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TI-2020-06891 Aliases CVE-2020-8595GHSA-6mcc-fxc5-58cv

Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3…

Priority LOW 37CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-287.

Summary

Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.

Why it matters now

EPSS 0.02627 85th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*1.3 – 1.3.7; 1.4.0 – 1.4.3Vulnerableistio
cpe:2.3:a:redhat:openshift_service_mesh:1.0:*:*:*:*:*:*:*1.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0Running onRed Hat
  • cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:* Versions 1.3 – 1.3.7; 1.4.0 – 1.4.3 Vulnerable ·istio
  • cpe:2.3:a:redhat:openshift_service_mesh:1.0:*:*:*:*:*:*:* Versions 1.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Running on ·Red Hat

Remediation

Red Hat 1 advisory

  • RHSA-2020:0477 Released 2020-02-12 · Red Hat rating Important
    Red Hat OpenShift Service Mesh 1.0.7 servicemesh-proxy security update
    • OpenShift Service Mesh 1.0 servicemesh-proxy-1.0.7-1.el8

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
OpenShift Service Mesh 1.0Fixed RHSA-2020:0477

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-8595
  2. 2026-10-03 Alias added: GHSA-6mcc-fxc5-58cv

References

Patch 2

Advisory 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences