Resource Allocation Vulnerability in Jackson CoreUtils by java-json-tools
CVE-2026-86513

6.9MEDIUM

Key Information:

Vendor

Java-json-tools

Status
Jackson-coreutils
Vendor
CVE Published:
8 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-86513?

A security flaw has been identified in the JSON Pointer parser of jackson-coreutils version 2.0, specifically within the TreePointer.tokensFromInput function. This vulnerability allows for remote execution of attacks that exploit improper resource allocation. The issue was reported to the project maintainers early on, but it remains unaddressed. The public has access to the exploit, raising potential risks for users of this component.

Affected Version(s)

jackson-coreutils 2.0

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-2026-86513 - Proof of Concept

References

https://vuldb.com/vuln/399667
vdb-entrytechnical-description
https://vuldb.com/vuln/399667/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86513
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
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

York Shen - Yong Shen - PayPal Cyber Security Team (VulDB User)
VulDB CNA Team
.