Buffer overflow in jackson-core - CVE-2026-29062

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Main Vulnerability Database Vulnerabilities #VU123491

Buffer overflow in jackson-core - CVE-2026-29062

Published: March 4, 2026


Vulnerability identifier: #VU123491
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-29062
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary error in UTF8DataInputJsonParser when parsing deeply nested JSON files. A remote attacker can pass a specially JSON data to the application and perform a denial of service attack.

Note, the vulnerability exists due to the fix for #VU112106 (CVE-2025-52999) has not been properly applied for the 3.x branch. 


Affected software

jackson-core
Confluence Data Center
Jira Software Data Center
Jira Service Management Data Center
Bamboo Data Center
IBM Automation Decision Services

How to mitigate CVE-2026-29062

Install updates from vendor's website.

jackson-core - update to 3.1.0
Confluence Data Center - update to 10.2.11
Jira Software Data Center - update to 11.3.5
Jira Service Management Data Center - update to 11.3.5
Bamboo Data Center - update to 12.1.7
IBM Automation Decision Services - addressed in versions 24.0.0.0.9, 24.0.1.0.8, 25.0.0.0.4

External References

Related Security Bulletins