CVE-2026-54514: jackson-databind InetSocketAddress Deserialization Triggers Eager DNS Vulnerability
MODERATECVE-2026-54514 is a MODERATE (CVSS 5.3) inetsocketaddress deserialization triggers eager dns vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting jackson-databind libraries in the Maven ecosystem. The issue involves inetsocketaddress deserialization triggers eager dns resolution (ssrf). Remediation is available by upgrading affected packages to version 2.18.8, 2.21.4, 3.1.4.
CVE-2026-54514 at a Glance
Security Impact
CVSS: 5.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).
How to Fix CVE-2026-54514
To remediate this vulnerability, upgrade all affected jackson-databind dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.18.8</version>
</dependency><dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.21.4</version>
</dependency><dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>3.1.4</version>
</dependency><dependency>
<groupId>tools.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.21.4</version>
</dependency><dependency>
<groupId>tools.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>3.1.4</version>
</dependency>Run the following command in your project directory to verify that all resolved dependencies use the patched release:
mvn dependency:tree -Dincludes=com.fasterxml.jackson.coreHow to Check if You Are Affected
To determine whether your Java application is affected by CVE-2026-54514, inspect your build dependencies using the Maven Dependency Plugin:
mvn dependency:tree -Dincludes=com.fasterxml.jackson.coreAnalyze the terminal output to locate any version of jackson-databind in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.18.8), your application is affected.
Note: The mvn dependency:tree -Dincludes=com.fasterxml.jackson.core command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In jackson-databind, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-54514 Affected jackson-databind Versions
5 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
com.fasterxml.jackson.core:jackson-databind
|
Maven |
≥ 2.0.0
< 2.18.8
|
2.18.8
|
|
com.fasterxml.jackson.core:jackson-databind
|
Maven |
≥ 2.19.0
< 2.21.4
|
2.21.4
|
|
com.fasterxml.jackson.core:jackson-databind
|
Maven |
≥ 3.0.0
< 3.1.4
|
3.1.4
|
|
tools.jackson.core:jackson-databind
|
Maven |
≥ 2.19.0
< 2.21.4
|
2.21.4
|
|
tools.jackson.core:jackson-databind
|
Maven |
≥ 3.0.0
< 3.1.4
|
3.1.4
|
References
Frequently Asked Questions
What is CVE-2026-54514?
Which jackson-databind versions are affected?
What version fixes CVE-2026-54514?
Is jackson-databind affected?
What is the CVSS score of CVE-2026-54514?
What CWE is associated with CVE-2026-54514?
How can I check Maven dependencies for CVE-2026-54514?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-hgj6-7826-r7m5",
"modified" : "2026-07-20T21:21:18Z",
"published" : "2026-06-23T21:22:54Z",
"aliases" : [ "CVE-2026-54514" ],
"summary" : "jackson-databind: InetSocketAddress deserialization triggers eager DNS resolution (SSRF)",
"details" : "## Summary\n`JDKFromStringDeserializer` constructed `InetSocketAddress` with `new InetSocketAddress(host, port)`, which performs eager DNS name resolution for hostname inputs at deserialization time. An application that binds untrusted JSON into a type containing an `InetSocketAddress` field issues an attacker-chosen DNS query during `readValue`, before any application-level validation or connect logic. The fix uses `InetSocketAddress.createUnresolved(host, port)`, deferring DNS to an explicit connect.\n\n## Impact\nAn attacker controlling JSON deserialized into an `InetSocketAddress`-bearing type can force outbound DNS lookups for attacker-chosen hostnames at deserialization time (SSRF / DNS-based out-of-band interaction / internal-resolver probing), purely from binding.\n\n## Affected / Patched (verified via `git tag --contains` on `1f5a103`)\n- 2.18 line: `>= 2.18.0, < 2.18.8` -> fixed in **2.18.8**\n- 2.19-2.21 line: `>= 2.19.0, < 2.21.4` -> fixed in **2.21.4**\n- 3.x line: `>= 3.0.0, < 3.1.4` -> fixed in **3.1.4**\n\n## Severity / CWE\nMaintainer: minor. Reporter: LOW. CWE-918 (SSRF).\n\n## Upstream fix\nFasterXML/jackson-databind#5951 (\"Improve InetSocketAddress deserialization\"). Released 2026-06-04 in 2.18.8 / 2.21.4 / 3.1.4.\n\n## Credits\nOmkhar Arasaratnam (@omkhar) - finder.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Maven",
"name" : "com.fasterxml.jackson.core:jackson-databind"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.0.0"
}, {
"fixed" : "2.18.8"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "com.fasterxml.jackson.core:jackson-databind"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.19.0"
}, {
"fixed" : "2.21.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "com.fasterxml.jackson.core:jackson-databind"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.0.0"
}, {
"fixed" : "3.1.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "tools.jackson.core:jackson-databind"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "2.19.0"
}, {
"fixed" : "2.21.4"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Maven",
"name" : "tools.jackson.core:jackson-databind"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "3.0.0"
}, {
"fixed" : "3.1.4"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-databind/security/advisories/GHSA-hgj6-7826-r7m5"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-54514"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-databind/pull/5951"
}, {
"type" : "WEB",
"url" : "https://github.com/FasterXML/jackson-databind/commit/1f5a1037b1e9e05920e755cb35f198bcd46667e4"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/FasterXML/jackson-databind"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-918" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-06-23T21:22:54Z",
"nvd_published_at" : "2026-06-23T21:17:02Z"
}
}