SB2026022701 - Denial of srevice in FasterXML jackson-core
Published: February 27, 2026
Security Bulletin ID
SB2026022701
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource exhaustion (CVE-ID: N/A)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the non-blocking (async) JSON parser in jackson-core bypasses the maxNumberLength constraint (default: 1000 characters) defined in StreamReadConstraints. A remote attacker can send JSON with arbitrarily long numbers through the async parser API and exhaust CPU resources, leading to a denial of service condition.
Remediation
Install update from vendor's website.