Open Redirect Vulnerability in kalcaddle kodbox 1.67 Build 02
CVE-2026-18721

5.3MEDIUM

Key Information:

Vendor

Kalcaddle

Status
Kodbox
Vendor
CVE Published:
4 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18721?

A security flaw has been detected in kalcaddle kodbox version 1.67 Build 02 involving the SSO API Login component. The vulnerability allows remote attackers to manipulate the 'callbackUrl' parameter within the '/user/sso/apiLogin' endpoint, leading to potential open redirect scenarios. This issue has been publicly disclosed, and the vendor has not responded to notifications regarding this security concern. It is essential for users of this product to be aware of this vulnerability and take necessary precautions.

Affected Version(s)

kodbox 1.67 Build 02

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-2026-18721 - Proof of Concept

References

https://vuldb.com/vuln/385632
vdb-entrytechnical-description
https://vuldb.com/vuln/385632/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18721
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

lihongming (VulDB User)
VulDB CNA Team
.