CVE-2026-34181: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-4jgc-cj59-f9mm
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CVSS 7.4
CWE-354
Published
Advisory Summary

CVE-2026-34181 is a HIGH (CVSS 7.4) security vulnerability vulnerability (CWE-354: Improper Validation of Integrity Check Value) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not validate or incorrectly validates the integrity check values or "checksums" of a message. this may prevent it from detecting if the data has been modified or corrupted in transmission.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-34181 at a Glance

CVE Identifier CVE-2026-34181
GHSA Identifier GHSA-4jgc-cj59-f9mm
Severity HIGH
CVSS v3.1 Base Score 7.4
CWE Classification CWE-354: Improper Validation of Integrity Check Value
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.4

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:N).

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 None (A:N)

How to Fix CVE-2026-34181

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-2026-34181, 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-354: Improper Validation of Integrity Check Value, where the product does not validate or incorrectly validates the integrity check values or "checksums" of a message. this may prevent it from detecting if the data has been modified or corrupted in transmission. 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: The PKCS#12 file processing fails to perform sufficient input validation for files that use Password-Based Message Authentication Code 1 (PBMAC1) integrity mechanism allowing a certificate and private key forgery. Impact Summary: An attacker impersonating a user can cause a service reading PKCS#12 files to accept forged certificates and private keys with a 1 in 256 probability. If a service accepting PKCS#12 files is using passwords for authenticating the received files, the attacker can create unencrypted PKCS#12 files that use PBMAC1 authentication that specifies an HMAC key of only one byte, allowing them to craft a file that will be accepted with a 1 in 256 probability. That would then cause the service to accept a certificate and private key controlled by the attacker. The FIPS modules are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

References

NVD — CVE-2026-34181 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-34181
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/0300eb9ddce7a0895bf301a4b0c03a9da2313a0f
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/79eb76a937e474bb7610a0a3dc57131dc8dc6610
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/85dcbb3abaa4878af5c8fbbe11bce708fcf984a7
Security Fix Commit FIX COMMIT
https://github.com/openssl/openssl/commit/ec36f2417c4ddd8cabce4b4a60a3d7a7365f2d81
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/0300eb9ddce7a0895bf301a4b0c03a9da2313a0f
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/79eb76a937e474bb7610a0a3dc57131dc8dc6610
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/85dcbb3abaa4878af5c8fbbe11bce708fcf984a7
Security Fix Commit FIX COMMIT
https://github.com/openssl/security/commit/ec36f2417c4ddd8cabce4b4a60a3d7a7365f2d81
openssl-library.org/news/secadv/2026060... WEB
https://openssl-library.org/news/secadv/20260609.txt

Frequently Asked Questions

What is CVE-2026-34181?
CVE-2026-34181 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-354: Improper Validation of Integrity Check Value.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-34181?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-34181?
CVE-2026-34181 has a CVSS v3.1 base score of 7.4 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-34181?
CVE-2026-34181 is classified under CWE-354: Improper Validation of Integrity Check Value (The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.).
How can I check Maven dependencies for CVE-2026-34181?
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 
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  "schema_version" : "1.4.0",
  "id" : "GHSA-4jgc-cj59-f9mm",
  "modified" : "2026-06-10T18:31:40Z",
  "published" : "2026-06-09T18:30:42Z",
  "aliases" : [ "CVE-2026-34181" ],
  "details" : "Issue Summary: The PKCS#12 file processing fails to perform sufficient input\nvalidation for files that use Password-Based Message Authentication Code 1\n(PBMAC1) integrity mechanism allowing a certificate and private key forgery.\n\nImpact Summary: An attacker impersonating a user can cause a service reading\nPKCS#12 files to accept forged certificates and private keys with a 1 in 256\nprobability.\n\nIf a service accepting PKCS#12 files is using passwords for authenticating\nthe received files, the attacker can create unencrypted PKCS#12 files that\nuse PBMAC1 authentication that specifies an HMAC key of only one byte, allowing\nthem to craft a file that will be accepted with a 1 in 256 probability.\nThat would then cause the service to accept a certificate and private key\ncontrolled by the attacker.\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:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ ],
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  }, {
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    "url" : "https://github.com/openssl/openssl/commit/0300eb9ddce7a0895bf301a4b0c03a9da2313a0f"
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    "type" : "WEB",
    "url" : "https://github.com/openssl/openssl/commit/79eb76a937e474bb7610a0a3dc57131dc8dc6610"
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    "type" : "WEB",
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  }, {
    "type" : "WEB",
    "url" : "https://openssl-library.org/news/secadv/20260609.txt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-354" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-09T17:17:04Z"
  }
}