CVE-2022-25647: Gson Deserialization Of Untrusted Data Vulnerability

HIGH
Advisory Identifier: GHSA-4jrv-ppp4-jm57
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CVSS 7.7
CWE-502
Published
Advisory Summary

CVE-2022-25647 is a HIGH (CVSS 7.7) deserialization of untrusted data vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Gson libraries in the Maven ecosystem. The issue involves deserialization of untrusted data in gson. Remediation is available by upgrading affected packages to version 2.8.9.

CVE-2022-25647 at a Glance

CVE Identifier CVE-2022-25647
GHSA Identifier GHSA-4jrv-ppp4-jm57
Severity HIGH
CVSS v3.1 Base Score 7.7
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Gson
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.7

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:L/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 Low (C:L)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-25647

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

com.google.code.gson:gson fixed: 2.8.9 
<dependency>
    <groupId>com.google.code.gson</groupId>
    <artifactId>gson</artifactId>
    <version>2.8.9</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=com.google.code.gson

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-25647, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.google.code.gson

Analyze the terminal output to locate any version of Gson in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.8.9), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.google.code.gson 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 Gson, 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

The package `com.google.code.gson:gson` before 2.8.9 is vulnerable to Deserialization of Untrusted Data via the `writeReplace()` method in internal classes, which may lead to denial of service attacks.

CVE-2022-25647 Affected Gson Versions

1 component(s)
Fixed Versions:
2.8.9
Product / Package Ecosystem Affected Versions Fixed Version
com.google.code.gson:gson
maven/com.google.code.gson/gson
Maven
< 2.8.9
2.8.9

References

NVD — CVE-2022-25647 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-25647
Gson Source Repository REPOSITORY
https://github.com/google/gson/pull/1991
Gson Source Repository REPOSITORY
https://github.com/google/gson/pull/1991/commits
Gson Source Repository REPOSITORY
https://github.com/google/gson
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2022/05/msg00015.html
lists.debian.org/debian-lts-announce... WEB
https://lists.debian.org/debian-lts-announce/2022/09/msg00009.html
Gson Security Information SECURITY
https://security.netapp.com/advisory/ntap-20220901-0009
snyk.io/vuln/snyk-java-comg... WEB
https://snyk.io/vuln/SNYK-JAVA-COMGOOGLECODEGSON-1730327
Gson Security Information SECURITY
https://www.debian.org/security/2022/dsa-5227
Gson Security Information SECURITY
https://www.oracle.com/security-alerts/cpujul2022.html

Frequently Asked Questions

What is CVE-2022-25647?
CVE-2022-25647 is a security vulnerability in Gson involving Deserialization of Untrusted Data in Gson under CWE-502: Deserialization of Untrusted Data.
Which Gson versions are affected?
Affected versions include releases prior to 2.8.9 across affected packages: com.google.code.gson:gson.
What version fixes CVE-2022-25647?
Upgrading to 2.8.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is gson affected?
Yes, com.google.code.gson:gson is affected in releases prior to 2.8.9. Upgrade your dependency to 2.8.9 or later.
What is the CVSS score of CVE-2022-25647?
CVE-2022-25647 has a CVSS v3.1 base score of 7.7 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H.
What CWE is associated with CVE-2022-25647?
CVE-2022-25647 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-2022-25647?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.google.code.gson'. 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-4jrv-ppp4-jm57",
  "modified" : "2026-06-08T23:20:01Z",
  "published" : "2022-05-03T00:00:44Z",
  "aliases" : [ "CVE-2022-25647" ],
  "summary" : "Deserialization of Untrusted Data in Gson",
  "details" : "The package `com.google.code.gson:gson` before 2.8.9 is vulnerable to Deserialization of Untrusted Data via the `writeReplace()` method in internal classes, which may lead to denial of service attacks.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.google.code.gson:gson"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.8.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-25647"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/google/gson/pull/1991"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/google/gson/pull/1991/commits"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/google/gson"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2022/05/msg00015.html"
  }, {
    "type" : "WEB",
    "url" : "https://lists.debian.org/debian-lts-announce/2022/09/msg00009.html"
  }, {
    "type" : "WEB",
    "url" : "https://security.netapp.com/advisory/ntap-20220901-0009"
  }, {
    "type" : "WEB",
    "url" : "https://snyk.io/vuln/SNYK-JAVA-COMGOOGLECODEGSON-1730327"
  }, {
    "type" : "WEB",
    "url" : "https://www.debian.org/security/2022/dsa-5227"
  }, {
    "type" : "WEB",
    "url" : "https://www.oracle.com/security-alerts/cpujul2022.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-05-20T20:31:08Z",
    "nvd_published_at" : "2022-05-01T16:15:00Z"
  }
}