java-json-tools jackson-coreutils 2.0 JacksonUtils.java BigDecimal.toPlainString resource consumption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.8$0-$5k1.11

Summaryinfo

A vulnerability was found in java-json-tools jackson-coreutils 2.0. It has been declared as problematic. Affected by this issue is the function BigDecimal.toPlainString of the file src/main/java/com/github/fge/jackson/JacksonUtils.java. Executing a manipulation can lead to resource consumption. The identification of this vulnerability is CVE-2026-86511. The attack may be launched remotely. Furthermore, there is an exploit available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability classified as problematic was found in java-json-tools jackson-coreutils 2.0. This vulnerability affects the function BigDecimal.toPlainString of the file src/main/java/com/github/fge/jackson/JacksonUtils.java. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-86511. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1499.

It is possible to download the exploit at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/07/2026 Advisory disclosed
09/07/2026 +0 days VulDB entry created
09/07/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 65
Status: Not defined

CVE: CVE-2026-86511 (🔒)
GCVE (CVE): GCVE-0-2026-86511
GCVE (VulDB): GCVE-100-399664
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/07/2026 20:59
Changes: 09/07/2026 20:59 (58)
Complete: 🔍
Submitter: York Shen - Yong Shen - PayPal Cyber Security Team
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #908322: java-json-tools jackson-coreutils 2.0 BigDecimal Amplification DoS (by York Shen - Yong Shen - PayPal Cyber Security Team)

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!