Medium
opentelemetry-cpp — security advisory
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
- 1.17.0-3ubuntu1, 1.19.0-3, 1.23.0-2, 1.23.0-3, 1.23.0-3build1, 1.23.0-3build2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-44967
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:04 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-44967
opentelemetry-cpp
Fixed versions: Not specified
opentelemetry-cpp
Fixed versions: Not specified
opentelemetry-cpp
Fixed versions: Not specified
Complete source record
{
"id": "249a50e01504813933fd8059efda60d9637e49856c93d9de55ef01077692e2cd",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-44967",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-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:UBUNTU-CVE-2026-44967",
"products": [
{
"name": {
"value": "opentelemetry-cpp",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.17.0-3ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1.19.0-3",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "opentelemetry-cpp",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.23.0-3build1",
"evidence": "/affected/1/versions"
},
{
"value": "1.23.0-3build2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.19.0-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.23.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.23.0-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.23.0-3build1",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-44967",
"aliases": [
"UBUNTU-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"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "opentelemetry-cpp",
"purl": "pkg:deb/ubuntu/opentelemetry-cpp?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1.17.0-3ubuntu1",
"1.19.0-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44967.json"
},
"ecosystem_specific": {
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}
},
{
"ranges": [
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"type": "ECOSYSTEM",
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],
"package": {
"name": "opentelemetry-cpp",
"purl": "pkg:deb/ubuntu/opentelemetry-cpp?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"1.23.0-3build1",
"1.23.0-3build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44967.json"
},
"ecosystem_specific": {
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{
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]
}
},
{
"ranges": [
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],
"package": {
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"purl": "pkg:deb/ubuntu/opentelemetry-cpp?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.19.0-3",
"1.23.0-2",
"1.23.0-3",
"1.23.0-3build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-44967.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "opentelemetry-cpp",
"binary_version": "1.23.0-3build1"
}
]
}
}
],
"modified": "2026-10-17T13:00:09.759505300Z",
"provider": "osv",
"upstream": [
"CVE-2026-44967"
],
"references": [
"https://ubuntu.com/security/CVE-2026-44967",
"https://www.cve.org/CVERecord?id=CVE-2026-44967",
"https://github.com/open-telemetry/opentelemetry-cpp/security/advisories/GHSA-5qhm-4rfp-qqvj",
"https://github.com/open-telemetry/opentelemetry-cpp/issues/3958",
"https://github.com/open-telemetry/opentelemetry-cpp/pull/4078",
"https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58"
]
},
"related_cves": [
{
"value": "CVE-2026-44967",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360376,
"published_at": "2026-06-12T16:16:00+00:00"
}