SB2026082435 - Multiple vulnerabilities in jackson-databind

Description

This security bulletin contains information about 2 vulnerabilities.

1) Unsafe reflection (CVE-ID: N/A)

CWE-ID: CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to use of externally controlled input to select classes or code in JDKFromStringDeserializer.NioPathHelper.deserialize when deserializing untrusted JSON into a java.nio.file.Path field. A remote attacker can supply a specially crafted URI scheme to drive FileSystemProvider resolution and cause a denial of service.

Exploitation occurs during readValue, and meaningful side effects beyond the reported availability impact depend on the presence of a side-effecting third-party FileSystemProvider on the classpath.

2) Resource exhaustion (CVE-ID: CVE-2026-68497)

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 cause a denial of service.

The vulnerability exists due to uncontrolled resource consumption in CoreXMLDeserializers when deserializing JSON string values into javax.xml.datatype.Duration or javax.xml.datatype.XMLGregorianCalendar fields. A remote attacker can send a specially crafted request to cause a denial of service.

The issue is reachable with the default mapper configuration and does not require polymorphic typing or special configuration.

Remediation

Install update from vendor's website.

References

• https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-wjgm-6hv5-3cvf
• https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-q4xh-88c3-wmh7