
signaturepermissions-required
https://vuldb.com/submit/785952
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

Matan Sandori
MatanS (VulDB User)
MatanS (VulDB User)
VulDB CNA Team
.