MediumFix available

opentelemetry-cpp — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-44967

OpenTelemetry-cpp is the C++ implementation of OpenTelemetry. Prior to release 1.27.0, the OTLP HTTP exporters (traces/metrics/logs) read the full HTTP response into an in-memory vector of bytes without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can MITM the exporter connection). This vulnerability is fixed in opentelemetry-cpp release 1.27.0.

Products: opentelemetry-cpp
Affected versions: 1.19.0-3, 1.23.0-1, 1.23.0-2, 1.23.0-3, 1.28.0-1, 1.28.0-2
Fixed versions: 1.28.0-1
CVEs: CVE-2026-44967
Confirmed fixed CVEs: Not specified
Updated in this feed: 1 Nov 2026, 17:37 UTC · Revision 2

Source evidence

DEBIAN-CVE-2026-44967

core-osv · Original source

Published 12 Jun 2026, 16:16 UTC

osv:DEBIAN-CVE-2026-44967

opentelemetry-cpp

Fixed versions: Not specified

opentelemetry-cpp

Fixed versions: 1.28.0-1

Complete source record

{
  "id": "41622c57def6e1e722246e85d2f89095a41bdc12a5bb605a7da293ab15d6eebf",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-44967",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-44967",
    "summary": "OpenTelemetry-cpp is the C++ implementation of OpenTelemetry. Prior to release 1.27.0, the OTLP HTTP exporters (traces/metrics/logs) read the full HTTP response into an in-memory vector of bytes without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can MITM the exporter connection). This vulnerability is fixed in opentelemetry-cpp release 1.27.0.",
    "evidence": "osv:DEBIAN-CVE-2026-44967",
    "products": [
      {
        "name": {
          "value": "opentelemetry-cpp",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.19.0-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.23.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.23.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.23.0-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.28.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.28.0-2",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "opentelemetry-cpp",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.28.0-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "1.19.0-3",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.23.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.23.0-2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.23.0-3",
            "evidence": "/affected/1/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2026-44967",
      "aliases": [
        "DEBIAN-CVE-2026-44967"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "opentelemetry-cpp",
            "purl": "pkg:deb/debian/opentelemetry-cpp?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "1.19.0-3",
            "1.23.0-1",
            "1.23.0-2",
            "1.23.0-3",
            "1.28.0-1",
            "1.28.0-2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44967.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.28.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "opentelemetry-cpp",
            "purl": "pkg:deb/debian/opentelemetry-cpp?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "1.19.0-3",
            "1.23.0-1",
            "1.23.0-2",
            "1.23.0-3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44967.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-27T09:47:31.991880266Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-44967"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-44967"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-44967",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 460900,
  "published_at": "2026-06-12T16:16:27.973+00:00"
}