CVE-2025-65073 — keystone
HIGHCVE-2025-65073 is a high-severity (CVSS 7.5) CWE-863 vulnerability in keystone. A fix is available for keystone — see the affected versions and patch details below.
OpenStack Keystone allows /v3/ec2tokens or /v3/s3tokens request with valid AWS Signature to provide Keystone authorization.
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-65073.
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
CVE-2025-65073 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
keystone🐍keystone🐍keystoneReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
OpenStack Keystone before 26.0.1, 27.0.0, and 28.0.0 allows a /v3/ec2tokens or /v3/s3tokens request with a valid AWS Signature to provide Keystone authorization.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | keystone | all versions | 26.0.1pip install --upgrade 'keystone==26.0.1' |
| 🐍PyPI | keystone | ≥ 27.0.0.0rc1&&< 27.0.0 | 27.0.0pip install --upgrade 'keystone==27.0.0' |
| 🐍PyPI | keystone | ≥ 28.0.0.0rc1&&< 28.0.0 | 28.0.0pip install --upgrade 'keystone==28.0.0' |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for keystone, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update keystone to 26.0.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-65073 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-65073 can be triaged on real exposure rather than presence alone.
Tailored to CVE-2025-65073. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Fixing This On Your OS
If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.
This vulnerability allows an attacker to obtain a valid OpenStack's Keystone token belonging to a valid user by sending a valid AWS signature to the /v3/ec2tokens or /v3/s3tokens API's endpoints, leading to access to unauthorized resources or privilege escalation within the OpenStack instance. This attack is…
| Product | Fixed in | Advisory |
|---|---|---|
| Red Hat OpenStack Platform 16.2 | openstack-keystone-1:16.0.3-2.20260616134936.9d699a7.el8ost | RHSA-2026:54757 |
| Red Hat OpenStack Platform 17.1 for RHEL 9 | openstack-swift-0:2.27.1-17.1.20231004180819.el9ost | RHSA-2026:28044 |
| Red Hat OpenStack Services on OpenShift 18.0 | openstack-keystone-1:23.0.3-18.0.20241202141842.9e3dfb4.el9ost | RHSA-2026:1958 |
Frequently Asked Questions
Is CVE-2025-65073 in your dependencies?
O3 Security finds CVE-2025-65073 across PyPI dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.