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OpenStack Octavia CVE-2026-74248

| EUVDEUVD-2026-58807 MEDIUM
Incorrect Authorization (CWE-863)
2026-08-14 mitre GHSA-3gfv-q5hp-jpcf
4.3
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
vuln.today AI
4.3 MEDIUM

Octavia API is network-accessible requiring valid tenant credentials (PR:L); cross-project policy lock-in produces partial integrity impact only, with no confidentiality or availability loss.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (mitre).

CVSS VectorVendor: mitre

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

2
Patch available
Aug 14, 2026 - 21:16 EUVD
Analysis Generated
Aug 14, 2026 - 21:06 vuln.today

DescriptionCVE.org

OpenStack Octavia through 18.0.0 mishandles quality of service (QoS) policy authorization. By associating another project's QoS policy with an amphora, an authenticated user may prevent deletion of that policy. All Octavia deployments are affected.

AnalysisAI

QoS policy authorization bypass in OpenStack Octavia through version 18.0.0 permits authenticated tenant users to associate another project's Quality of Service policy with an amphora they control, blocking the legitimate policy owner from deleting that resource. The vendor confirms all Octavia deployments are affected, making this a universal tenant-isolation concern for multi-tenant OpenStack clouds. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as low-privileged OpenStack tenant
Exploit
Enumerate or obtain foreign project QoS policy UUID
Execution
Submit Octavia API request associating foreign QoS policy to attacker-controlled amphora
Impact
Victim project owner blocked from deleting their own QoS policy

Vulnerability AssessmentAI

Exploitation Exploitation requires an authenticated OpenStack account with at minimum tenant-level privileges to create or modify amphorae in at least one project (CVSS PR:L confirmed). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.3 vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N correctly characterizes this as low-complexity, network-accessible, authenticated exploitation with only partial integrity impact and zero confidentiality or availability loss. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated tenant user on a shared OpenStack cloud obtains the UUID of a QoS policy belonging to a separate project - potentially through API enumeration if list permissions are permissive, or through prior knowledge. The attacker calls the Octavia API to associate that foreign QoS policy UUID with an amphora in their own project. …
Remediation No vendor-released patched version with a confirmed fixed build number has been identified in the available intelligence at time of analysis; the references point to an upstream bug tracker (https://bugs.launchpad.net/octavia/+bug/2161500) and an oss-security disclosure (https://www.openwall.com/lists/oss-security/2026/08/13/12) rather than a tagged release. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-74248 vulnerability details – vuln.today

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