Vulnerabilities in pkg:maven/org.springframework.pulsar/spring-pulsar

PACKAGE
Advisory Identifier: GHSA-gg69-9wwp-6jx2
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Advisory Summary

CVE-2026-41732 is a HIGH (CVSS 8.1) jsonpulsarheadermapper trusted-package prefix check allows vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Spring for Apache Pulsar libraries in the Maven ecosystem. The issue involves jsonpulsarheadermapper trusted-package prefix check allows unintended subpackage deserialization. Remediation is available by upgrading affected packages to version 2.0.6, 1.2.18.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.springframework.pulsar/spring-pulsar

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.springframework.pulsar/spring-pulsar. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-gg69-9wwp-6jx2 CVE-2026-41732 HIGH Spring for Apache Pulsar: JsonPulsarHeaderMapper Trusted-Package Prefix Check Allows Unintended Subpackage Deserialization

CVE-2026-41732 at a Glance

CVE Identifier CVE-2026-41732
GHSA Identifier GHSA-gg69-9wwp-6jx2
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Spring for Apache Pulsar
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-41732

To remediate this vulnerability, upgrade all affected Spring for Apache Pulsar dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.springframework.pulsar:spring-pulsar fixed: 2.0.6 
<dependency>
    <groupId>org.springframework.pulsar</groupId>
    <artifactId>spring-pulsar</artifactId>
    <version>2.0.6</version>
</dependency>
org.springframework.pulsar:spring-pulsar fixed: 1.2.18 
<dependency>
    <groupId>org.springframework.pulsar</groupId>
    <artifactId>spring-pulsar</artifactId>
    <version>1.2.18</version>
</dependency>
org.springframework.pulsar:spring-pulsar fixed: Latest secure release 
<dependency>
    <groupId>org.springframework.pulsar</groupId>
    <artifactId>spring-pulsar</artifactId>
    <version>Latest secure release</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.springframework.pulsar

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-41732, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.springframework.pulsar

Analyze the terminal output to locate any version of Spring for Apache Pulsar in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.0.6), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.springframework.pulsar command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Spring for Apache Pulsar, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

JsonPulsarHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Additionally, an empty trusted-packages configuration fell back to trusting all packages rather than applying a safe default allow-list. Affected versions: Spring for Apache Pulsar 2.0.0 through 2.0.5; 1.2.0 through 1.2.17; 1.1.0 through 1.1.17.

CVE-2026-41732 Affected Spring for Apache Pulsar Versions

3 component(s)
Fixed Versions:
2.0.61.2.18
Product / Package Ecosystem Affected Versions Fixed Version
org.springframework.pulsar:spring-pulsar
maven/org.springframework.pulsar/spring-pulsar
Maven
≥ 2.0.0
< 2.0.6
2.0.6
org.springframework.pulsar:spring-pulsar
maven/org.springframework.pulsar/spring-pulsar
Maven
≥ 1.2.0
< 1.2.18
1.2.18
org.springframework.pulsar:spring-pulsar
maven/org.springframework.pulsar/spring-pulsar
Maven
≤ 1.1.17

References

NVD — CVE-2026-41732 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-41732
Spring for Apache Pulsar Source Repository REPOSITORY
https://github.com/spring-projects/spring-pulsar
Spring for Apache Pulsar Release RELEASE
https://github.com/spring-projects/spring-pulsar/releases/tag/v1.2.18
Spring for Apache Pulsar Release RELEASE
https://github.com/spring-projects/spring-pulsar/releases/tag/v2.0.6
Spring for Apache Pulsar Security Information SECURITY
https://spring.io/security/cve-2026-41732

Frequently Asked Questions

What is CVE-2026-41732?
CVE-2026-41732 is a security vulnerability in Spring for Apache Pulsar involving JsonPulsarHeaderMapper Trusted-Package Prefix Check Allows Unintended Subpackage Deserialization under CWE-502: Deserialization of Untrusted Data.
Which Spring for Apache Pulsar versions are affected?
Affected versions include releases prior to 2.0.6, 1.2.18 across affected packages: org.springframework.pulsar:spring-pulsar.
What version fixes CVE-2026-41732?
Upgrading to 2.0.6, 1.2.18 (or the latest patched release for your respective branch) resolves the vulnerability.
Is spring-pulsar affected?
Yes, org.springframework.pulsar:spring-pulsar is affected in releases prior to 2.0.6, 1.2.18, Latest secure release. Upgrade your dependency to 2.0.6, 1.2.18, Latest secure release or later.
What is the CVSS score of CVE-2026-41732?
CVE-2026-41732 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-41732?
CVE-2026-41732 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Maven dependencies for CVE-2026-41732?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.springframework.pulsar'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gg69-9wwp-6jx2",
  "modified" : "2026-08-12T17:40:21Z",
  "published" : "2026-06-10T00:31:52Z",
  "aliases" : [ "CVE-2026-41732" ],
  "summary" : "Spring for Apache Pulsar: JsonPulsarHeaderMapper Trusted-Package Prefix Check Allows Unintended Subpackage Deserialization",
  "details" : "JsonPulsarHeaderMapper matched type headers against trusted packages using a prefix check, meaning that trusting any package implicitly trusted all of its subpackages. Additionally, an empty trusted-packages configuration fell back to trusting all packages rather than applying a safe default allow-list.\n\nAffected versions:\nSpring for Apache Pulsar 2.0.0 through 2.0.5; 1.2.0 through 1.2.17; 1.1.0 through 1.1.17.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.pulsar:spring-pulsar"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.0.0"
      }, {
        "fixed" : "2.0.6"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.0.5"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.pulsar:spring-pulsar"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.2.0"
      }, {
        "fixed" : "1.2.18"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.2.17"
    }
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.springframework.pulsar:spring-pulsar"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.1.17"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-41732"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/spring-projects/spring-pulsar"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spring-projects/spring-pulsar/releases/tag/v1.2.18"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/spring-projects/spring-pulsar/releases/tag/v2.0.6"
  }, {
    "type" : "WEB",
    "url" : "https://spring.io/security/cve-2026-41732"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-12T17:40:21Z",
    "nvd_published_at" : "2026-06-10T00:16:52Z"
  }
}