Advisory details:
pypa / keystone/PYSEC-2026-202
| Advisory ID | pypa/keystone/PYSEC-2026-202 |
| Aliases |
CVE-2026-33551
GHSA-4phw-6824-6cfp PYSEC-2026-202 |
| Summary | 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. |
| Status | Published |
| Exploitability | 0.5 |
| Weighted Severity | 4.8 |
| Risk | 2.4 |
| Affected and Fixed Packages | Package Details |
| Introduced and Fixed Package Commit Patches | Package Commit Patches Details |
| There are no known CWE. |
| System | Score | Found at |
|---|---|---|
| cvssv3.1 | 5.3 | https://github.com/pypa/advisory-database/blob/main/vulns/keystone/PYSEC-2026-202.yaml |
| Reference id | Reference type | URL |
|---|---|---|
| https://bugs.launchpad.net/keystone/+bug/2142138 | ||
| https://security.openstack.org/ossa/OSSA-2026-005.html | ||
| http://www.openwall.com/lists/oss-security/2026/04/07/12 | ||
| GHSA-4phw-6824-6cfp | https://github.com/advisories/GHSA-4phw-6824-6cfp |
No exploits are available.
No EPSS data available for this advisory.
| Patch URL | |
|---|---|
| There are no known patches. | |
| Attack Vector (AV) | Attack Complexity (AC) | Privileges Required (PR) | User Interaction (UI) | Scope (S) | Confidentiality Impact (C) | Integrity Impact (I) | Availability Impact (A) |
|---|---|---|---|---|---|---|---|
network adjacent_network local physical |
low high |
none low high |
none required |
unchanged changed |
high low none |
high low none |
high low none |
Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-10T13:50:09Z/
Decision: Track
Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/33xxx/CVE-2026-33551.json
Source Advisory: vulnrichment/CVE-2026-33551
[{'Exploitation': 'poc'},
{'Automatable': 'no'},
{'Technical Impact': 'partial'},
{'Mission Prevalence': 'minimal'},
{'Public Well-being Impact': 'material'},
{'Mission & Well-being': 'medium'}]