CVE-2026-101916 (GCVE-0-2026-101916)

Vulnerability from cvelistv5 – Published: 2026-09-28 20:01 – Updated: 2026-09-28 20:01
VLAI
Title
@grpc/grpc-js: In certain configurations, getAuthContext can return unauthorized certificates as though they were authorized
Summary
@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.6 and 1.14.5, getAuthContext does not distinguish authorized from unauthorized peer certificates when server credentials set requireClientCertificate to false. When applications use the returned authentication context, they can treat an unauthorized certificate as authorized, causing improper authentication. @grpc/grpc-js-xds can reach this condition when RBAC authentication is enabled in affected configurations. This issue is fixed in version 1.14.5 and 1.13.6.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
Vendor Product Version CPE status
grpc grpc-node Affected: < 1.13.6
Affected: >= 1.14.0, < 1.14.5
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "grpc-node",
          "vendor": "grpc",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.13.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.14.0, \u003c 1.14.5"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.6 and 1.14.5, getAuthContext does not distinguish authorized from unauthorized peer certificates when server credentials set requireClientCertificate to false. When applications use the returned authentication context, they can treat an unauthorized certificate as authorized, causing improper authentication. @grpc/grpc-js-xds can reach this condition when RBAC authentication is enabled in affected configurations. This issue is fixed in version 1.14.5 and 1.13.6."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-295",
              "description": "CWE-295: Improper Certificate Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-28T20:01:53.640Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/grpc/grpc-node/security/advisories/GHSA-m9gg-hp2v-232j",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/grpc/grpc-node/security/advisories/GHSA-m9gg-hp2v-232j"
        },
        {
          "name": "https://github.com/grpc/grpc-node/commit/2a84ec8b01b9db68ed9d2b117a53a81449edb8ee",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/grpc/grpc-node/commit/2a84ec8b01b9db68ed9d2b117a53a81449edb8ee"
        },
        {
          "name": "https://github.com/grpc/grpc-node/commit/b4e0079c6d22a2adedfcac748e0bc083f783bc7c",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/grpc/grpc-node/commit/b4e0079c6d22a2adedfcac748e0bc083f783bc7c"
        },
        {
          "name": "https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js%401.14.5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js%401.14.5"
        }
      ],
      "source": {
        "advisory": "GHSA-m9gg-hp2v-232j",
        "discovery": "UNKNOWN"
      },
      "title": "@grpc/grpc-js: In certain configurations, getAuthContext can return unauthorized certificates as though they were authorized"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-101916",
    "datePublished": "2026-09-28T20:01:53.640Z",
    "dateReserved": "2026-09-28T15:55:37.907Z",
    "dateUpdated": "2026-09-28T20:01:53.640Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-101916",
      "date": "2026-09-30",
      "epss": "0.00208",
      "percentile": "0.09768"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "grpc-node",
                "vendor": "grpc",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.13.6"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 1.14.0, \u003c 1.14.5"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.6 and 1.14.5, getAuthContext does not distinguish authorized from unauthorized peer certificates when server credentials set requireClientCertificate to false. When applications use the returned authentication context, they can treat an unauthorized certificate as authorized, causing improper authentication. @grpc/grpc-js-xds can reach this condition when RBAC authentication is enabled in affected configurations. This issue is fixed in version 1.14.5 and 1.13.6."
          }
        ],
        "id": "CVE-2026-101916",
        "lastModified": "2026-09-30T19:57:08.043",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 7.4,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.2,
              "impactScore": 5.2,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-09-28T21:17:13.030",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/grpc/grpc-node/commit/2a84ec8b01b9db68ed9d2b117a53a81449edb8ee"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/grpc/grpc-node/commit/b4e0079c6d22a2adedfcac748e0bc083f783bc7c"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js%401.14.5"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/grpc/grpc-node/security/advisories/GHSA-m9gg-hp2v-232j"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-295"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-09-29T05:32:10+00:00",
      "cve": "CVE-2026-101916",
      "id": "CVE-2026-101916",
      "initial_release_date": "2026-09-28T20:01:53.640000+00:00",
      "product_status:known_affected": "9",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "grpc-js: grpc-js: Authentication bypass via improper peer certificate validation",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101916.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



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.