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TI-2026-50123 Aliases CVE-2026-71543GHSA-59w7-v8rr-pr4p

OpenBao's Templated Policies Allow Privilege Escalation via Wildcard Characters

Priority LOW 35CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.

Summary

OpenBao is an open source identity-based secrets management system. Prior to 2.6.0, templated ACL, PKI, and SSH policies could substitute attacker-controlled identity data without rejecting syntax-significant characters. In ACL templated policies, asterisks, plus signs, and slashes could alter path matching. In PKI allowed_uri_sans_template and allowed_domains policies, an asterisk could broaden certificate issuance to unauthorized domains. In SSH allowed_users and allowed_domains policies, a comma could add unauthorized principals. Exploitation requires a deployment to use templated policy data that users can freely modify; templates based on the randomly generated identity.entity.id value are not affected. This could allow privilege escalation, unauthorized access, and unauthorized certificate issuance. This issue is fixed in version 2.6.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00421 36th percentileScored 2026-11-07
Fix Fixed openbao (openbao): 2.6.0github.com/openbao/openbao (Go): 0.0.0-20260710001938-2d4ebafec5c5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
openbaoopenbaobefore 2.6.02.6.0Patch availableCNA
—github.com/openbao/openbao (Go)before 0.0.0-20260710001938-2d4ebafec5c50.0.0-20260710001938-2d4ebafec5c5Patch availableGHSA-59w7-v8rr-pr4p
—github.com/openbao/openbao (Go)0.1.0 – 1.1.5—No fix listedGHSA-59w7-v8rr-pr4p
  • openbao Vendoropenbao Affected before 2.6.0 Fixed in 2.6.0 Patch available CNA
  • github.com/openbao/openbao (Go) Vendor— Affected before 0.0.0-20260710001938-2d4ebafec5c5 Fixed in 0.0.0-20260710001938-2d4ebafec5c5 Patch available GHSA-59w7-v8rr-pr4p
  • github.com/openbao/openbao (Go) Vendor— Affected 0.1.0 – 1.1.5 Fixed in — No fix listed GHSA-59w7-v8rr-pr4p

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*——openbao
  • cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:* Versions — — ·openbao

Remediation

  • Fix · CNA openbao (openbao) Fixed in 2.6.0
  • Fix · GHSA-59w7-v8rr-pr4p github.com/openbao/openbao (Go) Fixed in 0.0.0-20260710001938-2d4ebafec5c5 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-71543
  2. 2026-10-03 Alias added: GHSA-59w7-v8rr-pr4p

References

Advisory 1

Other 8

  • TI-2024-01904 Vault Cert Auth Method Did Not Correctly Validate Non-CA Certificates CVSS 3.1CRITICAL 9.8
  • TI-2026-34075 OpenBao's Inline Auth Incorrectly Redacted Headers CVSS 4.0MEDIUM 5.4
  • TI-2026-40259 OpenBao: LDAPi ldaputil (wrong escape func) CVSS 3.1MEDIUM 6.8
  • TI-2026-40265 OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types CVSS 3.1MEDIUM 6.5
  • TI-2026-28381 OpenBao has Decompression Bomb via Unbounded Copy in OCI Plugin Extraction (DoS) CVSS 3.1MEDIUM 6.5
  • TI-2026-45068 OpenBao's Recovery Mode Vulnerable To Token Leakage via Timing Attack CVSS 4.0CRITICAL 9.2
See all 48 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences