CVE-2026-94571Network attack vector

Root command execution via HAProxy directive injection

Published Sep 21, 2026 · Updated Sep 21, 2026

Code injection in OpenStack Octavia 0.8.0 through 16.0.x, 17.0.0, and 18.0.0 allows remote authenticated users to execute commands. URL validation percent-encodes control characters but stores the raw redirect_url or redirect_prefix, so newlines become HAProxy directives. The attacker must own a load balancer using the Amphora provider; injected directives run as root on its amphora and expose tenant keys and control-plane access.

CVSS severity9.4
Critical
EPSS probability0.53%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in OpenStack Octavia 0.8.0 through 16.0.x, 17.0.0, and 18.0.0 allows remote authenticated users to execute commands. URL validation percent-encodes control characters but stores the raw redirect_url or redirect_prefix, so newlines become HAProxy directives. The attacker must own a load balancer using the Amphora provider; injected directives run as root on its amphora and expose tenant keys and control-plane access.

The record

CVE
CVE-2026-94571
Published
Sep 21, 2026
Updated
Sep 21, 2026
Vendor
OpenStack
Product
Octavia
Classifications
CWE-94, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.8.0 <16.1.0
  2. Affected versionversion=17.0.0 <17.0.1
  3. Affected versionversion=18.0.0 <18.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenStack · Octaviaversion=0.8.0 <16.1.0; version=17.0.0 <17.0.1; version=18.0.0 <18.0.1

Published CVSS scores

9.4MITRECVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

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