CVE-2026-54513
HighCVSS 8.1Exploitation Probability (EPSS)
Elevated risk57th percentile - higher than 57% of all known CVEs
Summary
Jackson-databind from 2.10.0 to 2.18.8, 2.21.4, and 3.1.4 has a vulnerability in BasicPolymorphicTypeValidator where allowIfSubTypeIsArray() allows any array type without validating the element type. This bypasses the allowlist and allows deserialization of dangerous types like EvilType[].
Risk Assessment
Risk is remote code execution via deserialization of dangerous array types, potentially leading to application compromise.
Recommendation
Upgrade jackson-databind to version 2.18.8, 2.21.4, or 3.1.4, which include the fix.
Other vulnerabilities in jackson-databind
See all- CVE-2021-20190High
A flaw in jackson-databind before 2.9.10.7 mishandles the interaction between serialization gadgets and typing. The highest threat is to data confidentiality, integrity, and system availability.
- CVE-2026-77310Medium
jackson-databind, 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, has a vulnerability in the java.net.InetAddress branch of FromStringDeserializer.Std._deserialize(). It 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.
- CVE-2026-59889Medium
In jackson-databind, the UnwrappedPropertyHandler.processUnwrapped() method replays buffered JSON for a @JsonUnwrapped property without a prop.visibleInView() guard, allowing a property annotated with both @JsonView and @JsonUnwrapped to be written from attacker JSON under a less-privileged active view.
- CVE-2026-59888Medium
A vulnerability in jackson-databind allows bypassing @JsonIgnore in Java Records using PropertyNamingStrategy. Affected versions from 2.15.0 to 2.18.8, 2.21.4, and 3.1.4 register the ignored field under its original name before applying the naming strategy, enabling the renamed JSON key to be assigned to the Record constructor parameter.
- CVE-2026-54515Medium
In jackson-databind from version 2.8.0 to 2.18.9, 2.21.5, and 3.1.4, a vulnerability exists where per-property @JsonIgnoreProperties exclusions are applied by removing ignored properties from BeanPropertyMap, but subsequent case-insensitivity processing (ACCEPT_CASE_INSENSITIVE_PROPERTIES) rebuilds the map from the original unfiltered source, restoring the removed properties. The ignored property becomes writable again.
- CVE-2026-54514Medium
Vulnerability in jackson-databind from version 2.0.0 to 2.18.8, 2.21.4, and 3.1.4 causes immediate DNS resolution for untrusted input during deserialization of InetSocketAddress. An attacker can force a DNS query to a chosen host before any application-level validation.
- CVE-2023-35116Medium
Jackson-databind through 2.15.2 allows attackers to cause a denial of service or other unspecified impact via a crafted object that uses cyclic dependencies.
Original NVD description (English source)
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.10.0 until 2.18.8, 2.21.4, and 3.1.4, BasicPolymorphicTypeValidator.Builder.allowIfSubTypeIsArray() allowlists any array type based only on clazz.isArray(), without validating the array's component (element) type against the configured allowlist. A PTV built with allowIfSubTypeIsArray() plus an explicit concrete-type allowlist therefore still permits EvilType[] even though EvilType is not allowlisted. When Jackson deserializes the elements and no per-element type IDs are present, it instantiates the component type directly with no further PTV check, bypassing the allowlist. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4.