CVE-2026-74248
Description
A flaw was found in OpenStack Octavia. An authenticated user can exploit this vulnerability by associating a Quality of Service (QoS) policy from another project with an amphora. This mishandling of QoS policy authorization may prevent the deletion of the policy, leading to a denial of service (DoS) condition for affected Octavia deployments.
Statement
A flaw was found in OpenStack Octavia's handling of Quality of Service (QoS) policy authorization. An authenticated user can associate a QoS policy owned by another project with their own amphora by exploiting insufficient tenant scoping checks in the validation function. This creates a dependency that prevents the policy owner from deleting the policy, resulting in an HTTP 409 error. The attacker cannot read, modify, or apply the policy's rules to their own traffic — the impact is limited to preventing administrative cleanup of the referenced policy.
Mitigation
Update to OpenStack Octavia 16.1.0 or later, or apply the patches merged for stable/2026.1, stable/2025.2, and stable/2025.1 branches. As a workaround, restrict project member permissions or implement additional policy isolation controls at the Neutron level to limit cross-tenant QoS policy discovery.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.3 | N/A | 4.3 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | Low | N/A | Low |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | Low | N/A | Low |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
cve.org: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Access control checks for specific user data or functionality can be bypassed.
Access Control
Technical Impact: Gain Privileges or Assume Identity
Horizontal escalation of privilege is possible (one user can view/modify information of another user).
Access Control
Technical Impact: Gain Privileges or Assume Identity
Vertical escalation of privilege is possible if the user-controlled key is actually a flag that indicates administrator status, allowing the attacker to gain administrative access.
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