Deserialization Vulnerability in OpenBankProject OBP-API by OpenBankProject
CVE-2026-91842

2.1LOW

Key Information:

Vendor

Openbankproject

Status
Obp-api
Vendor
CVE Published:
15 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-91842?

A vulnerability exists in the OpenBankProject OBP-API, specifically within the KryoHandler component, where improper handling of deserialization processes allows for potential remote exploitation. This issue is particularly concerning due to the function KryoInjection.invert located in the Redis.scala file, which can be manipulated by an attacker. While the complexity of executing the attack is deemed high, the potential for exploitation remains a significant threat as this vulnerability has been made public and may be actively targeted.

Affected Version(s)

OBP-API 1.10.0

OBP-API 1.10.1

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-2026-91842 - Proof of Concept

References

https://vuldb.com/vuln/404073
vdb-entrytechnical-description
https://vuldb.com/vuln/404073/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-91842
third-party-advisory

CVSS V4

Score:
2.1
Severity:
LOW
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ZAST.AI (VulDB User)
VulDB CNA Team
.