CVE-2026-39946: OpenBao is an open source identity-based secrets management system

Q: How do I fix CVE-2026-39946?

openbao: upgrade to 2.5.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-39946 being exploited?

CVE-2026-39946 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-39946 affect?

CVE-2026-39946 affects openbao. Severity is medium (CVSS 4.9). OpenBao is an open source identity-based secrets management system. Prior to version 2.5.3, when OpenBao revoked privileges on a role in the PostgreSQL database secrets engine, OpenBao failed to use proper database quoting on schema names p

Q: How urgent is CVE-2026-39946?

Priority 21/100. No elevated risk signals yet.

Routine

MEDIUM 4.9UPGRADE

CVE-2026-39946 is a medium-severity flaw (CVSS 4.9) affecting openbao. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.3, when OpenBao revoked privileges on a role in the PostgreSQL database secrets engine, OpenBao failed to use proper database quoting on schema names provided by PostgreSQL. This could lead to role revocation failures, or more rarely, SQL injection as the management user. This vulnerability was original from HashiCorp Vault. The vulnerability is addressed in

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-89
Published	2026-04-21
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: openbao

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-21 01:16 UTCPublished CVE record published
2026-06-17 10:42 UTCUpdated Record last modified

openbao openbao UPGRADE

Affected: < 2.5.3

Fixed in: 2.5.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openbao || rpm -q openbao || openbao --version

2. UPGRADE to 2.5.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openbao

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openbao

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-39946?

openbao: upgrade to 2.5.3. Exact commands for each OS are on this page.

Is CVE-2026-39946 being exploited?

CVE-2026-39946 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-39946 affect?

CVE-2026-39946 affects openbao. Severity is medium (CVSS 4.9). OpenBao is an open source identity-based secrets management system. Prior to version 2.5.3, when OpenBao revoked privileges on a role in the PostgreSQL database secrets engine, OpenBao failed to use proper database quoting on schema names p

How urgent is CVE-2026-39946?

Priority 21/100. No elevated risk signals yet.

Software pages

PostgreSQL vulnerabilities · HashiCorp Vault vulnerabilities

Related CVEs

CVE-2026-42186 HIGH 7.5 UPGRADE OpenBao is an open source identity-based secrets management system
CVE-2026-40264 LOW 2.7 UPGRADE OpenBao is an open source identity-based secrets management system
CVE-2026-39396 LOW 3.1 UPGRADE OpenBao is an open source identity-based secrets management system
CVE-2026-39388 LOW 3.1 UPGRADE OpenBao is an open source identity-based secrets management system

References

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