Dashboard / CVE-2026-33551

CVE-2026-33551

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 51/100
Published: 2026-04-10 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Unchanged
C: High
I: None
A: None

Description

An issue was discovered in OpenStack Keystone 14 through 26 before 26.1.1, 27.0.0, 28.0.0, and 29.0.0. Restricted application credentials can create EC2 credentials. By using a restricted application credential to call the EC2 credential creation API, an authenticated user with only a reader role may obtain an EC2/S3 credential that carries the full set of the parent user's S3 permissions, effectively bypassing the role restrictions imposed on the application credential. Only deployments that use restricted application credentials in combination with the EC2/S3 compatibility API (swift3 / s3api) are affected.

Weakness Classification (1)

Affected Software (4)

VendorProductVersion
openstack keystone 14.0.0 – 26.1.1
openstack keystone 27.0.0
openstack keystone 28.0.0
openstack keystone 29.0.0

References & Advisories (3)

http://www.openwall.com/lists/oss-security/2026/04/07/12
Mailing List Patch Third Party Advisory

Bug Bounty Relevance

51 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

5.3 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.22%
Raw Score 0.002200
Percentile 12.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00220
2026-10-28
0.00220

Intelligence Sources

nvd ref →

External Links