JWT Token Handler Vulnerability in zhistaredu StarTraining Software
CVE-2026-97877

6.9MEDIUM

Key Information:

Vendor

Zhistaredu

Status
Startraining
Vendor
CVE Published:
25 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-97877?

A vulnerability has been identified in the zhistaredu StarTraining software, specifically in the JWT Token Handler component. The issue arises from the UserLoginService.createToken function in application.yml, which leads to the use of hard-coded passwords due to improper handling of user_id and company_id parameters. This manipulation enables attackers to exploit the system remotely, potentially compromising user authentication processes. Despite the public disclosure of this exploit, the vendor did not respond to early notifications regarding this vulnerability.

Affected Version(s)

StarTraining 3.8.0

StarTraining 3.8.1

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-2026-97877 - Proof of Concept

References

https://vuldb.com/vuln/409898
vdb-entrytechnical-description
https://vuldb.com/vuln/409898/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-97877
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

Vseen (VulDB User)
VulDB CNA Team
.