OpenStack Mistral through 22.0.0 allows Arbitrary Remote Code Execution when the API is exposed.
Noroxi assessment
Priority: Monitor (action score 39/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.91% (FIRST EPSS); higher than 59.4% of all records.
- Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: OpenStack Mistral 20.1.1.
Low priority for now. Upgrade to OpenStack Mistral 20.1.1 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
OpenStack Mistral through 22.0.0 allows Arbitrary Remote Code Execution when the API is exposed. There are endpoints that allow code execution, which can lead to exfiltration of service credentials.
- Published
- Jun 4, 2026
- Updated
- Jul 22, 2026
- EPSS
- 0.9% · 59th percentile
- CWE
- CWE-863
Report tools
Action score
39
Monitor
Low priority for now.
- CVSS
- 39 / 40 · 9.9 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.9%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · mitre
- 9.9
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| openstack | 16.2 | cpe:2.3:redhat:openstack:16.2 |
Versions reported by the vendor
Affected version ranges reported by the assigning authority (mitre). Independent of NVD's CPE analysis and usually ahead of it.
OpenStack Mistral
- 21.0.0, 22.0.0affected
- 20.0.0 and later · before 20.1.1affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | mistral | before 15.0.0-1+deb12u1 | 15.0.0-1+deb12u1 |
| Debian:13 | mistral | before 20.0.0-2+deb13u1 | 20.0.0-2+deb13u1 |
| Debian:14 | mistral | before 22.0.0-3 | 22.0.0-3 |
| PyPI | mistral | from 20.0.0 · before 20.1.1 | 20.1.1 |
| PyPI | mistral | from 21.0.0 · up to and including 21.0.0 | — |
| PyPI | mistral | from 22.0.0 · up to and including 22.0.0 | — |
Same product
openstack: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-93858In OpenStack Mistral through 23.0.0, the std.ssh_proxied action passes a caller-supplied proxy_command value directly to paramiko.ProxyComma34Monitor
- CVE-2026-97147In OpenStack Mistral through 23.0.0, several of the v2 API write paths resolve the target object with a query that can return another projec28Monitor
- CVE-2026-93860In OpenStack Mistral through 23.0.0, the /v2/maintenance API controller clears the request context and calls the maintenance service directl28Monitor
Published before and after this one in the same product
- Later →CVE-2026-93861Oct 8, 2026 · In OpenStack Mistral through 23.0.0, the workflow membership API lets a project that has accepted a share of another project's private workf24Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| OpenStack Mistral | 20.1.1 | Vendor (CNA) |
| debian:mistral | 15.0.0-1+deb12u1 · Debian:12 | Package registry (OSV) |
| PyPI:mistral | 20.1.1 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-97147126 days apartIn OpenStack Mistral through 23.0.0, several of the v2 API write paths resolve the target object with a query that can return another projec28Monitor
- CVE-2026-93861126 days apartIn OpenStack Mistral through 23.0.0, the workflow membership API lets a project that has accepted a share of another project's private workf24Monitor
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
Impact can extend beyond the vulnerable component (scope changes).
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-863 · Incorrect AuthorizationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Show all references (6 more)Show less
- security.openstack.org/ossa/OSSA-2026-020.html
- www.openwall.com/lists/oss-security/2026/06/03/14
- www.openwall.com/lists/oss-security/2026/06/03/14
- access.redhat.com/security/cve/CVE-2026-41283
- bugzilla.redhat.com/show_bug.cgi?id=2484607
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-41283.json
Vendor advisories and official records. Exploit/PoC links are deliberately left out.