---
id: CVE-2026-84196
title: >-
  Kyverno before 1.18.0 contains a server-side request forgery vulnerability in
  apiCall.service.url that allows authenticated users to send arbitrary HTTP
  requests by injecting user-controlled input through variable substitution
summary: >-
  Kyverno before 1.18.0 contains a server-side request forgery vulnerability in
  apiCall.service.url that allows authenticated users to send arbitrary HTTP
  requests by injecting user-controlled input through variable substitution.
  Attackers…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
vendor: kyverno
product: github.com/kyverno/kyverno
affected:
  - github.com/kyverno/kyverno <= 1.17.1
published: '2026-09-01'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T15:43:03.760'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84196'
references:
  - url: 'https://github.com/kyverno/kyverno/security/advisories/GHSA-qr4g-8hrp-c4rw'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/kyverno-before-1.18.0-server-side-request-forgery-via-apicall
    label: disclosure@vulncheck.com
  - url: 'https://github.com/kyverno/kyverno'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84196.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-84196'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-84196'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84196'
tags:
  - nvd
  - osv
  - go
  - csaf
  - vex
  - red-hat
epss: 0.00354
epssPercentile: 0.26398
aliases:
  - GHSA-qr4g-8hrp-c4rw
  - GO-2026-5594
  - BIT-kyverno-2026-84196
ecosystem: go
ingestedAt: '2026-09-02T19:31:27.051Z'
---

## Overview

Kyverno before 1.18.0 contains a server-side request forgery vulnerability in apiCall.service.url that allows authenticated users to send arbitrary HTTP requests by injecting user-controlled input through variable substitution. Attackers can target internal services, cloud metadata endpoints, and loopback addresses, with response data reflected in admission error messages enabling non-blind data exfiltration.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-84196)

Affected packages:

- `github.com/kyverno/kyverno <= 1.17.1`

Source: https://osv.dev/vulnerability/GHSA-qr4g-8hrp-c4rw

## Vendor advisories

- **Red Hat VEX** · updated 2026-09-11 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-84196.json)