Vulnerability-Lookup

GHSA-38H3-2333-QX47

Vulnerability from github – Published: 2026-04-18 01:05 – Updated: 2026-04-18 01:05

Summary

OpenTelemetry .NET has potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path

Details

Summary

[!IMPORTANT]
There is no plan to fix this issue as OpenTelemetry.Exporter.Jaeger was deprecated in 2023. It is for informational purposes only.

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.

Details

The Jaeger exporter conversion path can append tag/event data into pooled list structures. In affected versions, pooled allocation sizing may be influenced by large observed payloads and reused globally across later allocations, resulting in persistent oversized rentals and elevated memory pressure. In environments where telemetry attributes/events can be influenced by untrusted input and limits are increased from defaults, this may lead to process instability or denial of service.

Impact

Availability impact only. Confidentiality and integrity impacts are not expected.

Workarounds / Mitigations

Prefer maintained exporters (for example OpenTelemetry Protocol format (OTLP)) instead of the Jaeger exporter.

Severity ?

5.9 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "OpenTelemetry.Exporter.Jaeger"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1.6.0-rc.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41078"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-18T01:05:12Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Summary\n\n\u003e [!IMPORTANT]  \n\u003e There is no plan to fix this issue as `OpenTelemetry.Exporter.Jaeger` was deprecated in 2023. It is for informational purposes only.\n\n`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.\n\n### Details\n\nThe Jaeger exporter conversion path can append tag/event data into pooled list structures. In affected versions, pooled allocation sizing may be influenced by large observed payloads and reused globally across later allocations, resulting in persistent oversized rentals and elevated memory pressure. In environments where telemetry attributes/events can be influenced by untrusted input and limits are increased from defaults, this may lead to process instability or denial of service.\n\n### Impact\n\nAvailability impact only. Confidentiality and integrity impacts are not expected.\n\n### Workarounds / Mitigations\n\n* Prefer maintained exporters (for example OpenTelemetry Protocol format (OTLP)) instead of the Jaeger exporter.",
  "id": "GHSA-38h3-2333-qx47",
  "modified": "2026-04-18T01:05:12Z",
  "published": "2026-04-18T01:05:12Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/open-telemetry/opentelemetry-dotnet"
    }
  ],
  "schema_version": "1.4.0",
  "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 .NET has potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path"
}

CVE-2026-41078 (GCVE-0-2026-41078)

Vulnerability from cvelistv5 – Published: 2026-04-23 18:05 – Updated: 2026-04-23 18:52

Title

OpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path

Summary

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.

Severity ?

5.9 (Medium)


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

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M

References

URL

Tags

https://github.com/open-telemetry/opentelemetry-d…

x_refsource_CONFIRM

Impacted products

Vendor

Product

Version

open-telemetry

opentelemetry-dotnet

Affected: <= 1.6.0-rc.1

open-telemetry

OpenTelemetry.Exporter.Jaeger

Affected: <= 1.6.0-rc.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-41078",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-23T18:52:04.471326Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-23T18:52:26.466Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "opentelemetry-dotnet",
          "vendor": "open-telemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.6.0-rc.1"
            }
          ]
        },
        {
          "product": "OpenTelemetry.Exporter.Jaeger",
          "vendor": "open-telemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.6.0-rc.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-23T18:05:41.367Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-dotnet/security/advisories/GHSA-38h3-2333-qx47"
        }
      ],
      "source": {
        "advisory": "GHSA-38h3-2333-qx47",
        "discovery": "UNKNOWN"
      },
      "title": "OpenTelemetry dotnet: Potential memory exhaustion via unbounded pooled-list sizing in Jaeger exporter conversion path"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-41078",
    "datePublished": "2026-04-23T18:05:41.367Z",
    "dateReserved": "2026-04-16T16:43:03.176Z",
    "dateUpdated": "2026-04-23T18:52:26.466Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-38H3-2333-QX47

Summary

Details

Impact

Workarounds / Mitigations

CVE-2026-41078 (GCVE-0-2026-41078)

Tags

Sightings

Nomenclature