CVE-2026-41283: openstack mistral Incorrect Authorization
CVSS: 9.9v3.1CriticalAwaiting analysis
AliasesGHSA-9hfw-w3f4-c4p8PYSEC-2026-3486UBUNTU-CVE-2026-41283DEBIAN-CVE-2026-41283
Published 04-06-2026Last modified 15-07-2026
Vulnerability summary
CVE-2026-41283 is a critical (CVSS 9.9) Incorrect Authorization vulnerability in openstack mistral. EPSS estimates a 0.92% chance of exploitation in the next 30 days, higher than 59.4% of scored vulnerabilities.
CVSS score
9.9/10
010
Critical · v3.1 (CVE.org)EPSS score
0.92%
0%100%
Low · +0.18 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 04-06-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 5 sources · 1 versionCritical 9.9Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HSourcesAll 5 agree
- OSV · PypiEcosystem advisory · calculated9.9CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated9.9CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.9CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- NVDNIST9.9CriticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
0.92%
Chance of exploitation in the next 30 days
Percentile
59%
Versus all other CVEs
30-day change
+0.18 pp
From 0.73% on 18-09-2026
18-09-202618-10-2026
EPSS score0.92%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-863Incorrect AuthorizationThe product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
- CWE-749Exposed Dangerous Method or FunctionThe product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.
Affected systems
Debian1 product
- mistral< 15.0.0-1+deb12u1 | < 20.0.0-2+deb13u1 | < 22.0.0-3
Openstack1 product
- mistral≥ 20.0.0, < 20.1.1 | 21.0.0 | 22.0.0
PyPI1 product
- mistral≥ 20.0.0, < 20.1.1 | 21.0.0 | 22.0.0
Ubuntu1 product
- mistralAll versions (No fix recorded) | < 14.0.0-0ubuntu1.1 | < 18.0.1-0ubuntu1.1 | < 21.0.0-0ubuntu1.1 | < 22.0.0-0ubuntu1.1
4 vendors · 4 products
References
16 links
- github.com/openstack/mistralPACKAGE
- pypi.org/project/mistralPACKAGE
