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CVE-2026-33757

32
FAUCET Score

CVE-2026-33757 affects OpenBao versions prior to 2.5.2, allowing "remote phishing" due to a lack of user confirmation during JWT/OIDC logins when a role's callback_mode is set to direct. Rated with a CVSS score of 8.3 (HIGH), this vulnerability has a network attack vector, low attack complexity, and requires user interaction, potentially leading to high impact on confidentiality and integrity. Although not actively exploited in the wild (KEV: No, EPSS: 0.0006) and lacking public exploit code, it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.5.2CPE matchmatch criteria
cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.6CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 37th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
gopatch availablevia ghsa
Product: github.com/openbao/openbaoFixed in: 0.0.0-20260325142553-e32103951925

Vendor Advisories (1)

goGHSA-7q7g-x6vg-xpc3critical

OpenBao lacks user confirmation for OIDC direct callback mode

Mar 26, 2026

References

access.redhat.com / security/cve/CVE-2026-33757
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-33757.json
datatracker.ietf.org / doc/html/rfc8628
Technical Description
github.com / openbao/openbao/commit/e32103951925723e9787e33886ab6b6ec20f4964
Patch
github.com / openbao/openbao/security/advisories/GHSA-7q7g-x6vg-xpc3
Vendor Advisory