CVE-2026-42769: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-rpj2-p5pj-r33v
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CVSS 5.3
CWE-295
Published
Advisory Summary

CVE-2026-42769 is a MODERATE (CVSS 5.3) security vulnerability vulnerability (CWE-295: Improper Certificate Validation) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not validate, or incorrectly validates, a certificate.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-42769 at a Glance

CVE Identifier CVE-2026-42769
GHSA Identifier GHSA-rpj2-p5pj-r33v
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-295: Improper Certificate Validation
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:H/I:N/A:N).

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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-42769

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-2026-42769, 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-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. 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: An error in the callback used to verify the certificate provided in a Root CA key update Certificate Management Protocol (CMP) message response rendered the certificate validation ineffectual, which could lead to escalation of credentials from the Registration Authority (RA) level to the root Certification Authority (root CA) level. Impact Summary: The Registration Autority could replace the root CA certificate for the CMP clients with an arbitrary root CA certificate. One of the parts of the Certificate Management Protocol (CMP), specified in RFC 9810, is Root Certification Authority (root CA) key Rollover, which is sent by the server in a message with type 'id-it-rootCaKeyUpdate'. As part of these messages, 'newWithOld' certificate, the new root CA certificate signed with the old root CA key, is provided, and verifying its signature is crucial for transferring the trust from the old CA key to the new one. The 'id-it-rootCaKeyUpdate' messages are expected to be processed with OSSL_CMP_get1_rootCaKeyUpdate(), that is expected to verify the 'newWithOld' certificate. A typo in the certificate chain building code led to adding an incorrect certificate ('newWithOld' instead of 'oldRoot') to the certificate chain, rendering the certificate verification process ineffectual (only the issuer name and the algorithm OIDs were verified by other parts of the verification code). An attacker who already has credentials that satisfy the CMP message protection checks can generate a new key pair and use a crafted self-signed certificate in its 'id-it-rootCaKeyUpdate' CMP messages which affected CMP clients would accept as a new trust anchor. Significant preconditions for the attack (having valid RA-level credentials) are the reason the issue was assigned Low severity. The FIPS modules are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

References

NVD — CVE-2026-42769 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42769
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/54d0989997e5fc26057009a9782c3441ce3842fb
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/777b363b16fcf2153bb3ded39dc3838713667c44
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/d35cd473a271bf3ce7bf3d32af53217fb83ae92c
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/d531f21c0fe99067a66fc0ff1161ef127f9cd70b
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/54d0989997e5fc26057009a9782c3441ce3842fb
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/777b363b16fcf2153bb3ded39dc3838713667c44
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/d35cd473a271bf3ce7bf3d32af53217fb83ae92c
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/d531f21c0fe99067a66fc0ff1161ef127f9cd70b
openssl-library.org/news/secadv/2026060... WEB
https://openssl-library.org/news/secadv/20260609.txt

Frequently Asked Questions

What is CVE-2026-42769?
CVE-2026-42769 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-295: Improper Certificate Validation.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-42769?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-42769?
CVE-2026-42769 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-42769?
CVE-2026-42769 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).
How can I check Maven dependencies for CVE-2026-42769?
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-rpj2-p5pj-r33v",
  "modified" : "2026-06-10T09:31:57Z",
  "published" : "2026-06-09T18:30:43Z",
  "aliases" : [ "CVE-2026-42769" ],
  "details" : "Issue Summary: An error in the callback used to verify the certificate\nprovided in a Root CA key update Certificate Management Protocol (CMP)\nmessage response rendered the certificate validation ineffectual, which\ncould lead to escalation of credentials from the Registration Authority (RA)\nlevel to the root Certification Authority (root CA) level.\n\nImpact Summary: The Registration Autority could replace the root CA\ncertificate for the CMP clients with an arbitrary root CA certificate.\n\nOne of the parts of the Certificate Management Protocol (CMP), specified in\nRFC 9810, is Root Certification Authority (root CA) key Rollover,\nwhich is sent by the server in a message with type 'id-it-rootCaKeyUpdate'.\nAs part of these messages, 'newWithOld' certificate, the new root CA\ncertificate signed with the old root CA key, is provided, and verifying its\nsignature is crucial for transferring the trust from the old CA key to the\nnew one.\n\nThe 'id-it-rootCaKeyUpdate' messages are expected to be processed with\nOSSL_CMP_get1_rootCaKeyUpdate(), that is expected to verify the 'newWithOld'\ncertificate.  A typo in the certificate chain building code led to adding\nan incorrect certificate ('newWithOld' instead of 'oldRoot') to the\ncertificate chain, rendering the certificate verification process ineffectual\n(only the issuer name and the algorithm OIDs were verified by other parts\nof the verification code).\n\nAn attacker who already has credentials that satisfy the CMP message\nprotection checks can generate a new key pair and use a crafted self-signed\ncertificate in its 'id-it-rootCaKeyUpdate' CMP messages which affected CMP\nclients would accept as a new trust anchor.\n\nSignificant preconditions for the attack (having valid RA-level credentials)\nare the reason the issue was assigned Low severity.\n\nThe FIPS modules are not affected by this issue, as the affected code is\noutside the OpenSSL FIPS module boundary.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-42769"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/openssl/commit/54d0989997e5fc26057009a9782c3441ce3842fb"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/openssl/commit/777b363b16fcf2153bb3ded39dc3838713667c44"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/openssl/commit/d35cd473a271bf3ce7bf3d32af53217fb83ae92c"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/openssl/commit/d531f21c0fe99067a66fc0ff1161ef127f9cd70b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/security/commit/54d0989997e5fc26057009a9782c3441ce3842fb"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/security/commit/777b363b16fcf2153bb3ded39dc3838713667c44"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/security/commit/d35cd473a271bf3ce7bf3d32af53217fb83ae92c"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openssl/security/commit/d531f21c0fe99067a66fc0ff1161ef127f9cd70b"
  }, {
    "type" : "WEB",
    "url" : "https://openssl-library.org/news/secadv/20260609.txt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-295" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-09T17:17:08Z"
  }
}