SB2026092348 - Multiple vulnerabilities in jackson-core

Description

This security bulletin contains information about 2 vulnerabilities.

1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2026-89425)

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

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 cause a denial of service.

The vulnerability exists due to allocation of resources without limits or throttling in UTF8DataInputJsonParser._reportInvalidToken() when processing malformed JSON tokens through a DataInput-backed parser. A remote attacker can supply a malformed token to cause a denial of service.

2) Inefficient regular expression complexity (CVE-ID: CVE-2026-89407)

CWE-ID: CWE-1333 - Inefficient Regular Expression Complexity

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 cause a denial of service.

The vulnerability exists due to inefficient regular expression complexity in the NumberInput.PATTERN_FLOAT regular expression when processing attacker-controlled numeric-looking strings through looksLikeValidNumber(). A remote attacker can submit a crafted numeric-looking string to cause a denial of service.

Applications that coerce String-typed JSON fields to numbers can invoke the affected validation path.

Remediation

Install update from vendor's website.

References

• https://github.com/FasterXML/jackson-core/security/advisories/GHSA-7hhh-6rmp-j9qf
• https://github.com/FasterXML/jackson-core/security/advisories/GHSA-p6pp-m3f8-5c89