CVE-2026-86318
java-json-tools json-patch JsonMergePatchDeserializer.java JsonMergePatch.fromJson stack-based overflow
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th
A flaw has been found in java-json-tools json-patch up to 1.13. Affected is the function JsonMergePatch.fromJson of the file JsonMergePatchDeserializer.java. Executing a manipulation can lead to stack-based buffer overflow. The attack may be performed from remote. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.
| CWE | CWE-121 CWE-119 |
| Vendor | java-json-tools |
| Product | json-patch |
| Published | Sep 7, 2026 |
| Last Updated | Sep 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for java-json-tools json-patch
Be the first to know when new medium vulnerabilities affecting java-json-tools json-patch are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
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 Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
java-json-tools / json-patch
1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13
References
vuldb.com: https://vuldb.com/vuln/399509 vuldb.com: https://vuldb.com/vuln/399509/cti vuldb.com: https://vuldb.com/cve/CVE-2026-86318 vuldb.com: https://vuldb.com/submit/908319 github.com: https://github.com/java-json-tools/json-patch/issues/168 github.com: https://github.com/java-json-tools/json-patch/
Credits
🔍 York Shen - Yong Shen - PayPal Cyber Security Team (VulDB User) VulDB CNA Team