CVE-2026-41413 — Istio is an open platform to connect, manage, and secure
CVE-2026-41413 — Istio is an open platform to connect, manage, and secure microservices. Prior to versions 1.28.6 and 1.29.2, when a RequestAuthentication resource is created with a jwksUri pointing to an internal service, istiod makes an unauthenticated HTTP GET request to that URL without filterin
What This Means For You
- If your environment is affected by CWE-918, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41413 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Istio RequestAuthentication JWKS URI to Internal Service — CVE-2026-41413
title: Istio RequestAuthentication JWKS URI to Internal Service — CVE-2026-41413
id: scw-2026-05-07-ai-1
status: experimental
level: high
description: |
Detects Istio's istiod making unauthenticated HTTP GET requests to internal services (localhost, link-local IPs) for JWKS URIs within a RequestAuthentication resource. This is specific to CVE-2026-41413 and indicates potential sensitive data exposure to Envoy proxies.
author: SCW Feed Engine (AI-generated)
date: 2026-05-07
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-41413/
tags:
- attack.discovery
- attack.t1046
logsource:
category: webserver
detection:
selection:
cs-method:
- 'GET'
cs-uri:
- '/.well-known/jwks.json'
cs-uri-query|contains:
- 'localhost'
- '127.0.0.1'
- '169.254.'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41413 | vulnerability | CVE-2026-41413 |
| CWE-918 | weakness | CWE-918 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 07, 2026 at 09:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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