CVE-2026-82430: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-pjcp-2m43-fmv9
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CVSS 7.8
CWE-367
Published
Advisory Summary

CVE-2026-82430 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-82430 at a Glance

CVE Identifier CVE-2026-82430
GHSA Identifier GHSA-pjcp-2m43-fmv9
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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

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

How to Fix CVE-2026-82430

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-2026-82430, 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-367: Time-of-check Time-of-use (TOCTOU) Race Condition, where the product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. 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

Description When launching a Docker or OCI worker, the setuid-root `worker-launcher` first changes ownership of the entire worker directory to the untrusted topology user, and only afterwards reads and acts on the command file that the supervisor wrote into that same directory. The file is opened without `O_NOFOLLOW` and without re-verifying its owner, so between the ownership change and the read the tenant can replace its contents. For the Docker path the parsed command is executed with real uid 0, and the command sanitiser is not a privilege boundary: it admits `-v` with an arbitrary source, `--device`, `--cap-add`, `--security-opt`, `--user` and `--net`, and copies positional arguments through verbatim. A rewritten file therefore yields an attacker-authored, root-equivalent container invocation with the host filesystem available. For the OCI path the same rewrite window applies, and mount validation is structural only, with no source or destination allow-list, so arbitrary host paths can be bind-mounted read-write into the container. The `username` field of the command file is likewise attacker-settable and is checked only against non-root and minimum-uid rules, permitting execution as another tenant's uid. Mitigation Upgrade to 3.1.0, where the command file is validated before the ownership change and re-verified on open, and where mount sources and destinations are constrained by configuration. Users who cannot upgrade immediately should disable Docker and OCI worker isolation, or restrict topology submission on affected supervisors to trusted principals. Note that the launcher must be rebuilt and reinstalled after upgrading. Credit The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.

References

NVD — CVE-2026-82430 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82430
lists.apache.org/thread/8d5pkn486p8v... WEB
https://lists.apache.org/thread/8d5pkn486p8vrz5klg6onk5r8k9sd9lv
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/09/13/10

Frequently Asked Questions

What is CVE-2026-82430?
CVE-2026-82430 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-82430?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-82430?
CVE-2026-82430 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-82430?
CVE-2026-82430 is classified under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition (The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.).
How can I check Maven dependencies for CVE-2026-82430?
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-pjcp-2m43-fmv9",
  "modified" : "2026-09-14T21:31:39Z",
  "published" : "2026-09-14T15:32:49Z",
  "aliases" : [ "CVE-2026-82430" ],
  "details" : "Description\n\nWhen launching a Docker or OCI worker, the setuid-root `worker-launcher` first changes ownership of the\nentire worker directory to the untrusted topology user, and only afterwards reads and acts on the command\nfile that the supervisor wrote into that same directory. The file is opened without `O_NOFOLLOW` and without\nre-verifying its owner, so between the ownership change and the read the tenant can replace its contents.\n\nFor the Docker path the parsed command is executed with real uid 0, and the command sanitiser is not a\nprivilege boundary: it admits `-v` with an arbitrary source, `--device`, `--cap-add`, `--security-opt`,\n`--user` and `--net`, and copies positional arguments through verbatim. A rewritten file therefore yields an\nattacker-authored, root-equivalent container invocation with the host filesystem available.\n\nFor the OCI path the same rewrite window applies, and mount validation is structural only, with no\nsource or destination allow-list, so arbitrary host paths can be bind-mounted read-write into the\ncontainer. The `username` field of the command file is likewise attacker-settable and is checked only\nagainst non-root and minimum-uid rules, permitting execution as another tenant's uid.\n\nMitigation\n\nUpgrade to 3.1.0, where the command file is validated before the ownership change and re-verified on open,\nand where mount sources and destinations are constrained by configuration.\n\nUsers who cannot upgrade immediately should disable Docker and OCI worker isolation, or restrict topology\nsubmission on affected supervisors to trusted principals. Note that the launcher must be rebuilt and\nreinstalled after upgrading.\n\nCredit\n\nThe ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-82430"
  }, {
    "type" : "WEB",
    "url" : "https://lists.apache.org/thread/8d5pkn486p8vrz5klg6onk5r8k9sd9lv"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/09/13/10"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-367" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-14T15:17:09Z"
  }
}