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CVE-2026-94571

Quick assessment

Affected

OpenStack Octavia

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 OpenStack Octavia 18.0.1 之前的版本中，Amphora 提供商驱动程序未拒绝 L7 策略中和字段中的控制字符。RFC 3986 URL 验证器在验证之前会对控制字符进行百分比编码，因此换行符等控制字符能通过结构化检查。然而，Octavia 直接将未编码的原始值存储并写入到 amphora 上生成的 HAProxy 配置文件中。因此，拥有负载均衡器的已认证项目成员可以通过 REDIRECT_TO_URL L7 策略注入任意的 HAProxy 指令。只有使用 Amphora 提供商的部署

CVSS 9.4 · Critical EPSS 0.53% · P46 Updated Sep 23, 2026

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

Vendor	Product	Version Range	Status
OpenStack	Octavia	`0.8.0< 16.1.0`	affected
		`17.0.0< 17.0.1`	affected
		`18.0.0< 18.0.1`	affected

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Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

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Vulnerability Title

N/A

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

对生成代码的控制不恰当(代码注入)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
OpenStack	Octavia	0.8.0 ~ 16.1.0	-

II. Public POCs for CVE-2026-94571

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-94571

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Mailing List Discussions for CVE-2026-94571 (1)

🔗 oss-security - [OSSA-2026-039] OpenStack Octavia: HAProxy configuration injection leading to remote code execution in Octavia (CVE-2026-pending) Read full article mailing-list

Other References for CVE-2026-94571 (5)

🔗 Bug #2162103 “[OSSA-2026-039] Octavia L7 redirect_url Permits HA...” : Bugs : octavia Read full article issue-tracking
🔗 Bug #2167565 “[OSSA-2026-039] Command Injection (RCE) on Octavia...” : Bugs : octavia Read full article issue-tracking
🔗 403 Forbidden patch
🔗 403 Forbidden vendor-advisory
🔗 #1148175 - Command Injection (RCE) on Octavia amphora via API (CVE-2026-94571, CVE-2026-94572) - Debian Bug report logs issue-tracking

https://www.cve.org/CVERecord?id=CVE-2026-94571

IV. Related Vulnerabilities

Same product: Octavia

Same vendor: OpenStack

Same weakness: CWE-94