Deserialization of Untrusted Data Affecting org.springframework:spring-web package, versions [5.3.0,6.0.0)[6.1.0-M1,6.2.19)[7.0.0-M1,7.0.8)
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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- published27 Jul 2026
- disclosed8 Jun 2026
- creditwo1enca1ca1
Introduced: 8 Jun 2026
CVE-2026-41855 (opens in a new tab)How to fix?
Upgrade org.springframework:spring-web to version 6.0.0, 6.2.19, 7.0.8 or higher.
Overview
org.springframework:spring-web is a package that provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.
Affected versions of this package are vulnerable to Deserialization of Untrusted Data.
via deserialization in MappingJackson2MessageConverter and JacksonJsonMessageConverter within an untrusted JMS environment. An attacker can instantiate arbitrary classes by supplying crafted JMS messages that influence the target type during JSON deserialization. This may lead to unauthorized actions or code execution through exploitation of deserialization gadget chains available on the application's classpath.