{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.6.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "22e64e21f3ae10f08bac67729e5ef6d32a5ce308"
            }
          ],
          "repo": "https://github.com/open-telemetry/opentelemetry-cpp",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.6.0-rc.1"
              },
              {
                "fixed": "1.6.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5cc1f39cbd16b5a741985b2cfe1ac3da496a48f2"
            }
          ],
          "repo": "https://github.com/open-telemetry/opentelemetry-dotnet",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.6.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "17667f5eef540dc84c67447912028b27152692f9"
            }
          ],
          "repo": "https://github.com/open-telemetry/opentelemetry-go",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.6.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5611141da827ce765edf38d4218f3c8ec79824d8"
            }
          ],
          "repo": "https://github.com/open-telemetry/opentelemetry-go-contrib",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.6.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a5abee69119cc41d9d34f6beb5c1826eef1ac0dd"
            }
          ],
          "repo": "https://github.com/open-telemetry/opentelemetry-js",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-38h3-2333-qx47"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41078.json"
  },
  "details": "OpenTelemetry dotnet is a dotnet telemetry framework. In 1.6.0-rc.1 and earlier, OpenTelemetry.Exporter.Jaeger may allow sustained memory pressure when the internal pooled-list sizing grows based on a large observed span/tag set and that enlarged size is reused for subsequent allocations. Under high-cardinality or attacker-influenced telemetry input, this can increase memory consumption and potentially cause denial of service. There is no plan to fix this issue as OpenTelemetry.Exporter.Jaeger was deprecated in 2023.",
  "id": "CVE-2026-41078",
  "modified": "2026-08-29T11:31:22.725992821Z",
  "published": "2026-04-23T18:05:41.367Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41078.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41078"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "OpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path"
}