CVE catalog
CVE-2026-33758
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=dir
- Severity
- Critical · CVSS 9.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.30% · Oct 25, 2026
A flaw was found in OpenBao. Installations that have an OIDC/JWT authentication method enabled with a role configured to use `callback_mode=direct` are vulnerable to XSS via the `error_description` parameter on the page for a failed authentication. This allows an attacker to access the token used by an authenticated user in the Web UI. OpenBao: reflected XSS in OpenBao OIDC authentication error message To exploit this vulnerability, an attacker needs to convince a user to visit a crafted URL, limiting the exposure of this flaw. Due to this reason, this issue has been rated with an important severity. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | openbao | Not reported | 2.5.2 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | openbao | cpe | Not reported | 2.5.2 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_10438-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-33758]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33758.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0864.json]
[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]