GHSA-87r7-q54j-f9qg is a critical-severity (CVSS 9.8) Improper Input Validation vulnerability in murano. A fix is available for murano — see the affected versions and patch details below.
OpenStack Murano Code Execution
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
GHSA-87r7-q54j-f9qg by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 379,842 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
murano🐍murano-dashboard🐍murano-dashboard🐍python-muranoclient🐍python-muranoclientReal-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 Murano before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), Murano-dashboard before 1.0.3 (liberty) and 2.x before 2.0.1 (mitaka), and python-muranoclient before 0.7.3 (liberty) and 0.8.x before 0.8.5 (mitaka) improperly use loaders inherited from yaml.Loader when parsing MuranoPL and UI files, which allows remote attackers to create arbitrary Python objects and execute arbitrary code via crafted extended YAML tags in UI definitions in packages.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | murano | all versions | 1.0.3pip install --upgrade 'murano==1.0.3' |
| 🐍PyPI | murano-dashboard | all versions | 1.0.3pip install --upgrade 'murano-dashboard==1.0.3' |
| 🐍PyPI | murano-dashboard | ≥ 2.0.0&&< 2.0.1 | 2.0.1pip install --upgrade 'murano-dashboard==2.0.1' |
| 🐍PyPI | python-muranoclient | all versions | 0.7.3pip install --upgrade 'python-muranoclient==0.7.3' |
| 🐍PyPI | python-muranoclient | ≥ 0.8.0&&< 0.8.5 | 0.8.5pip install --upgrade 'python-muranoclient==0.8.5' |
Affected Products
mitaka-muranoopenstackmuranoopenstackmurano-dashboardopenstackpython-muranoclientopenstackDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for murano, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update murano to 1.0.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-87r7-q54j-f9qg 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.
Frequently Asked Questions
Is GHSA-87r7-q54j-f9qg in your dependencies?
Find it across PyPI, including transitive dependencies.