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CVE-2025-0752— Envoyproxy: openshift service mesh envoy http header sanitization bypass leading to dos and unauthorized access

Quick assessment

Affected
Red Hat OpenShift Service Mesh 2
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.

Red Hat OpenShift Service Mesh是美国红帽（Red Hat）公司的一套用于连接、管理和监视基于微服务的应用程序的平台。 Red Hat OpenShift Service Mesh 2.6.3版本和2.5.6版本存在环境问题漏洞，该漏洞源于Envoy不正确的HTTP头处理，导致速率限制器规避、访问控制绕过等问题。

CVSS 7.1 · High EPSS 0.41% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-0752

Vulnerability Information
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Vulnerability Title
Envoyproxy: openshift service mesh envoy http header sanitization bypass leading to dos and unauthorized access
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in OpenShift Service Mesh 2.6.3 and 2.5.6. Rate-limiter avoidance, access-control bypass, CPU and memory exhaustion, and replay attacks may be possible due to improper HTTP header sanitization in Envoy.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat OpenShift Service Mesh 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat OpenShift Service Mesh是美国红帽（Red Hat）公司的一套用于连接、管理和监视基于微服务的应用程序的平台。 Red Hat OpenShift Service Mesh 2.6.3版本和2.5.6版本存在环境问题漏洞，该漏洞源于Envoy不正确的HTTP头处理，导致速率限制器规避、访问控制绕过等问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat OpenShift Service Mesh 2 - cpe:/a:redhat:service_mesh:2
Red Hat OpenShift Service Mesh 2 - cpe:/a:redhat:service_mesh:2

II. Public POCs for CVE-2025-0752

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III. Intelligence Information for CVE-2025-0752

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Vendor Advisories for CVE-2025-0752 (1)

IV. Related Vulnerabilities

Same weakness: CWE-444