Uncontrolled resource consumption in openstack-mistral
Priority LOW 31CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 5 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
Summary
A Denial of Service (DoS) condition is possible in OpenStack Mistral in versions up to and including 7.0.3. Submitting a specially crafted workflow definition YAML file containing nested anchors can lead to resource exhaustion culminating in a denial of service.
Why it matters now
EPSS 0.01176 67th percentileScored 2026-11-07
Fix Partial mistral (PyPI): 10.0.0Red Hat: 5 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | openstack-mistral | up to and including 7.0.3 | — | No fix listed | CNA |
| — | mistral (PyPI) | before 10.0.0 | 10.0.0 | Patch available | GHSA-443j-6p7g-6v4w |
- openstack-mistral Vendor— Affected up to and including 7.0.3 Fixed in — No fix listed CNA
- mistral (PyPI) Vendor— Affected before 10.0.0 Fixed in 10.0.0 Patch available GHSA-443j-6p7g-6v4w
Remediation
- Fix · GHSA-443j-6p7g-6v4w mistral (PyPI) Fixed in 10.0.0 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenStack Platform 10 (Newton) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 12 (Pike) | Affected | No fix planned: Out of support scope |
| Red Hat OpenStack Platform 13 (Queens) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 14 (Rocky) | Affected | No fix planned: Will not fix |
| Red Hat OpenStack Platform 15 (Stein) | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2018-16848
- 2026-10-03 Alias added: GHSA-443j-6p7g-6v4w
References
Advisory 3
More Red Hat Openstack-mistral vulnerabilities
- TI-2018-12059 Information disclosure in [UNKNOWN] openstack-mistral CVSS 3.0HIGH 7.5
- TI-2019-02876 Incorrect permission assignment in [UNKNOWN] openstack-mistral CVSS 3.1MEDIUM 5.5
Sources
- CVE-2018-16848 · CVE Program
- CVE-2018-16848 · NVD
- FIRST EPSS
- GHSA-443j-6p7g-6v4w · GitHub Advisory Database · CC BY 4.0
- CVE-2018-16848 · Red Hat security data · CC BY 4.0
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