CVE-2026-105941 (GCVE-0-2026-105941)

Vulnerability from cvelistv5 – Published: 2026-10-20 12:59 – Updated: 2026-10-20 22:34
VLAI
Title
Kroxylicious-kms-provider-azure-key-vault-kms: streams for apache kafka kroxylicious: azure key vault ssrf exfiltrates bearer token via untrusted edek vaultname
Summary
The Azure Key Vault KMS provider in Kroxylicious accepts an untrusted vaultName from wire-deserialized EDEK bytes without format validation, enabling SSRF that exfiltrates the proxy's Azure bearer token to an attacker-controlled host. Token replay against the real Key Vault defeats the entire record-encryption trust model.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 13:40 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1036 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
Red Hat streams for Apache Kafka 3     cpe:/a:redhat:amq_streams:3
Create a notification for this product.
Date Public
2026-10-20 11:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-105941",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-20T13:40:26.106666Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-20T13:40:36.464Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:amq_streams:3"
          ],
          "defaultStatus": "affected",
          "packageName": "kroxylicious-kms-provider-azure-key-vault-kms",
          "product": "streams for Apache Kafka 3",
          "vendor": "Red Hat"
        }
      ],
      "datePublic": "2026-10-20T11:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The Azure Key Vault KMS provider in Kroxylicious accepts an untrusted vaultName from wire-deserialized EDEK bytes without format validation, enabling SSRF that exfiltrates the proxy\u0027s Azure bearer token to an attacker-controlled host. Token replay against the real Key Vault defeats the entire record-encryption trust model."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "namespace": "https://access.redhat.com/security/updates/classification/",
              "value": "Important"
            },
            "type": "Red Hat severity rating"
          }
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-20T22:34:19.300Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
      },
      "references": [
        {
          "tags": [
            "vdb-entry",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/security/cve/CVE-2026-105941"
        },
        {
          "name": "RHBZ#2510876",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510876"
        },
        {
          "url": "https://github.com/kroxylicious/kroxylicious/commit/aa1b02a5f8e5bb5003f88b3160a811019cd11139"
        },
        {
          "url": "https://github.com/kroxylicious/kroxylicious/security/advisories/GHSA-5j25-p663-ww5r"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-04T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-10-20T11:00:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Kroxylicious-kms-provider-azure-key-vault-kms: streams for apache kafka kroxylicious: azure key vault ssrf exfiltrates bearer token via untrusted edek vaultname",
      "workarounds": [
        {
          "lang": "en",
          "value": "1. Restrict outbound network access \u2014 use Kubernetes NetworkPolicy to limit proxy pod egress to only legitimate Azure Key Vault endpoints on port 443.\n2. Monitor KMS call patterns \u2014 alert on unwrap requests targeting unexpected vault hostnames.\n\n--- CME Mitigation Guidance (2026-10-20) ---\nDisclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure.\n\nThe highest-value action is to enforce strict allowlist regex validation on wire-deserialized vaultName in the Azure Key Vault KMS provider before constructing outbound HTTP endpoints: upgrade to kroxylicious-kms-provider-azure-key-vault-kms 0.25.1+ (or the fixed Kroxylicious Kms Provider Azure Key Vault Kms builds), which validate Key Vault name using validateKeyVaultName to reject names containing dots, URL fragments, invalid lengths, or malformed hyphens before constructing the Key Vault URL, closing all 2 injection vectors (crafted EDEK containing an arbitrary hostname in vaultName, vaultName URL fragment injection). Until patched, this is a concern on Kafka clusters using the Kroxylicious Record Encryption filter with Azure Key Vault KMS, so restrict proxy pod outbound network egress using Kubernetes NetworkPolicy strictly to legitimate Azure Key Vault endpoints on port 443 and alert on unwrap requests targeting unexpected vault hostnames. As a compensating measure, Deploy Falco or eBPF runtime security to detect anomalous outbound network connections initiated by the Kroxylicious proxy process to unexpected destinations. These controls limit blast radius and contain exploitation, but they do not fix the underlying unvalidated input SSRF defect \u2014 apply the upstream patch to fully remediate.\n\nHighest-impact CME: CME-1315 Allowlist-Preferred Input Validation (Deny-by-Default Filtering) (high)"
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-918: Server-Side Request Forgery (SSRF)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-105941",
    "datePublished": "2026-10-20T12:59:00.134Z",
    "dateReserved": "2026-10-06T07:03:52.238Z",
    "dateUpdated": "2026-10-20T22:34:19.300Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                "cpes": [
                  "cpe:/a:redhat:amq_streams:3"
                ],
                "defaultStatus": "affected",
                "packageName": "kroxylicious-kms-provider-azure-key-vault-kms",
                "product": "streams for Apache Kafka 3",
                "vendor": "Red Hat"
              }
            ],
            "source": "secalert@redhat.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The Azure Key Vault KMS provider in Kroxylicious accepts an untrusted vaultName from wire-deserialized EDEK bytes without format validation, enabling SSRF that exfiltrates the proxy\u0027s Azure bearer token to an attacker-controlled host. Token replay against the real Key Vault defeats the entire record-encryption trust model."
          }
        ],
        "id": "CVE-2026-105941",
        "lastModified": "2026-10-20T20:17:12.970",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 5.2,
              "source": "secalert@redhat.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-105941",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-20T13:40:26.106666Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-10-20T13:16:39.457",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "https://access.redhat.com/security/cve/CVE-2026-105941"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510876"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://github.com/kroxylicious/kroxylicious/commit/aa1b02a5f8e5bb5003f88b3160a811019cd11139"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://github.com/kroxylicious/kroxylicious/security/advisories/GHSA-5j25-p663-ww5r"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-918"
              }
            ],
            "source": "secalert@redhat.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-10-20T22:34:12+00:00",
      "cve": "CVE-2026-105941",
      "id": "CVE-2026-105941",
      "initial_release_date": "2026-10-20T11:00:00+00:00",
      "product_status:known_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kroxylicious-kms-provider-azure-key-vault-kms: Streams for Apache Kafka Kroxylicious: Azure Key Vault SSRF exfiltrates bearer token via untrusted EDEK vaultName",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-105941.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-105941",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-20T13:40:26.106666Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-20T13:40:31.659Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
              "cpes": [
                "cpe:/a:redhat:amq_streams:3"
              ],
              "defaultStatus": "affected",
              "packageName": "kroxylicious-kms-provider-azure-key-vault-kms",
              "product": "streams for Apache Kafka 3",
              "vendor": "Red Hat"
            }
          ],
          "datePublic": "2026-10-20T11:00:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "value": "The Azure Key Vault KMS provider in Kroxylicious accepts an untrusted vaultName from wire-deserialized EDEK bytes without format validation, enabling SSRF that exfiltrates the proxy\u0027s Azure bearer token to an attacker-controlled host. Token replay against the real Key Vault defeats the entire record-encryption trust model."
            }
          ],
          "metrics": [
            {
              "other": {
                "content": {
                  "namespace": "https://access.redhat.com/security/updates/classification/",
                  "value": "Important"
                },
                "type": "Red Hat severity rating"
              }
            },
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 8.1,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "format": "CVSS"
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-918",
                  "description": "Server-Side Request Forgery (SSRF)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-20T12:59:00.134Z",
            "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
            "shortName": "redhat"
          },
          "references": [
            {
              "tags": [
                "vdb-entry",
                "x_refsource_REDHAT"
              ],
              "url": "https://access.redhat.com/security/cve/CVE-2026-105941"
            },
            {
              "name": "RHBZ#2510876",
              "tags": [
                "issue-tracking",
                "x_refsource_REDHAT"
              ],
              "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510876"
            }
          ],
          "timeline": [
            {
              "lang": "en",
              "time": "2026-08-04T00:00:00.000Z",
              "value": "Reported to Red Hat."
            },
            {
              "lang": "en",
              "time": "2026-10-20T11:00:00.000Z",
              "value": "Made public."
            }
          ],
          "title": "Kroxylicious-kms-provider-azure-key-vault-kms: streams for apache kafka kroxylicious: azure key vault ssrf exfiltrates bearer token via untrusted edek vaultname",
          "workarounds": [
            {
              "lang": "en",
              "value": "1. Bind all topics to KEKs \u2014 remove PASSTHROUGH_UNENCRYPTED as unresolvedKeyPolicy. Explicitly configure kekSelector to match every topic.\n2. Restrict outbound network access \u2014 use Kubernetes NetworkPolicy to limit proxy pod egress to only legitimate Azure Key Vault endpoints on port 443.\n3. Monitor KMS call patterns \u2014 alert on unwrap requests targeting unexpected vault hostnames."
            }
          ],
          "x_generator": {
            "engine": "cvelib 1.8.0"
          },
          "x_redhatCweChain": "CWE-918: Server-Side Request Forgery (SSRF)"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "assignerShortName": "redhat",
        "cveId": "CVE-2026-105941",
        "datePublished": "2026-10-20T12:59:00.134Z",
        "dateReserved": "2026-10-06T07:03:52.238Z",
        "dateUpdated": "2026-10-20T13:40:36.464Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
Events included in the timeline

Loading timeline…


    Loading…

    Loading…

    Loading…

    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.