CVE-2026-86511

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.70% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 52.7% of scored records. A rank, not a probability.

NVD base score

5.5 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-28.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-08 02:00Z1 MO AGO

Last updated

2026-09-08 12:34Z1 MO AGO

Reserved

2026-09-07

Assigning CNA

VulDB

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Weaknesses

• CWE-400Uncontrolled Resource ConsumptionClass
• CWE-404Improper Resource Shutdown or ReleaseClass

Data version

5.2

Document digest

7d3a1d5ed9bd1b2116aded85c231eb86d706e3225358c59debaefc8982350bca

• vuldb.comVDB-399664 | java-json-tools jackson-coreutils JacksonUtils.java BigDecimal.toPlainString resource consumptionhttps://vuldb.com/vuln/399664vdb-entrytechnical-description
• vuldb.comVDB-399664 | CTI Indicators (IOB, IOC, TTP, IOA)https://vuldb.com/vuln/399664/ctisignaturepermissions-required
• vuldb.comCVE-2026-86511 | CVE Analysis and Reporthttps://vuldb.com/cve/CVE-2026-86511third-party-advisory
• vuldb.comSubmit #908322 | java-json-tools jackson-coreutils 2.0 BigDecimal Amplification DoShttps://vuldb.com/submit/908322third-party-advisory
• github.comhttps://github.com/java-json-tools/jackson-coreutils/issues/65exploitissue-tracking
• github.comhttps://github.com/java-json-tools/jackson-coreutils/product