Vulnerability-Lookup

GHSA-P49J-V9WC-WG57

Vulnerability from github – Published: 2026-04-21 18:27 – Updated: 2026-04-21 18:27

Summary

OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation

Details

Impact

OpenBao's namespaces provide multi-tenant separation. A tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant.

Patches

This was addressed in v2.5.3.

Severity ?

2.0 (Low)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/openbao/openbao"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20260420162526-f58111d2ca54"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40264"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1259"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-21T18:27:42Z",
    "nvd_published_at": "2026-04-21T01:16:06Z",
    "severity": "LOW"
  },
  "details": "### Impact\n\nOpenBao\u0027s namespaces provide multi-tenant separation. A tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant.\n\n### Patches\n\nThis was addressed in v2.5.3.",
  "id": "GHSA-p49j-v9wc-wg57",
  "modified": "2026-04-21T18:27:42Z",
  "published": "2026-04-21T18:27:42Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40264"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbao/openbao/pull/2934"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbao/openbao/commit/059cc5950303688335d5c8ab9af8e453795d693a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/openbao/openbao"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbao/openbao/releases/tag/v2.5.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenBao\u0027s Token Store Allows Cross-Namespace Renewal, Revocation"
}

CVE-2026-40264 (GCVE-0-2026-40264)

Vulnerability from cvelistv5 – Published: 2026-04-21 00:47 – Updated: 2026-04-21 19:30

Title

OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation

Summary

OpenBao is an open source identity-based secrets management system. OpenBao's namespaces provide multi-tenant separation. Prior to version 2.5.3, a tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. This is addressed in v2.5.3.

Severity ?

2 (Low)


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

CWE

CWE-1259 - Improper Restriction of Security Token Assignment

Assigner

GitHub_M

References

URL

Tags

https://github.com/openbao/openbao/security/advis…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	openbao	openbao	Affected: < 2.5.3

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-40264",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-21T19:30:42.448978Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-21T19:30:51.975Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "openbao",
          "vendor": "openbao",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.5.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenBao is an open source identity-based secrets management system. OpenBao\u0027s namespaces provide multi-tenant separation. Prior to version 2.5.3, a tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. This is addressed in v2.5.3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 2,
            "baseSeverity": "LOW",
            "privilegesRequired": "HIGH",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1259",
              "description": "CWE-1259: Improper Restriction of Security Token Assignment",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-21T00:47:38.156Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57"
        }
      ],
      "source": {
        "advisory": "GHSA-p49j-v9wc-wg57",
        "discovery": "UNKNOWN"
      },
      "title": "OpenBao\u0027s Token Store Allows Cross-Namespace Renewal, Revocation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-40264",
    "datePublished": "2026-04-21T00:47:38.156Z",
    "dateReserved": "2026-04-10T17:31:45.787Z",
    "dateUpdated": "2026-04-21T19:30:51.975Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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