{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:go:*:*",
              "cpe:2.3:a:opentelemetry:opentelemetry:1.43.0:*:*:*:*:go:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.42.0"
              },
              {
                "introduced": "1.43.0"
              },
              {
                "last_affected": "1.43.0"
              }
            ],
            "source": [
              "CPE_RANGE",
              "CPE_STRING"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a3941ff595235e952774f0a581c7655bec93b0ab"
            },
            {
              "introduced": "9276201a64b623606e3eaa0d61ae8ee6d62756c0"
            },
            {
              "last_affected": "9276201a64b623606e3eaa0d61ae8ee6d62756c0"
            }
          ],
          "repo": "https://github.com/open-telemetry/opentelemetry-go",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": [
              "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:go:*:*",
              "cpe:2.3:a:opentelemetry:opentelemetry:1.43.0:*:*:*:*:go:*:*"
            ],
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.42.0"
              },
              {
                "introduced": "1.43.0"
              },
              {
                "last_affected": "1.43.0"
              }
            ],
            "source": [
              "CPE_RANGE",
              "CPE_STRING"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d8dabf67361a4619c353ad0637432f3d0d16ba63"
            },
            {
              "introduced": "45977a4b9cf4a60effd1ee07367043f7e9bcae66"
            },
            {
              "last_affected": "45977a4b9cf4a60effd1ee07367043f7e9bcae66"
            }
          ],
          "repo": "https://github.com/open-telemetry/opentelemetry-go-contrib",
          "type": "GIT"
        }
      ],
      "versions": [
        "1.43.0",
        "= 1.41.0",
        "= 1.43.0"
      ]
    }
  ],
  "aliases": [
    "GHSA-5wrp-cwcj-q835"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41178.json"
  },
  "details": "OpenTelemetry-Go is the Go implementation of OpenTelemetry. Versions 1.41.0 and 1.43.0 removed raw-length rejection and it causes `Parse` to process arbitrarily large/invalid baggage headers and log errors, enabling DoS via oversized inputs. Versions 1.42.0 and 1.44.0 fix the issue.",
  "id": "CVE-2026-41178",
  "modified": "2026-07-24T03:56:42.620415902Z",
  "published": "2026-06-04T14:38:23.707Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41178.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-5wrp-cwcj-q835"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41178"
    },
    {
      "type": "FIX",
      "url": "https://github.com/open-telemetry/opentelemetry-go/pull/7880"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenTelemetry-Go's baggage parsing no longer caps raw header length"
}