Vulnerability-Lookup

UBUNTU-CVE-2026-116694 (CVE-2026-116694)

Vulnerability from osv_ubuntu – Published: 2026-10-27 21:18 – Updated: 2026-10-27 21:18 – Source website

Details

OpenTelemetry Python provides the Python API and SDK for OpenTelemetry. Prior to 1.45.0, JaegerPropagator.extract() in opentelemetry-propagator-jaeger processes inbound uberctx-* baggage values without entry, per-entry byte, or total-byte limits. Services that enable the optional Jaeger propagator can perform unnecessary CPU work and short-lived heap allocations when an untrusted carrier supplies numerous or oversized values, contributing to denial of service when transport-level limits do not constrain the input. Common default Python HTTP server limits reduce the practical impact, while custom getters, non-HTTP transports, or raised header limits increase exposure. This issue is fixed in version 1.45.0.

Severity

6.3 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-116694	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-116694	REPORT
	https://github.com/open-telemetry/opentelemetry-p…	REPORT
	https://github.com/open-telemetry/opentelemetry-p…	REPORT
	https://github.com/open-telemetry/opentelemetry-p…	REPORT
	https://github.com/open-telemetry/opentelemetry-p…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-opentelemetry-api",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-configuration",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp-proto-common",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp-proto-grpc",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp-proto-http",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-prometheus",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-zipkin-json",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-zipkin-proto-http",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-opentracing-shim",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-propagator-b3",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-propagator-jaeger",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-proto",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-proto-json",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-sdk",
            "binary_version": "1.44.0-2"
          },
          {
            "binary_name": "python3-opentelemetry-semantic-conventions",
            "binary_version": "1.44.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "python-opentelemetry",
        "purl": "pkg:deb/ubuntu/python-opentelemetry@1.44.0-2?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.39.1-2",
        "1.42.1-1",
        "1.43.0-1",
        "1.44.0-1",
        "1.44.0-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "python3-opentelemetry-api",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp-proto-common",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp-proto-grpc",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-otlp-proto-http",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-prometheus",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-zipkin-json",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-exporter-zipkin-proto-http",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-opentracing-shim",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-propagator-b3",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-propagator-jaeger",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-proto",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-sdk",
            "binary_version": "1.39.1-2"
          },
          {
            "binary_name": "python3-opentelemetry-semantic-conventions",
            "binary_version": "1.39.1-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "python-opentelemetry",
        "purl": "pkg:deb/ubuntu/python-opentelemetry@1.39.1-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.38.0-1",
        "1.38.0-2",
        "1.39.1-1",
        "1.39.1-2"
      ]
    }
  ],
  "aliases": [],
  "details": "OpenTelemetry Python provides the Python API and SDK for OpenTelemetry. Prior to 1.45.0, JaegerPropagator.extract() in opentelemetry-propagator-jaeger processes inbound uberctx-* baggage values without entry, per-entry byte, or total-byte limits. Services that enable the optional Jaeger propagator can perform unnecessary CPU work and short-lived heap allocations when an untrusted carrier supplies numerous or oversized values, contributing to denial of service when transport-level limits do not constrain the input. Common default Python HTTP server limits reduce the practical impact, while custom getters, non-HTTP transports, or raised header limits increase exposure. This issue is fixed in version 1.45.0.",
  "id": "UBUNTU-CVE-2026-116694",
  "modified": "2026-10-27T21:18:00Z",
  "published": "2026-10-27T21:18:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-116694"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-116694"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open-telemetry/opentelemetry-python/security/advisories/GHSA-f5m9-jfrj-jjj7"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open-telemetry/opentelemetry-python/pull/5556"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open-telemetry/opentelemetry-python/commit/65c4eeb87cd3815dc795d3b5485e9ea0d5affcc7"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-116694"
  ]
}

CVE-2026-116694 (GCVE-0-2026-116694)

Vulnerability from cvelistv5 – Published: 2026-10-27 20:09 – Updated: 2026-10-28 16:13

Title

OpenTelemetry Python: Unbounded memory allocation in Jaeger baggage propagation

Summary

Severity

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-28 14:34 UTC

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7926 records in the last 180 days details

References

4 references

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

Impacted products

1 product

Vendor	Product	Version
open-telemetry	opentelemetry-python	Affected: < 1.45.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-116694",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-28T14:34:44.239027Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-28T16:13:25.340Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "opentelemetry-python",
          "vendor": "open-telemetry",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.45.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "OpenTelemetry Python provides the Python API and SDK for OpenTelemetry. Prior to 1.45.0, JaegerPropagator.extract() in opentelemetry-propagator-jaeger processes inbound uberctx-* baggage values without entry, per-entry byte, or total-byte limits. Services that enable the optional Jaeger propagator can perform unnecessary CPU work and short-lived heap allocations when an untrusted carrier supplies numerous or oversized values, contributing to denial of service when transport-level limits do not constrain the input. Common default Python HTTP server limits reduce the practical impact, while custom getters, non-HTTP transports, or raised header limits increase exposure. This issue is fixed in version 1.45.0."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 6.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T20:09:06.484Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/open-telemetry/opentelemetry-python/security/advisories/GHSA-f5m9-jfrj-jjj7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-python/security/advisories/GHSA-f5m9-jfrj-jjj7"
        },
        {
          "name": "https://github.com/open-telemetry/opentelemetry-python/pull/5556",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-python/pull/5556"
        },
        {
          "name": "https://github.com/open-telemetry/opentelemetry-python/commit/65c4eeb87cd3815dc795d3b5485e9ea0d5affcc7",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-python/commit/65c4eeb87cd3815dc795d3b5485e9ea0d5affcc7"
        },
        {
          "name": "https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/open-telemetry/opentelemetry-python/releases/tag/v1.45.0"
        }
      ],
      "source": {
        "advisory": "GHSA-f5m9-jfrj-jjj7",
        "discovery": "UNKNOWN"
      },
      "title": "OpenTelemetry Python: Unbounded memory allocation in Jaeger baggage propagation"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-116694",
    "datePublished": "2026-10-27T20:09:06.484Z",
    "dateReserved": "2026-10-26T20:00:59.830Z",
    "dateUpdated": "2026-10-28T16:13:25.340Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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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.

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