Deserialization of Untrusted Data Affecting org.springframework.pulsar:spring-pulsar package, versions [, 1.2.18)[2.0.0-M1, 2.0.6)
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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- published11 Jun 2026
- disclosed9 Jun 2026
- creditUnknown
Introduced: 9 Jun 2026
CVE-2026-41732 (opens in a new tab)How to fix?
Upgrade org.springframework.pulsar:spring-pulsar to version 1.2.18, 2.0.6 or higher.
Overview
org.springframework.pulsar:spring-pulsar is a Spring Pulsar Core
Affected versions of this package are vulnerable to Deserialization of Untrusted Data via trusted package validation in JsonPulsarHeaderMapper. An attacker can trigger deserialization of unintended classes by supplying crafted Pulsar message headers, as trusted package checks use a prefix match that implicitly trusts all subpackages and an empty trusted-packages configuration falls back to trusting all packages. This may allow deserialization of arbitrary JDK types whose constructors perform side effects such as allocating resources or creating threads, potentially leading to resource exhaustion or other unintended behavior.
Details
Serialization is a process of converting an object into a sequence of bytes which can be persisted to a disk or database or can be sent through streams. The reverse process of creating object from sequence of bytes is called deserialization. Serialization is commonly used for communication (sharing objects between multiple hosts) and persistence (store the object state in a file or a database). It is an integral part of popular protocols like Remote Method Invocation (RMI), Java Management Extension (JMX), Java Messaging System (JMS), Action Message Format (AMF), Java Server Faces (JSF) ViewState, etc.
Deserialization of untrusted data (CWE-502) is when the application deserializes untrusted data without sufficiently verifying that the resulting data will be valid, thus allowing the attacker to control the state or the flow of the execution.