CVE-2026-35188: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-vc8w-w49c-4jgj
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CVSS 5.0
CWE-415
Published
Advisory Summary

CVE-2026-35188 is a MODERATE (CVSS 5.0) security vulnerability vulnerability (CWE-415: Double Free) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product calls free() twice on the same memory address.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-35188 at a Glance

CVE Identifier CVE-2026-35188
GHSA Identifier GHSA-vc8w-w49c-4jgj
Severity MODERATE
CVSS v3.1 Base Score 5.0
CWE Classification CWE-415: Double Free
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.0

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

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

How to Fix CVE-2026-35188

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

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

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-35188, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

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

Note: The mvn dependency:tree 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-415: Double Free, where the product calls free() twice on the same memory address. In Software, 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

Issue summary: A malicious server can exploit TLS OCSP stapling by delivering a crafted response through the status_request extension, triggering a double-free in the client's certificate verification path. Impact summary: Successful exploitation allows an attacker to corrupt heap memory via a double-free, potentially leading to a Denial of Service or possibly an attacker controlled code execution or other undefined behavior. If OCSP stapling is enabled and the TLS client connects to a malicious server, a crafted OCSP stapled response can trigger a double free in the TLS client when the stapled response is checked. The OCSP stapling is not enabled by default. Reliable code execution through a double-free is technically complex and highly environment-dependent but the Denial of Service impact is straightforward to achieve, warranting Moderate severity. No FIPS modules are affected by this issue as the affected code is outside the OpenSSL FIPS module boundary.

References

NVD — CVE-2026-35188 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-35188
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/131145d25659e8749a9ed1afb383484854cffb78
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/78d0154cffda03aaaac63a087cc523a6b35fa8fd
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/131145d25659e8749a9ed1afb383484854cffb78
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/78d0154cffda03aaaac63a087cc523a6b35fa8fd
openssl-library.org/news/secadv/2026060... WEB
https://openssl-library.org/news/secadv/20260609.txt

Frequently Asked Questions

What is CVE-2026-35188?
CVE-2026-35188 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-415: Double Free.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-35188?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-35188?
CVE-2026-35188 has a CVSS v3.1 base score of 5.0 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.
What CWE is associated with CVE-2026-35188?
CVE-2026-35188 is classified under CWE-415: Double Free (The product calls free() twice on the same memory address.).
How can I check Maven dependencies for CVE-2026-35188?
Run the dependency tree command: 'mvn dependency:tree'. 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-vc8w-w49c-4jgj",
  "modified" : "2026-06-11T00:32:04Z",
  "published" : "2026-06-09T18:30:41Z",
  "aliases" : [ "CVE-2026-35188" ],
  "details" : "Issue summary: A malicious server can exploit TLS OCSP stapling by delivering\na crafted response through the status_request extension, triggering a\ndouble-free in the client's certificate verification path.\n\nImpact summary: Successful exploitation allows an attacker to corrupt heap\nmemory via a double-free, potentially leading to a Denial of Service or\npossibly an attacker controlled code execution or other undefined behavior.\n\nIf OCSP stapling is enabled and the TLS client connects to a malicious server,\na crafted OCSP stapled response can trigger a double free in the TLS client\nwhen the stapled response is checked.\n\nThe OCSP stapling is not enabled by default. Reliable code execution\nthrough a double-free is technically complex and highly environment-dependent\nbut the Denial of Service impact is straightforward to achieve, warranting\nModerate severity.\n\nNo FIPS modules are affected by this issue as the affected code is outside\nthe OpenSSL FIPS module boundary.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-35188"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/openssl/commit/131145d25659e8749a9ed1afb383484854cffb78"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/openssl/commit/78d0154cffda03aaaac63a087cc523a6b35fa8fd"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/security/commit/131145d25659e8749a9ed1afb383484854cffb78"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/security/commit/78d0154cffda03aaaac63a087cc523a6b35fa8fd"
  }, {
    "type" : "WEB",
    "url" : "https://openssl-library.org/news/secadv/20260609.txt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-415" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-09T17:17:05Z"
  }
}