CVE-2026-94571

Description

In OpenStack Octavia before 18.0.1, the Amphora provider driver did not reject control characters in the L7 policy redirect_url and redirect_prefix fields. The RFC 3986 URL validator percent-encodes control characters before validating, and thus newlines passed structural checks, but Octavia stored and wrote the raw unencoded value directly into the HAProxy configuration generated on the amphora. An authenticated project member who owns a load balancer can therefore inject arbitrary HAProxy directives through a REDIRECT_TO_URL L7 policy. Only deployments using the Amphora provider are affected.

Overview

State: PUBLISHED
Assigner (CNA): mitre
CVSS severity: CRITICAL
CVSS score: 9.4 / 10
CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Effective score: 9.4 / 10 CRITICAL source: CNA overview
CWE(s): CWE-94
Reserved: 2026-09-21
Published: 2026-09-21 20:09 UTC
Last updated: 2026-09-21 20:09 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/94xxx/CVE-2026-94571.json
Linked Threat: CVE-2026-94571 — CVE-2026-94571

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-21 21:17:21 UTC
NVD last modified: 2026-09-21 21:17:21 UTC

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-84116
Assigner: mitre
Published: Sep 21, 2026, 8:09:16 PM
Updated: Sep 22, 2026, 1:36:39 PM
EUVD base score (CVSS 4.0): 9.4 / 10
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EUVD-reported EPSS: 0.0000
Vendors: OpenStack
Products: Octavia (18.0.0 <18.0.1)

Octavia (0.8.0 <16.1.0)

Octavia (17.0.0 <17.0.1)
Aliases: GHSA-33h9-ppgm-5785

ENISA description: In OpenStack Octavia before 18.0.1, the Amphora provider driver did not reject control characters in the L7 policy redirect_url and redirect_prefix fields. The RFC 3986 URL validator percent-encodes control characters before validating, and thus newlines passed structural checks, but Octavia stored and wrote the raw unencoded value directly into the HAProxy configuration generated on the amphora. An authenticated project member who owns a load balancer can therefore inject arbitrary HAProxy directives through a REDIRECT_TO_URL L7 policy. Only deployments using the Amphora provider are affected.

EUVD references (6)

Affected products (1)

Vendor	Product	Versions	Platforms
OpenStack	Octavia	`0.8.0` (affected), `17.0.0` (affected), `18.0.0` (affected)	—

Vendor references (6)

References embedded in the original CVE record by the assigning CNA.

https://bugs.launchpad.net/octavia/+bug/2162103 issue-tracking
https://bugs.launchpad.net/octavia/+bug/2167565 issue-tracking
https://bugs.debian.org/1148175 issue-tracking
https://opendev.org/openstack/octavia/commit/bad7074621562d90a38be4639c1ab3e245f5bf39 patch
https://security.openstack.org/ossa/OSSA-2026-039.html vendor-advisory
https://openwall.com/lists/oss-security/2026/09/21/6 mailing-list

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (6)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://bugs.debian.org/1148175 cve@mitre.org
https://bugs.launchpad.net/octavia/+bug/2162103 cve@mitre.org
https://bugs.launchpad.net/octavia/+bug/2167565 cve@mitre.org
https://opendev.org/openstack/octavia/commit/bad7074621562d90a38be4639c1ab3e245f5bf39 cve@mitre.org
https://openwall.com/lists/oss-security/2026/09/21/6 cve@mitre.org
https://security.openstack.org/ossa/OSSA-2026-039.html cve@mitre.org

Remediations (10)

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

Patch Critical Check Point VPN Vulnerability (CVE-2026-50751)- Check ...

web:blog.checkpoint.com

Check Point issues an urgent hotfix for CVE - 2026 -50751, a critical IKEv1 VPN authentication bypass vulnerability under active exploitation.

2026-09-22 16:45 UTC
CVE-2026-94571 · OpenStack · CVSS 9.4 · CVE Brief Analyst Report

web:cvebrief.com

CVE - 2026 -71190 CVSS 8.7 CVE - 2026 -54423 CVSS 8.2 CVE - 2026 -41283 CVSS 9.9 History Sep 21, 2026 Disclosed CVE record published Sep 22, 2026 Collected by CVE Brief via github Sep 22, 2026 Analyst report written Sep 22, 2026 Published in the daily brief critical section Sources Issue tracker Issue tracker Issue tracker Patch commit Vendor advisory ...

2026-09-22 16:45 UTC
CVE-2026-94571 - OpenStack Octavia Amphora Provider Driver HAProxy ...

web:cvefeed.io

The following list is the news that have been mention CVE-2026-94571 vulnerability anywhere in the article. Results are limited to the first 20 news articles due to potential performance issues. The following table lists the changes that have been made to the CVE-2026-94571 vulnerability over time.

2026-09-22 16:45 UTC
NVD - Search

web:nvd.nist.gov

Search Please make use of the interactive search interfaces to find information in the database!

2026-09-22 16:45 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-22 16:45 UTC
SAP Security Patch Day - June 2026

web:support.sap.com

SAP security Patch Day Bulletin This post shares the information on security notes that remediate vulnerabilities discovered in SAP products. SAP strongly recommends that the customer visits the support portal and applies patches on priority to protect their SAP landscape. On 9th of June 2026 , SAP security patch day saw the release of 15 new security notes.

2026-09-22 16:45 UTC
CVE-2026-94571 - OpenStack Octavia L7 Policy Injection via…

web:vulmon.com

Vulnerability Summary Authenticated project members owning a load balancer in OpenStack Octavia deployments using the Amphora provider (versions prior to 18.0.1) may inject arbitrary HAProxy directives. This is possible by providing unencoded control characters, such as newlines, in the L7 policy redirect_url and redirect_prefix fields, which are then written directly into the HAProxy ...

2026-09-22 16:45 UTC
What Is CVE Remediation in 2026? - aikido.dev

web:www.aikido.dev

None of these is a clean fix , which is why the decision on how to remediate depends on knowing what package versions are running in production and why. This post will cover how AI has accelerated CVE detection and discovery, the upgrade trap, what CVE remediation actually involves in 2026 , and how to solve the CVE remediation problem.

2026-09-22 16:45 UTC
The 8 Best Automated Vulnerability Remediation Tools in 2026

web:www.openhands.dev

Compare 8 automated vulnerability remediation tools for 2026 on fixes, prioritization, integrations, and deployment control.

2026-09-22 16:45 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-22 16:45 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-94571.json.

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