Medium severity6.1NVD Advisory· Published Mar 27, 2026· Updated Jul 15, 2026
CVE-2026-33758
CVE-2026-33758
Description
OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao installations that have an OIDC/JWT authentication method enabled and a role with callback_mode=direct configured are vulnerable to XSS via the error_description parameter on the page for a failed authentication. This allows an attacker access to the token used in the Web UI by a victim. The error_description parameter has been replaced with a static error message in v2.5.2. The vulnerability can be mitigated by removing any roles with callback_mode set to direct.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/openbao/openbaoGo | < 0.0.0-20260325133417-6e2b2dd84f0e | 0.0.0-20260325133417-6e2b2dd84f0e |
Affected products
7- osv-coords5 versionspkg:bitnami/openbaopkg:golang/github.com/openbao/openbaopkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2015.6pkg:rpm/opensuse/govulncheck-vulndb&distro=openSUSE%20Leap%2016.0pkg:rpm/opensuse/openbao&distro=openSUSE%20Tumbleweed
< 2.5.2+ 4 more
- (no CPE)range: < 2.5.2
- (no CPE)range: < 0.0.0-20260325133417-6e2b2dd84f0e
- (no CPE)range: < 0.0.20260326T203309-150000.1.155.2
- (no CPE)range: < 0.0.20260723T184607-160000.1.1
- (no CPE)range: < 2.5.2-1.1
Patches
Vulnerability mechanics
References
9- github.com/openbao/openbao/commit/6e2b2dd84f0e47cebc90d6e79609dd5274732662nvdPatchWEB
- github.com/openbao/openbao/pull/2709nvdIssue TrackingPatchWEB
- github.com/advisories/GHSA-cpj3-3r2f-xj59ghsaADVISORY
- github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-33758ghsaADVISORY
- github.com/openbao/openbao/releases/tag/v2.5.2nvdProductRelease NotesWEB
- access.redhat.com/security/cve/CVE-2026-33758nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33758.jsonnvd
News mentions
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