CVE-2026-41413Network attack vector

Internal data disclosure via unfiltered jwksUri fetch

Published May 7, 2026 · Updated May 7, 2026

SSRF in istiod in Istio before 1.28.6 and 1.29.0-alpha.0 through 1.29.1 allows remote authenticated users to read internal data. istiod accepts a RequestAuthentication jwksUri without rejecting localhost or link-local addresses, then performs an unauthenticated HTTP GET and distributes returned data to Envoy proxies through xDS. Exploitation requires permission to create RequestAuthentication resources; it discloses data reachable from the control plane without changing or interrupting it.

CVSS severity5.0
Medium
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in istiod in Istio before 1.28.6 and 1.29.0-alpha.0 through 1.29.1 allows remote authenticated users to read internal data. istiod accepts a RequestAuthentication jwksUri without rejecting localhost or link-local addresses, then performs an unauthenticated HTTP GET and distributes returned data to Envoy proxies through xDS. Exploitation requires permission to create RequestAuthentication resources; it discloses data reachable from the control plane without changing or interrupting it.

The record

CVE
CVE-2026-41413
Published
May 7, 2026
Updated
May 7, 2026
Vendor
Istio
Product
Istio
Classifications
CWE-918
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 7, 2026CVE publishedPublication date reported by the CVE source.
  2. May 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.28.6
  2. Affected versionversion=>= 1.29.0-alpha.0, < 1.29.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Istio · Istioversion=< 1.28.6; version=>= 1.29.0-alpha.0, < 1.29.2

Published CVSS scores

5.0GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
7.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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