CVE-2026-63131: Github.com/openbao/openbao OpenBao Skips Stricter Deny Policy Vulnerability

Q: What is CVE-2026-63131?

CVE-2026-63131 is a security vulnerability in Github.com/openbao/openbao involving OpenBao Skips Stricter Deny Policy for LIST operations under CWE-863: Incorrect Authorization.

Q: Which Github.com/openbao/openbao versions are affected?

Affected versions include releases prior to 0.0.0-20260713133043-f58d848c139e across affected packages: github.com/openbao/openbao.

Q: What version fixes CVE-2026-63131?

Upgrading to 0.0.0-20260713133043-f58d848c139e (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is github.com/openbao/openbao affected?

Yes, github.com/openbao/openbao is affected in releases prior to 0.0.0-20260713133043-f58d848c139e, Latest secure release. Upgrade your dependency to 0.0.0-20260713133043-f58d848c139e, Latest secure release or later.

Q: What CWE is associated with CVE-2026-63131?

CVE-2026-63131 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).

Q: How can I check Go dependencies for CVE-2026-63131?

Run the dependency tree command: 'inspect dependencies for github.com/openbao/openbao'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

MODERATE

Advisory Identifier: GHSA-xp3c-3jw3-4vcr

CWE-863

Published 2026-09-22

Advisory Summary

CVE-2026-63131 is a MODERATE openbao skips stricter deny policy vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/openbao/openbao libraries in the Go ecosystem. The issue involves openbao skips stricter deny policy for list operations. Remediation is available by upgrading affected packages to version 0.0.0-20260713133043-f58d848c139e.

CVE-2026-63131 at a Glance

CVE Identifier CVE-2026-63131

GHSA Identifier GHSA-xp3c-3jw3-4vcr

Severity MODERATE

CVSS v3.1 Base Score N/A

CWE Classification CWE-863: Incorrect Authorization

Affected Product Github.com/openbao/openbao

Package Ecosystem Go

Published Date 2026-09-22

Last Updated 2026-09-22

How to Fix CVE-2026-63131

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

github.com/openbao/openbao fixed: 0.0.0-20260713133043-f58d848c139e

Upgrade github.com/openbao/openbao to 0.0.0-20260713133043-f58d848c139e

github.com/openbao/openbao fixed: Latest secure release

Upgrade github.com/openbao/openbao to Latest secure release

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for github.com/openbao/openbao

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-63131, inspect your project dependencies for Github.com/openbao/openbao:

inspect dependencies for github.com/openbao/openbao

Analyze the terminal output to locate any version of Github.com/openbao/openbao in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.0-20260713133043-f58d848c139e), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Github.com/openbao/openbao, 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

## Impact When a policy operator has written `capabilities = ["deny"]` on a path with a trailing wildcard but allowed a broader list operation (e.g., a `deny` on `secrets/metadata/restricted/*` but allowed `list` on `secrets/metadata/*`), OpenBao would incorrectly allow the operation. This did not impact other operation types. ## Patches This has been patched in OpenBao v2.6.0.

CVE-2026-63131 Affected Github.com/openbao/openbao Versions

2 component(s)

Fixed Versions:

0.0.0-20260713133043-f58d848c139e

Product / Package	Ecosystem	Affected Versions	Fixed Version
github.com/openbao/openbao golang/github.com/openbao/openbao	Go	< 0.0.0-20260713133043-f58d848c139e	0.0.0-20260713133043-f58d848c139e
github.com/openbao/openbao golang/github.com/openbao/openbao	Go	≥ 0.1.0 ≤ 1.1.5

References

GitHub Advisory / Wiki ADVISORY

https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr

Github.com/openbao/openbao Source Repository REPOSITORY

https://github.com/openbao/openbao/pull/3389

Github.com/openbao/openbao Source Repository REPOSITORY

https://github.com/openbao/openbao/pull/3474

Security Fix Commit FIX COMMIT

https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a

Security Fix Commit FIX COMMIT

https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc

Github.com/openbao/openbao Source Repository REPOSITORY

https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203

Github.com/openbao/openbao Source Repository REPOSITORY

https://github.com/openbao/openbao

Github.com/openbao/openbao Release RELEASE

https://github.com/openbao/openbao/releases/tag/v2.6.0

Frequently Asked Questions

What is CVE-2026-63131?

CVE-2026-63131 is a security vulnerability in Github.com/openbao/openbao involving OpenBao Skips Stricter Deny Policy for LIST operations under CWE-863: Incorrect Authorization.

Which Github.com/openbao/openbao versions are affected?

Affected versions include releases prior to 0.0.0-20260713133043-f58d848c139e across affected packages: github.com/openbao/openbao.

What version fixes CVE-2026-63131?

Upgrading to 0.0.0-20260713133043-f58d848c139e (or the latest patched release for your respective branch) resolves the vulnerability.

Is github.com/openbao/openbao affected?

Yes, github.com/openbao/openbao is affected in releases prior to 0.0.0-20260713133043-f58d848c139e, Latest secure release. Upgrade your dependency to 0.0.0-20260713133043-f58d848c139e, Latest secure release or later.

What CWE is associated with CVE-2026-63131?

CVE-2026-63131 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).

How can I check Go dependencies for CVE-2026-63131?

Run the dependency tree command: 'inspect dependencies for github.com/openbao/openbao'. 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-xp3c-3jw3-4vcr",
  "modified" : "2026-09-22T20:36:56Z",
  "published" : "2026-09-22T20:36:56Z",
  "aliases" : [ "CVE-2026-63131" ],
  "summary" : "OpenBao Skips Stricter Deny Policy for LIST operations",
  "details" : "## Impact\n\nWhen a policy operator has written `capabilities = [\"deny\"]` on a path with a trailing wildcard but allowed a broader list operation (e.g., a `deny` on `secrets/metadata/restricted/*` but allowed `list` on `secrets/metadata/*`), OpenBao would incorrectly allow the operation. This did not impact other operation types.\n\n## Patches\n\nThis has been patched in OpenBao v2.6.0.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/openbao/openbao"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.0-20260713133043-f58d848c139e"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/openbao/openbao"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.1.0"
      }, {
        "last_affected" : "1.1.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openbao/openbao/pull/3389"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openbao/openbao/pull/3474"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openbao/openbao"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openbao/openbao/releases/tag/v2.6.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-22T20:36:56Z",
    "nvd_published_at" : null
  }
}

CVSS V4

N/A MODERATE

Attack Vector N/A

Attack Complexity N/A

Privileges Required N/A

User Interaction N/A

Scope N/A

Confidentiality N/A

Integrity N/A

Availability N/A

Vector String

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Advisory Metadata

Source ID: GHSA-xp3c-3jw3-4vcr
Schema Version: 1.4.0
Published: 2026-09-22 20:36
Last Modified: 2026-09-22 20:36
Database Record File: advisories/github-reviewed/2026/09/GHSA-xp3c-3jw3-4vcr/GHSA-xp3c-3jw3-4vcr.json