Vulnerability · Published Sep 7, 2026 · Assigned by VulDB
CVE-2026-86321java-json-tools jackson-coreutils URL Validation JsonLoader.java JsonLoader.fromURL server-side request forgery
Medium 5.3
In plain English
A medium-severity server-side request forgery in jackson-coreutils from java-json-tools. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities).
Official description
A vulnerability was found in java-json-tools jackson-coreutils 2.0. Affected by this issue is the function JsonLoader.fromURL of the file src/main/java/com/github/fge/jackson/JsonLoader.java of the component URL Validation. The manipulation results in server-side request forgery. It is possible to launch the attack 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| java-json-tools | jackson-coreutils | 2.0 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
References
- VDB-399511 | java-json-tools jackson-coreutils URL Validation JsonLoader.java JsonLoader.fromURL server-side request forgery vdb-entry, technical-description
- VDB-399511 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-86321 | CVE Analysis and Report third-party-advisory
- Submit #908323 | java-json-tools jackson-coreutils 2.0 SSRF + BigDecimal Amplification Remote DoS third-party-advisory
- https://github.com/java-json-tools/jackson-coreutils/issues/64 exploit, issue-tracking
- https://github.com/java-json-tools/jackson-coreutils/ product