Vulnerability-Lookup

CVE-2026-44902 (GCVE-0-2026-44902)

Vulnerability from cvelistv5 – Published: 2026-05-27 14:49 – Updated: 2026-05-28 15:26

Title

opentelemetry-js: Prometheus exporter process crash via malformed HTTP request

Summary

opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 0.217.0, a single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default 0.0.0.0:9464) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught TypeError that terminates the process. This vulnerability is fixed in 0.217.0.

Severity

7.5 (High)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-28 15:26 UTC

CWE

CWE-755 - Improper Handling of Exceptional Conditions

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/open-telemetry/opentelemetry-j…	x_refsource_CONFIRM

Impacted products

4 products

Vendor	Product	Version	CPE status
open-telemetry	opentelemetry-js	Affected: < 0.217.0	guessed
@opentelemetry	exporter-prometheus	Affected: < 0.217.0	guessed
@opentelemetry	sdk-node	Affected: < 0.217.0	guessed
@opentelemetry	auto-instrumentations-node	Affected: < 0.75.0	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44902",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-28T15:26:02.547148Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-28T15:26:13.701Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "opentelemetry-js",
          "vendor": "open-telemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.217.0"
            }
          ]
        },
        {
          "product": "exporter-prometheus",
          "vendor": "@opentelemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.217.0"
            }
          ]
        },
        {
          "product": "sdk-node",
          "vendor": "@opentelemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.217.0"
            }
          ]
        },
        {
          "product": "auto-instrumentations-node",
          "vendor": "@opentelemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.75.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 0.217.0, a single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default 0.0.0.0:9464) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught TypeError that terminates the process. This vulnerability is fixed in 0.217.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-755",
              "description": "CWE-755: Improper Handling of Exceptional Conditions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T14:49:04.940Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
        }
      ],
      "source": {
        "advisory": "GHSA-q7rr-3cgh-j5r3",
        "discovery": "UNKNOWN"
      },
      "title": "opentelemetry-js: Prometheus exporter process crash via malformed HTTP request"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44902",
    "datePublished": "2026-05-27T14:49:04.940Z",
    "dateReserved": "2026-05-07T21:50:33.547Z",
    "dateUpdated": "2026-05-28T15:26:13.701Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-44902",
      "date": "2026-09-25",
      "epss": "0.00486",
      "percentile": "0.39295"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "opentelemetry-js",
                "vendor": "open-telemetry",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 0.217.0"
                  }
                ]
              },
              {
                "product": "exporter-prometheus",
                "vendor": "@opentelemetry",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 0.217.0"
                  }
                ]
              },
              {
                "product": "sdk-node",
                "vendor": "@opentelemetry",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 0.217.0"
                  }
                ]
              },
              {
                "product": "auto-instrumentations-node",
                "vendor": "@opentelemetry",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 0.75.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:a:opentelemetry:opentelemetry\\/auto-instrumentations-node:*:*:*:*:*:node.js:*:*",
                    "matchCriteriaId": "1B4BB76E-A709-46B7-A59F-C08DF82C6FB2",
                    "versionEndExcluding": "0.75.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:opentelemetry:opentelemetry\\/exporter-prometheus:*:*:*:*:*:node.js:*:*",
                    "matchCriteriaId": "BA127270-141A-48A6-A514-A172019CAD3D",
                    "versionEndExcluding": "0.217.0",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:opentelemetry:opentelemetry\\/sdk-node:*:*:*:*:*:node.js:*:*",
                    "matchCriteriaId": "82732B3A-AF85-4784-AC64-4A9D8C586B20",
                    "versionEndExcluding": "0.217.0",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 0.217.0, a single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default 0.0.0.0:9464) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught TypeError that terminates the process. This vulnerability is fixed in 0.217.0."
          }
        ],
        "id": "CVE-2026-44902",
        "lastModified": "2026-08-27T16:16:49.810",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 3.6,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-44902",
                "options": [
                  {
                    "exploitation": "poc"
                  },
                  {
                    "automatable": "yes"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-28T15:26:02.547148Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-05-27T15:16:29.313",
        "references": [
          {
            "source": "security-advisories@github.com",
            "tags": [
              "Exploit",
              "Vendor Advisory"
            ],
            "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
          },
          {
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "tags": [
              "Exploit",
              "Vendor Advisory"
            ],
            "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-755"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-06T18:20:08+00:00",
      "cve": "CVE-2026-44902",
      "id": "CVE-2026-44902",
      "initial_release_date": "2026-05-27T14:49:04.940000+00:00",
      "product_status:fixed": "2",
      "product_status:known_not_affected": "7",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "opentelemetry-js: opentelemetry/exporter-prometheus: opentelemetry-js: Denial of Service via malformed HTTP request",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44902.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-44902",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-05-28T15:26:02.547148Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-05-28T15:25:57.484Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "opentelemetry-js",
              "vendor": "open-telemetry",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 0.217.0"
                }
              ]
            },
            {
              "product": "exporter-prometheus",
              "vendor": "@opentelemetry",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 0.217.0"
                }
              ]
            },
            {
              "product": "sdk-node",
              "vendor": "@opentelemetry",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 0.217.0"
                }
              ]
            },
            {
              "product": "auto-instrumentations-node",
              "vendor": "@opentelemetry",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 0.75.0"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 0.217.0, a single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default 0.0.0.0:9464) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught TypeError that terminates the process. This vulnerability is fixed in 0.217.0."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 7.5,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-755",
                  "description": "CWE-755: Improper Handling of Exceptional Conditions",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-27T14:49:04.940Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
            }
          ],
          "source": {
            "advisory": "GHSA-q7rr-3cgh-j5r3",
            "discovery": "UNKNOWN"
          },
          "title": "opentelemetry-js: Prometheus exporter process crash via malformed HTTP request"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-44902",
        "datePublished": "2026-05-27T14:49:04.940Z",
        "dateReserved": "2026-05-07T21:50:33.547Z",
        "dateUpdated": "2026-05-28T15:26:13.701Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-44902

Vulnerability from fkie_nvd - Published: 2026-05-27 15:16 - Updated: 2026-08-27 16:16

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3	Exploit, Vendor Advisory
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3	Exploit, Vendor Advisory

Impacted products

Vendor	Product	Version
opentelemetry	opentelemetry\/auto-instrumentations-node	*
opentelemetry	opentelemetry\/exporter-prometheus	*
opentelemetry	opentelemetry\/sdk-node	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "opentelemetry-js",
          "vendor": "open-telemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.217.0"
            }
          ]
        },
        {
          "product": "exporter-prometheus",
          "vendor": "@opentelemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.217.0"
            }
          ]
        },
        {
          "product": "sdk-node",
          "vendor": "@opentelemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.217.0"
            }
          ]
        },
        {
          "product": "auto-instrumentations-node",
          "vendor": "@opentelemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.75.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:opentelemetry:opentelemetry\\/auto-instrumentations-node:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "1B4BB76E-A709-46B7-A59F-C08DF82C6FB2",
              "versionEndExcluding": "0.75.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:opentelemetry:opentelemetry\\/exporter-prometheus:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "BA127270-141A-48A6-A514-A172019CAD3D",
              "versionEndExcluding": "0.217.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:opentelemetry:opentelemetry\\/sdk-node:*:*:*:*:*:node.js:*:*",
              "matchCriteriaId": "82732B3A-AF85-4784-AC64-4A9D8C586B20",
              "versionEndExcluding": "0.217.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "opentelemetry-js is the OpenTelemetry JavaScript Client. Prior to 0.217.0, a single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default 0.0.0.0:9464) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught TypeError that terminates the process. This vulnerability is fixed in 0.217.0."
    }
  ],
  "id": "CVE-2026-44902",
  "lastModified": "2026-08-27T16:16:49.810",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-44902",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-28T15:26:02.547148Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-27T15:16:29.313",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-755"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-Q7RR-3CGH-J5R3

Vulnerability from github – Published: 2026-05-11 14:42 – Updated: 2026-06-08 23:42

Summary

Prometheus exporter process crash via malformed HTTP request

Details

Summary

A single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default 0.0.0.0:9464) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught TypeError that terminates the process.

You are affected by this vulnerability if either of the following apply to your application:

you directly use @opentelemetry/exporter-prometheus in your code through its built-in server.
your OTEL_METRICS_EXPORTER environment variable includes prometheus AND
you use @opentelemetry/sdk-node
you use @opentelemetry/auto-instrumentations-node via --require @opentelemetry/auto-instrumentations-node/register/--import @opentelemetry/auto-instrumentations-node/register

Impact

Denial of service. Any application using the OpenTelemetry Prometheus exporter’s built-in server can be crashed by a single unauthenticated network packet sent to the metrics port. No authentication, special privileges, or prior access is required.

Remediation

Update to the fixed version

Update @opentelemetry/exporter-prometheus and @opentelemetry/sdk-node to version 0.217.0 or later. Update @opentelemetry/auto-instrumentations-node to version 0.75.0 or later.

This release adds proper error handling around the URL constructor, returning an HTTP 400 response on parse failure rather than allowing the exception to propagate and crash the process.

npm install @opentelemetry/exporter-prometheus@latest

Do Not Expose the Endpoint to Untrusted Users

[!IMPORTANT] The following mitigations reduce exposure but do not fully remediate the vulnerability. Any client that can reach the metrics endpoint - including your own Prometheus scraper host if compromised - could still trigger the crash. Updating to 0.217.0 is the recommended resolution.

If updating is not immediately feasible, restrict access to the metrics endpoint so that it is not reachable by untrusted or unauthenticated network clients. For example:

Bind to localhost only by setting the host option to 127.0.0.1 when configuring the PrometheusExporter, so the port is not exposed on public or shared network interfaces
Use a firewall or network policy to restrict access to port 9464 (or whichever port you have configured) to only trusted Prometheus scrape hosts
Place the endpoint behind a reverse proxy that filters or validates incoming requests before they reach the exporter

Details

In PrometheusExporter.ts, the _requestHandler calls new URL(request.url, this._baseUrl) without any error handling. Node's HTTP parser accepts absolute-form URIs (e.g. http://) for proxy compatibility, including malformed ones. When request.url is "http://", the URL constructor throws TypeError: Invalid URL. Since there is no try-catch in the handler, the exception propagates as an uncaught exception and crashes the process.

The Prometheus metrics endpoint is unauthenticated by design (Prometheus scrapes it) and binds to 0.0.0.0 by default, meaning it is reachable by any network client that can connect to the metrics port.

Proof of Concept

Start any Node.js application with the Prometheus exporter running on the default port 9464, then send a single raw TCP packet:

echo -ne 'GET http:// HTTP/1.1\r\nHost: localhost\r\n\r\n' | nc localhost 9464

The process crashes immediately with:

TypeError: Invalid URL
    at new URL (...)
    at PrometheusExporter._requestHandler (...)

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@opentelemetry/exporter-prometheus"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.217.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@opentelemetry/sdk-node"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.217.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@opentelemetry/auto-instrumentations-node"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.75.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44902"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-755"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T14:42:10Z",
    "nvd_published_at": "2026-05-27T15:16:29Z",
    "severity": "HIGH"
  },
  "details": "## Summary\n\nA single malformed HTTP request crashes any Node.js process running the OpenTelemetry JS Prometheus exporter. The metrics endpoint (default `0.0.0.0:9464`) has no error handling around URL parsing, so a request with an invalid URI causes an uncaught `TypeError` that terminates the process.\n\n**You are affected by this vulnerability if either of the following apply to your application:**\n\n* you directly use `@opentelemetry/exporter-prometheus` in your code through its built-in server.\n* your `OTEL_METRICS_EXPORTER` environment variable includes `prometheus` **AND**\n  * you use `@opentelemetry/sdk-node`\n  * you use  `@opentelemetry/auto-instrumentations-node` via `--require @opentelemetry/auto-instrumentations-node/register`/`--import @opentelemetry/auto-instrumentations-node/register`\n\n## Impact\n\n**Denial of service.** Any application using the OpenTelemetry Prometheus exporter\u2019s built-in server can be crashed by a single unauthenticated network packet sent to the metrics port. No authentication, special privileges, or prior access is required.\n\n## Remediation\n\n### Update to the fixed version\n\nUpdate `@opentelemetry/exporter-prometheus` and `@opentelemetry/sdk-node` to version **0.217.0** or later. \nUpdate `@opentelemetry/auto-instrumentations-node` to version **0.75.0** or later.\n\nThis release adds proper error handling around the URL constructor, returning an HTTP `400` response on parse failure rather than allowing the exception to propagate and crash the process.\n\n```\nnpm install @opentelemetry/exporter-prometheus@latest\n```\n\n### Do Not Expose the Endpoint to Untrusted Users\n\n\u003e [!IMPORTANT] \n\u003e The following mitigations reduce exposure but do not fully remediate the vulnerability. Any client that *can* reach the metrics endpoint - including your own Prometheus scraper host if compromised - could still trigger the crash. Updating to **0.217.0** is the recommended resolution.\n\nIf updating is not immediately feasible, restrict access to the metrics endpoint so that it is not reachable by untrusted or unauthenticated network clients. For example:\n\n* **Bind to localhost only** by setting the `host` option to `127.0.0.1` when configuring the `PrometheusExporter`, so the port is not exposed on public or shared network interfaces\n\n* **Use a firewall or network policy** to restrict access to port `9464` (or whichever port you have configured) to only trusted Prometheus scrape hosts\n\n* **Place the endpoint behind a reverse proxy** that filters or validates incoming requests before they reach the exporter\n\n## Details\n\nIn `PrometheusExporter.ts`, the `_requestHandler` calls `new URL(request.url, this._baseUrl)` without any error handling. Node\u0027s HTTP parser accepts absolute-form URIs (e.g. `http://`) for proxy compatibility, including malformed ones. When `request.url` is `\"http://\"`, the `URL` constructor throws `TypeError: Invalid URL`. Since there is no try-catch in the handler, the exception propagates as an uncaught exception and crashes the process.\n\nThe Prometheus metrics endpoint is unauthenticated by design (Prometheus scrapes it) and binds to `0.0.0.0` by default, meaning it is reachable by any network client that can connect to the metrics port.\n\n## Proof of Concept\n\nStart any Node.js application with the Prometheus exporter running on the default port `9464`, then send a single raw TCP packet:\n\n```\necho -ne \u0027GET http:// HTTP/1.1\\r\\nHost: localhost\\r\\n\\r\\n\u0027 | nc localhost 9464\n```\n\nThe process crashes immediately with:\n\n```\nTypeError: Invalid URL\n    at new URL (...)\n    at PrometheusExporter._requestHandler (...)\n```",
  "id": "GHSA-q7rr-3cgh-j5r3",
  "modified": "2026-06-08T23:42:14Z",
  "published": "2026-05-11T14:42:10Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-js/security/advisories/GHSA-q7rr-3cgh-j5r3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44902"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/open-telemetry/opentelemetry-js"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Prometheus exporter process crash via malformed HTTP request"
}

RHSA-2026:41929

Vulnerability from csaf_redhat - Published: 2026-07-20 08:34 - Updated: 2026-09-25 14:30

Summary

Red Hat Security Advisory: Red Hat Developer Hub 1.9.7 release.

Severity

Important

Scope

8 vulnerabilities in this advisory, including CVE-2026-44902.

CVE-2026-44902

A flaw was found in opentelemetry-js, specifically within the OpenTelemetry JavaScript (JS) Prometheus exporter. A remote attacker could exploit this vulnerability by sending a single malformed HTTP request to the metrics endpoint. This lack of proper error handling during URL parsing can cause an uncaught TypeError, leading to the termination of any Node.js process running the exporter. This results in a Denial of Service (DoS) for the affected system.

7.5 (High)


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

Fixed: 1 product Known not affected: 2 products

https://access.redhat.com/errata/RHSA-2026:41929

Open the full advisory

RHSA-2026:51162

Vulnerability from csaf_redhat - Published: 2026-08-06 15:37 - Updated: 2026-09-24 17:57

Summary

Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.2 security update

Severity

Important

Scope

7 vulnerabilities in this advisory, including CVE-2026-44902.

CVE-2026-44902

7.5 (High)


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

Fixed: 1 product

https://access.redhat.com/errata/RHSA-2026:51162

Open the full advisory

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.

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.

Action not permitted

CVE-2026-44902 (GCVE-0-2026-44902)

FKIE_CVE-2026-44902

GHSA-Q7RR-3CGH-J5R3

Summary

Impact

Remediation

Update to the fixed version

Do Not Expose the Endpoint to Untrusted Users

Details

Proof of Concept

RHSA-2026:41929

RHSA-2026:51162

Tags

Sightings

Nomenclature

Related by attack behaviour