CVE-2022-3172Network attack vector

Credential disclosure via forwarded backend redirects

Published Nov 3, 2023 · Updated Feb 13, 2025

SSRF in Kubernetes kube-apiserver allows remote authenticated users to redirect API clients to arbitrary URLs through an aggregated server. The aggregation proxy forwarded 3XX Location responses from a registered backend instead of rejecting them, so clients followed attacker-chosen destinations with API credentials. Exploitation requires control of an aggregated API server or privileged APIService configuration plus client interaction, and it can disclose credentials or trigger unintended client actions.

CVSS severity5.1
Medium
EPSS probability2.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Kubernetes kube-apiserver allows remote authenticated users to redirect API clients to arbitrary URLs through an aggregated server. The aggregation proxy forwarded 3XX Location responses from a registered backend instead of rejecting them, so clients followed attacker-chosen destinations with API credentials. Exploitation requires control of an aggregated API server or privileged APIService configuration plus client interaction, and it can disclose credentials or trigger unintended client actions.

The record

CVE
CVE-2022-3172
Published
Nov 3, 2023
Updated
Feb 13, 2025
Vendor
Kubernetes
Product
kube-apiserver
Classifications
CWE-918
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2025Record 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=0 <=v1.21.14
  2. Affected versionversion=v1.22.0 <=v1.22.13
  3. Affected versionversion=v1.23.0 <=v1.23.10
  4. Affected versionversion=v1.24.0 <=v1.24.4
  5. Affected versionversion=v1.25.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Kubernetes · kube-apiserverversion=0 <=v1.21.14; version=v1.22.0 <=v1.22.13; version=v1.23.0 <=v1.23.10; version=v1.24.0 <=v1.24.4; version=v1.25.0

Published CVSS scores

8.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
5.1KubernetesCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
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.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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