Answer in brief
CVE-2026-55776 records a Medium severity (CVSS 6.5) vulnerability in OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types. The current sources do not mark it as known exploited. The current feed maps openbao/openbao (generic), github.com/openbao/openbao (go), github.com/openbao/openbao (go), github.com/openbao/openbao (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps openbao/openbao (generic), github.com/openbao/openbao (go), github.com/openbao/openbao (go), github.com/openbao/openbao (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| openbao/openbaogeneric | <2.5.5 | 2.5.5 |
| github.com/openbao/openbaogo | >=0.1.0,<=2.5.4 | Not reported |
| github.com/openbao/openbaogo | <0.0.0-20260617104123-db57c62602b2 | 0.0.0-20260617104123-db57c62602b2 |
| github.com/openbao/openbaogo | >=0.1.0 | Not reported |
| github.com/openbao/openbaogo | >=0 <0.0.0-20260617104123-db57c62602b2 | 0.0.0-20260617104123-db57c62602b2 |
| github.com/openbao/openbaogo | >=0 <0.0.0-20260617104123-db57c62602b2 >=0.1.0 | 0.0.0-20260617104123-db57c62602b2 |
Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.