CVE-2026-54514: CWE-918: Server-Side Request Forgery (SSRF) in FasterXML jackson-databind
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.0.0 until 2.18.8, 2.21.4, and 3.1.4, 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. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4.
AI Analysis
Technical Summary
The jackson-databind library's JDKFromStringDeserializer class constructed InetSocketAddress instances using new InetSocketAddress(host, port), which performs immediate DNS resolution during JSON deserialization. This behavior affects versions from 2.0.0 until fixed in 2.18.8, 2.21.4, and 3.1.4. An attacker supplying malicious JSON with InetSocketAddress fields can trigger DNS queries during deserialization, potentially leading to SSRF attacks. The fix replaces this with InetSocketAddress.createUnresolved(host, port), deferring DNS resolution until an explicit connection attempt.
Potential Impact
An attacker can cause the application to perform DNS lookups controlled by attacker-supplied input during JSON deserialization, potentially leading to information disclosure or SSRF-related impacts. The CVSS score is 5.3 (medium severity), indicating limited confidentiality impact and no integrity or availability impact.
Mitigation Recommendations
Upgrade jackson-databind to version 2.18.8, 2.21.4, or 3.1.4 or later, where the vulnerability is fixed by deferring DNS resolution. No other official remediation or temporary fixes are indicated. Patch status is confirmed fixed in these versions.
CVE-2026-54514: CWE-918: Server-Side Request Forgery (SSRF) in FasterXML jackson-databind
Description
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.0.0 until 2.18.8, 2.21.4, and 3.1.4, 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. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4.
CVSS v3.1
Score 5.3medium
Affected software
pkg:maven/com.fasterxml.jackson.core/jackson-databindRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The jackson-databind library's JDKFromStringDeserializer class constructed InetSocketAddress instances using new InetSocketAddress(host, port), which performs immediate DNS resolution during JSON deserialization. This behavior affects versions from 2.0.0 until fixed in 2.18.8, 2.21.4, and 3.1.4. An attacker supplying malicious JSON with InetSocketAddress fields can trigger DNS queries during deserialization, potentially leading to SSRF attacks. The fix replaces this with InetSocketAddress.createUnresolved(host, port), deferring DNS resolution until an explicit connection attempt.
Potential Impact
An attacker can cause the application to perform DNS lookups controlled by attacker-supplied input during JSON deserialization, potentially leading to information disclosure or SSRF-related impacts. The CVSS score is 5.3 (medium severity), indicating limited confidentiality impact and no integrity or availability impact.
Mitigation Recommendations
Upgrade jackson-databind to version 2.18.8, 2.21.4, or 3.1.4 or later, where the vulnerability is fixed by deferring DNS resolution. No other official remediation or temporary fixes are indicated. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-15T18:01:15.514Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3af602eed863c81e9ec635
Added to database: 06/23/2026, 21:09:22 UTC
Last enriched: 06/30/2026, 23:11:22 UTC
Last updated: 08/07/2026, 12:41:12 UTC
Views: 111
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