CVE Tools
Sign in

CVE-2026-33551

Published: Apr 10, 2026Updated: Jun 5, 2026 Sources: CVE List NVDCWE-863
NVD MITRE
3.5CVSSLOW
EPSS Score
0.2%
Top 88.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:HPR:LUI:NS:CC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-863

Affected Products

keystoneopenstack
SaaSWeb App
Cloud & SaaS / cloud-platform
KeystoneOpenStack
SaaSWeb App
Cloud & SaaS / cloud-platform
openstackoss-projectUSCloud & SaaSaka openstack foundation

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://bugs.launchpad.net/keystone/+bug/2142138
bugs.launchpad.net
https://security.openstack.org/ossa/OSSA-2026-005.html
security.openstack.org
http://www.openwall.com/lists/oss-security/2026/04/07/12
openwall.com

Timeline

Published
Apr 10, 2026
Last Updated
Jun 5, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-33551 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows