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Fencer Vulns
high 7.1

CVE-2025-0752 json

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

published 2025-01-28 21 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-1853

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-0752 updated cvss 7.1

envoyproxy: OpenShift Service Mesh Envoy HTTP Header Sanitization Bypass Leading to DoS and Unauthorized Access

  • Red Hat OpenShift Service Mesh 2 openshift-service-mesh/proxyv2-rhel8
    affected: workaround, no fix available
  • Red Hat OpenShift Service Mesh 2 openshift-service-mesh/proxyv2-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Affected products

  • Red Hat OpenShift Service Mesh 2

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.