CVE-2026-46405 (GCVE-0-2026-46405)

Vulnerability from cvelistv5 – Published: 2026-08-07 21:14 – Updated: 2026-08-07 21:14
VLAI
Title
OpenBao's Kerberos Auth Method Accumulates Unaccessible Tokens
Summary
OpenBao is an open source identity-based secrets management system. Prior to version 2.5.4, in OpenBao's Kerberos auth method on the `GET` handler, or when an `Authorization: Negotiate` header is supplied, the response is includes a `logical.Auth` object in addition to an error message. This results in tokens being created with only the default policy, default TTL, and no entity information, which are hidden by the returned error message. No access to these tokens by the caller occurs and the authentication token is not ever made accessible outside of `sys/raw`. This is fixed in OpenBao v2.5.4. As a workaround, users may set a rate limit quota to limit the creation of these paths. As the path is unauthenticated, it isn't possible to deny access to it.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
openbao openbao Affected: < 2.5.4
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        }
      ],
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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      "source": {
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        "discovery": "UNKNOWN"
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      "title": "OpenBao\u0027s Kerberos Auth Method Accumulates Unaccessible Tokens"
    }
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    "datePublished": "2026-08-07T21:14:35.512Z",
    "dateReserved": "2026-05-13T21:04:10.932Z",
    "dateUpdated": "2026-08-07T21:14:35.512Z",
    "state": "PUBLISHED"
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    "suse_vex": {
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      "cve": "CVE-2026-46405",
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      "product_status:recommended": "8",
      "source": "SUSE CSAF VEX",
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      "title": "SUSE CVE CVE-2026-46405",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46405.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.