CVE-2026-91163 (GCVE-0-2026-91163)

Vulnerability from cvelistv5 – Published: 2026-11-04 15:19 – Updated: 2026-11-04 15:19
VLAI
Title
Warpgate: Kubernetes listener discloses internal error text to an unauthenticated caller
Summary
Warpgate is an open source SSH, HTTPS, and MySQL bastion host for Linux. Prior to 0.29.0, the Kubernetes protocol listener uses AcceptAnyClientCert in warpgate-protocol-kubernetes/src/server/client_certs.rs to accept certificates at the TLS layer and defer validation to warpgate-protocol-kubernetes/src/server/auth.rs, where authentication and lookup failures are rendered verbatim in an HTTP 500 response body. The Kubernetes application in warpgate-protocol-kubernetes/src/server/mod.rs lacks the outer request-logging wrapper used by the HTTP protocol, and failures in warpgate-protocol-kubernetes/src/server/handlers.rs can short-circuit before its inner log point. An unauthenticated network client can therefore induce failures and receive ASN.1/DER parser diagnostics or sea_orm database errors without the attempt being recorded in the gateway log. The disclosed information is limited to internal diagnostics, and no user-data, integrity, or availability impact is established. This issue is fixed in version 0.29.0.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-209 - Generation of Error Message Containing Sensitive Information
  • CWE-532 - Insertion of Sensitive Information into Log File
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7913 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
warp-tech warpgate Affected: < 0.29.0
guessed Create a notification for this product.
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "warpgate",
          "vendor": "warp-tech",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.29.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Warpgate is an open source SSH, HTTPS, and MySQL bastion host for Linux. Prior to 0.29.0, the Kubernetes protocol listener uses AcceptAnyClientCert in warpgate-protocol-kubernetes/src/server/client_certs.rs to accept certificates at the TLS layer and defer validation to warpgate-protocol-kubernetes/src/server/auth.rs, where authentication and lookup failures are rendered verbatim in an HTTP 500 response body. The Kubernetes application in warpgate-protocol-kubernetes/src/server/mod.rs lacks the outer request-logging wrapper used by the HTTP protocol, and failures in warpgate-protocol-kubernetes/src/server/handlers.rs can short-circuit before its inner log point. An unauthenticated network client can therefore induce failures and receive ASN.1/DER parser diagnostics or sea_orm database errors without the attempt being recorded in the gateway log. The disclosed information is limited to internal diagnostics, and no user-data, integrity, or availability impact is established. This issue is fixed in version 0.29.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.7,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-209",
              "description": "CWE-209: Generation of Error Message Containing Sensitive Information",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-532",
              "description": "CWE-532: Insertion of Sensitive Information into Log File",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-04T15:19:15.511Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/warp-tech/warpgate/security/advisories/GHSA-hrfx-fm67-gv64",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/warp-tech/warpgate/security/advisories/GHSA-hrfx-fm67-gv64"
        },
        {
          "name": "https://github.com/warp-tech/warpgate/pull/2547",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/warp-tech/warpgate/pull/2547"
        },
        {
          "name": "https://github.com/warp-tech/warpgate/commit/8426196a27c30fca521656653f9df1faf3df7523",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/warp-tech/warpgate/commit/8426196a27c30fca521656653f9df1faf3df7523"
        },
        {
          "name": "https://github.com/warp-tech/warpgate/releases/tag/v0.29.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/warp-tech/warpgate/releases/tag/v0.29.0"
        }
      ],
      "source": {
        "advisory": "GHSA-hrfx-fm67-gv64",
        "discovery": "UNKNOWN"
      },
      "title": "Warpgate: Kubernetes listener discloses internal error text to an unauthenticated caller"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-91163",
    "datePublished": "2026-11-04T15:19:15.511Z",
    "dateReserved": "2026-09-14T21:20:41.196Z",
    "dateUpdated": "2026-11-04T15:19:15.511Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "warpgate",
                "vendor": "warp-tech",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 0.29.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Warpgate is an open source SSH, HTTPS, and MySQL bastion host for Linux. Prior to 0.29.0, the Kubernetes protocol listener uses AcceptAnyClientCert in warpgate-protocol-kubernetes/src/server/client_certs.rs to accept certificates at the TLS layer and defer validation to warpgate-protocol-kubernetes/src/server/auth.rs, where authentication and lookup failures are rendered verbatim in an HTTP 500 response body. The Kubernetes application in warpgate-protocol-kubernetes/src/server/mod.rs lacks the outer request-logging wrapper used by the HTTP protocol, and failures in warpgate-protocol-kubernetes/src/server/handlers.rs can short-circuit before its inner log point. An unauthenticated network client can therefore induce failures and receive ASN.1/DER parser diagnostics or sea_orm database errors without the attempt being recorded in the gateway log. The disclosed information is limited to internal diagnostics, and no user-data, integrity, or availability impact is established. This issue is fixed in version 0.29.0."
          }
        ],
        "id": "CVE-2026-91163",
        "lastModified": "2026-11-04T16:17:54.847",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 3.7,
                "baseSeverity": "LOW",
                "confidentialityImpact": "LOW",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 1.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-11-04T16:17:54.543",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/warp-tech/warpgate/commit/8426196a27c30fca521656653f9df1faf3df7523"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/warp-tech/warpgate/pull/2547"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/warp-tech/warpgate/releases/tag/v0.29.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/warp-tech/warpgate/security/advisories/GHSA-hrfx-fm67-gv64"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-209"
              },
              {
                "lang": "en",
                "value": "CWE-532"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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