Server-side Request Forgery (SSRF) Affecting tools.jackson.core:jackson-databind package, versions [3.0.0, 3.1.5)[3.2.0, 3.2.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-TOOLSJACKSONCORE-19256876
- published25 Aug 2026
- disclosed24 Aug 2026
- creditTa Duc Thien
Introduced: 24 Aug 2026
NewCVE-2026-77310 (opens in a new tab)How to fix?
Upgrade tools.jackson.core:jackson-databind to version 3.1.5, 3.2.1 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) through the STD_INET_ADDRESS branch in FromStringDeserializer in src/main/java/com/fasterxml/jackson/databind/deser/std/FromStringDeserializer.java. An attacker can trigger outbound DNS lookups and blind SSRF behavior by supplying a hostname string in JSON that is deserialized into java.net.InetAddress. When application code binds untrusted input into an InetAddress field or type, the deserializer calls InetAddress.getByName(value) on the attacker-controlled string and resolves it before any application validation runs. This lets an attacker force DNS-based callbacks or probe internal hostnames, causing unwanted network egress and leaking resolver-visible information.