Vulnerabilities in pkg:maven/org.apache.skywalking/server-core

PACKAGE
Advisory Identifier: GHSA-27h3-crw2-q36w
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Advisory Summary

CVE-2026-30778 is a HIGH (CVSS 7.5) skywalking oap /debugging/config/dump endpoint may vulnerability (CWE-202: Exposure of Sensitive Information Through Data Queries) affecting Server core libraries in the Maven ecosystem. The issue involves skywalking oap /debugging/config/dump endpoint may leak sensitive configuration information. Remediation is available by upgrading affected packages to version 10.4.0.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.apache.skywalking/server-core

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.apache.skywalking/server-core. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-27h3-crw2-q36w CVE-2026-30778 HIGH SkyWalking OAP /debugging/config/dump endpoint may leak sensitive configuration information

CVE-2026-30778 at a Glance

CVE Identifier CVE-2026-30778
GHSA Identifier GHSA-27h3-crw2-q36w
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-202: Exposure of Sensitive Information Through Data Queries
Affected Product Server core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

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

How to Fix CVE-2026-30778

To remediate this vulnerability, upgrade all affected Server core 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.apache.skywalking:server-core fixed: 10.4.0 
<dependency>
    <groupId>org.apache.skywalking</groupId>
    <artifactId>server-core</artifactId>
    <version>10.4.0</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.apache.skywalking

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-30778, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.skywalking

Analyze the terminal output to locate any version of Server core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 10.4.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.skywalking 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-202: Exposure of Sensitive Information Through Data Queries, where when trying to keep information confidential, an attacker can often infer some of the information by using statistics. In Server core, 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 SkyWalking OAP /debugging/config/dump endpoint may leak sensitive configuration information of MySQL/PostgreSQL. This issue affects Apache SkyWalking: from 9.7.0 through 10.3.0. Users are recommended to upgrade to version 10.4.0, which fixes the issue.

CVE-2026-30778 Affected Server core Versions

1 component(s)
Fixed Versions:
10.4.0
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.skywalking:server-core
maven/org.apache.skywalking/server-core
Maven
≥ 9.7.0
< 10.4.0
10.4.0

References

NVD — CVE-2026-30778 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-30778
Security Fix Commit FIX COMMIT
https://github.com/apache/skywalking/commit/5a3f6260e4dd681a9132204e5299064bef079886
Server core Source Repository REPOSITORY
https://github.com/apache/skywalking
lists.apache.org/thread/pvf35o3tp1rq... WEB
https://lists.apache.org/thread/pvf35o3tp1rqhmrhzj6fg31gvqrqcvn3
Server core Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/04/15/2

Frequently Asked Questions

What is CVE-2026-30778?
CVE-2026-30778 is a security vulnerability in Server core involving SkyWalking OAP /debugging/config/dump endpoint may leak sensitive configuration information under CWE-202: Exposure of Sensitive Information Through Data Queries.
Which Server core versions are affected?
Affected versions include releases prior to 10.4.0 across affected packages: org.apache.skywalking:server-core.
What version fixes CVE-2026-30778?
Upgrading to 10.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is server-core affected?
Yes, org.apache.skywalking:server-core is affected in releases prior to 10.4.0. Upgrade your dependency to 10.4.0 or later.
What is the CVSS score of CVE-2026-30778?
CVE-2026-30778 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-30778?
CVE-2026-30778 is classified under CWE-202: Exposure of Sensitive Information Through Data Queries (When trying to keep information confidential, an attacker can often infer some of the information by using statistics.).
How can I check Maven dependencies for CVE-2026-30778?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.skywalking'. 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-27h3-crw2-q36w",
  "modified" : "2026-04-16T22:57:31Z",
  "published" : "2026-04-16T15:31:31Z",
  "aliases" : [ "CVE-2026-30778" ],
  "summary" : "SkyWalking OAP /debugging/config/dump endpoint may leak sensitive configuration information",
  "details" : "The SkyWalking OAP /debugging/config/dump endpoint may leak sensitive configuration information of MySQL/PostgreSQL.\n\nThis issue affects Apache SkyWalking: from 9.7.0 through 10.3.0.\n\nUsers are recommended to upgrade to version 10.4.0, which fixes the issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.skywalking:server-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.7.0"
      }, {
        "fixed" : "10.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-30778"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/skywalking/commit/5a3f6260e4dd681a9132204e5299064bef079886"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/skywalking"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/pvf35o3tp1rqhmrhzj6fg31gvqrqcvn3"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/04/15/2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-202" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-16T22:57:31Z",
    "nvd_published_at" : "2026-04-15T11:16:33Z"
  }
}