Vulnerability-Lookup

GHSA-Q5V3-PP68-6CRJ

Vulnerability from github – Published: 2026-09-01 12:31 – Updated: 2026-09-01 12:31

Details

Kyverno before 1.16.2 contains a server-side request forgery (SSRF) vulnerability in the APICall feature. The URL field in a Policy's ServiceCall configuration is not validated, so a user with namespace-level Policy creation permissions can direct Kyverno to make HTTP requests to arbitrary internal resources (e.g., cloud metadata endpoints such as 169.254.169.254 or other tenants' resources). Because Kyverno executes these requests using its cluster-wide high-privilege ServiceAccount (a Confused Deputy problem), the responses—potentially including other tenants' secrets and cloud IAM credentials—are returned in the PolicyReport and can be read by the attacker, breaking multi-tenant isolation.

Severity

7.7 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

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{
  "affected": [],
  "aliases": [
    "CVE-2026-84199"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-918"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-01T12:17:49Z",
    "severity": "MODERATE"
  },
  "details": "Kyverno before 1.16.2 contains a server-side request forgery (SSRF) vulnerability in the APICall feature. The URL field in a Policy\u0027s ServiceCall configuration is not validated, so a user with namespace-level Policy creation permissions can direct Kyverno to make HTTP requests to arbitrary internal resources (e.g., cloud metadata endpoints such as 169.254.169.254 or other tenants\u0027 resources). Because Kyverno executes these requests using its cluster-wide high-privilege ServiceAccount (a Confused Deputy problem), the responses\u2014potentially including other tenants\u0027 secrets and cloud IAM credentials\u2014are returned in the PolicyReport and can be read by the attacker, breaking multi-tenant isolation.",
  "id": "GHSA-q5v3-pp68-6crj",
  "modified": "2026-09-01T12:31:51Z",
  "published": "2026-09-01T12:31:51Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kyverno/kyverno/security/advisories/GHSA-fmqp-4wfc-w3v7"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84199"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/kyverno-before-1.16.2-ssrf-via-apicall-feature"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-84199 (GCVE-0-2026-84199)

Vulnerability from cvelistv5 – Published: 2026-09-01 11:33 – Updated: 2026-09-01 15:26

Title

Kyverno before 1.16.2 SSRF via APICall Feature

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L

7.7 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-01 15:25 UTC

CWE

CWE-918 - Server-Side Request Forgery (SSRF)

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/kyverno/kyverno/security/advis…	vendor-advisory
https://www.vulncheck.com/advisories/kyverno-befo…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
kyverno	kyverno	Affected: 0 , < 1.16.2 (semver) Unaffected: 1.16.2 (semver) cpe:2.3:a:kyverno:kyverno::::::::

Date Public

2026-04-13 00:00

Credits

b0b0haha j311yl0v3u

Show details on NVD website

JSON

To clipboard

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      {
        "metrics": [
          {
            "other": {
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                "id": "CVE-2026-84199",
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                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-01T15:25:47.520857Z",
                "version": "2.0.3"
              },
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        "providerMetadata": {
          "dateUpdated": "2026-09-01T15:26:07.044Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "references": [
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            "tags": [
              "exploit"
            ],
            "url": "https://github.com/kyverno/kyverno/security/advisories/GHSA-fmqp-4wfc-w3v7"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "vendor": "kyverno",
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              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "1.16.2",
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      ],
      "cpeApplicability": [
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      "metrics": [
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    "dateReserved": "2026-09-01T11:03:27.972Z",
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    "state": "PUBLISHED"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-Q5V3-PP68-6CRJ

CVE-2026-84199 (GCVE-0-2026-84199)

Tags

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Nomenclature

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