SB2026091108 - IBM System Storage Virtualization Engine TS7700 update for jackson-core
Published: September 11, 2026
Security Bulletin ID
SB2026091108
CSH 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 vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2026-18401)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: 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]
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.