Resource exhaustion in Java-Json-Tools Jackson-Coreutils
CVE-2026-86511
A vulnerability was found in java-json-tools jackson-coreutils 2.0. Affected by this vulnerability is the function BigDecimal.toPlainString of the file src/main/java/com/github/fge/jackson/JacksonUtils.java. Performing a manipulation results in resource consumption. The attack may be initiated remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (52.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Java-Json-Tools Jackson-Coreutils — versions 2.0
Weakness classification (CWE)
References
- vuldb.com/vuln/399664 (technical-description, vdb-entry)
- vuldb.com/vuln/399664/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-86511 (third-party-advisory)
- vuldb.com/submit/908322 (third-party-advisory)
- github.com/java-json-tools/jackson-coreutils/issues/65 (issue-tracking, exploit)
- github.com/java-json-tools/jackson-coreutils/ (product)
Frequently asked questions
- What is CVE-2026-86511?
- CVE-2026-86511 is a medium-severity vulnerability in Java-Json-Tools Jackson-Coreutils, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2026-09-08.
- How severe is CVE-2026-86511?
- Medium severity. CVSS v3 base score is 5.3 out of 10.