CVE-2026-77310: CWE-918: Server-Side Request Forgery (SSRF) in FasterXML com.fasterxml.jackson.core:jackson-databind
A Server-Side Request Forgery (SSRF) vulnerability exists in jackson-databind prior to versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1. The vulnerability arises from the deserialization process where attacker-controlled input triggers DNS resolution via java.net.InetAddress.getByName(), enabling potential internal-host enumeration. This issue is fixed in the specified versions.
AI Analysis
Technical Summary
The jackson-databind library's deserialization logic in the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize() calls InetAddress.getByName() on attacker-controlled input before versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1. This causes eager DNS resolution during deserialization, leading to a Server-Side Request Forgery (SSRF) vulnerability classified as CWE-918. The vulnerability allows an attacker to induce the server to perform DNS lookups, potentially enabling DNS-based SSRF and internal network host enumeration. The issue is resolved in the listed fixed versions.
Potential Impact
An attacker can exploit this vulnerability to cause the server to perform DNS lookups on attacker-controlled hostnames during deserialization. This can lead to DNS-based SSRF attacks and internal host enumeration. The CVSS v3.1 score is 5.3 (medium severity), indicating limited confidentiality impact with no integrity or availability impact.
Mitigation Recommendations
Upgrade jackson-databind to one of the fixed versions: 2.18.9, 2.21.5, 2.22.1, 3.1.5, or 3.2.1. Patch status is confirmed fixed in these versions. No other mitigation is indicated by the vendor advisory.
CVE-2026-77310: CWE-918: Server-Side Request Forgery (SSRF) in FasterXML com.fasterxml.jackson.core:jackson-databind
Description
A Server-Side Request Forgery (SSRF) vulnerability exists in jackson-databind prior to versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1. The vulnerability arises from the deserialization process where attacker-controlled input triggers DNS resolution via java.net.InetAddress.getByName(), enabling potential internal-host enumeration. This issue is fixed in the specified versions.
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 deserialization logic in the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize() calls InetAddress.getByName() on attacker-controlled input before versions 2.18.9, 2.21.5, 2.22.1, 3.1.5, and 3.2.1. This causes eager DNS resolution during deserialization, leading to a Server-Side Request Forgery (SSRF) vulnerability classified as CWE-918. The vulnerability allows an attacker to induce the server to perform DNS lookups, potentially enabling DNS-based SSRF and internal network host enumeration. The issue is resolved in the listed fixed versions.
Potential Impact
An attacker can exploit this vulnerability to cause the server to perform DNS lookups on attacker-controlled hostnames during deserialization. This can lead to DNS-based SSRF attacks and internal host enumeration. The CVSS v3.1 score is 5.3 (medium severity), indicating limited confidentiality impact with no integrity or availability impact.
Mitigation Recommendations
Upgrade jackson-databind to one of the fixed versions: 2.18.9, 2.21.5, 2.22.1, 3.1.5, or 3.2.1. Patch status is confirmed fixed in these versions. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-08-20T19:17:14.376Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8c9d91acd9273b49093328
Added to database: 08/24/2026, 19:37:53 UTC
Last enriched: 08/24/2026, 19:52:13 UTC
Last updated: 08/24/2026, 20:38:57 UTC
Views: 5
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