CVE-2026-77310
Published:August 24, 2026
Updated:August 29, 2026
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. Prior to versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1 on their respective release lines, the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize() calls InetAddress.getByName() on attacker-controlled input, causing eager DNS resolution during deserialization and enabling DNS-based server-side request forgery and internal-host enumeration. This issue is fixed in versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1.
Affected Packages
tools.jackson.core:jackson-databind (JAVA):
Affected version(s) =3.2.0 <3.2.1Fix Suggestion:
Update to version 3.2.1com.fasterxml.jackson.core:jackson-databind (JAVA):
Affected version(s) >=2.19.0 <2.21.5Fix Suggestion:
Update to version 2.21.5com.fasterxml.jackson.core:jackson-databind (JAVA):
Affected version(s) >=2.0.0 <2.18.9Fix Suggestion:
Update to version 2.18.9com.fasterxml.jackson.core:jackson-databind (JAVA):
Affected version(s) =2.22.0 <2.22.1Fix Suggestion:
Update to version 2.22.1tools.jackson.core:jackson-databind (JAVA):
Affected version(s) >=3.0.0 <3.1.5Fix Suggestion:
Update to version 3.1.5Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Server-Side Request Forgery (SSRF)
EPSS
Base Score:
0.19