Answer in brief
CVE-2026-128100 records a Medium severity (CVSS 6.5) vulnerability in Vault vulnerable to ACL deny bypass via case-variant auth method user and group names. The current sources do not mark it as known exploited. The current feed maps HashiCorp/Vault (generic), HashiCorp/Vault Enterprise (generic). 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 HashiCorp/Vault (generic), HashiCorp/Vault Enterprise (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| HashiCorp/Vaultgeneric | >=0.10.0 <2.2.2 | 2.2.2 |
| HashiCorp/Vault Enterprisegeneric | >=0.10.0 <2.2.2 | 2.2.2 |
Published upstream
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 13, 2026
Vault Community Edition and Vault Enterprise did not apply explicit ACL policy deny rules to letter case variants of user and group names in auth methods that treat these names as case-insensitive. This may allow an authenticated user with delegated permissions to modify a protected user or group, potentially leading to privilege escalation. This vulnerability (CVE-2026-128100) is fixed in Vault Community Edition 2.2.2 and Vault Enterprise 2.2.2, 1.21.14, and 1.19.25.
Quoted source text, attributed separately from HOL analysis.