CVE-2025-0752

Envoyproxy: openshift service mesh envoy http header sanitization bypass leading to dos and unauthorized access

Published Jan 28, 2025 CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-1853 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.
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}

cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H'}

Type Values Removed Values Added
First Time appeared Redhat openshift Service Mesh
CPEs cpe:2.3:a:redhat:openshift_service_mesh:2.5.6:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift_service_mesh:2.6.3:*:*:*:*:*:*:*
Vendors & Products Redhat openshift Service Mesh
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title envoyproxy: OpenShift Service Mesh Envoy HTTP Header Sanitization Bypass Leading to DoS and Unauthorized Access Envoyproxy: openshift service mesh envoy http header sanitization bypass leading to dos and unauthorized access
First Time appeared Redhat
Redhat service Mesh
CPEs cpe:/a:redhat:service_mesh:2
Vendors & Products Redhat
Redhat service Mesh
References
Type Values Removed Values Added
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.
Title envoyproxy: OpenShift Service Mesh Envoy HTTP Header Sanitization Bypass Leading to DoS and Unauthorized Access
Weaknesses CWE-444
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'}

threat_severity

Moderate

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Feb 24, 2026, 8:03 AM
Reserved
Jan 27, 2025, 2:16 PM
Status
Modified
Published
Jan 28, 2025, 10:15 AM
Modified
Jun 17, 2026, 8:27 AM
Severity
Moderate
Public date
Jan 21, 2025, 12:00 AM