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Vulnerability Detail

CVE-2026-55776 Verified Sceawere Triage Sources: NVD / CISA KEV

Vulnerability Metadata

Severity
Medium
Score / CVSS
6.5
Creation Date
3h ago
Vendor
openbao
Product
openbao
Attack Type
CWE-617: Reachable Assertion
Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Complexity
LOW

Narrative and Response

Description

OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, an authenticated OpenBao caller with write access to transit/keys/* could terminate the server process by setting derived to true while the type parameter selected rsa-, ecdsa-, or ed25519. The Transit policy creation path in builtin/logical/transit/backend.go and sdk/helper/keysutil/policy.go could reach an error path that double-unlocked a mutex while handling this invalid asymmetric derived-key combination, causing a panic, no HTTP response, process exit, and denial of service. JSON and HCL key-creation requests can express the triggering combination. This issue is fixed in version 2.5.5.

Executive Summary

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Technical Details

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Mitigations

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References

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Additional Metadata

{
  "score": "6.5",
  "pubDate": "2026-09-15T16:17:16.220Z",
  "pubdate": "2026-09-15T16:17:16.220Z"
}
CVE-2026-55776: CVE-2026-55776 Vulnerability (MEDIUM Severity, CVSS: 6.5) | Sceawere