CVE-2026-40182

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-40182
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40182.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40182
Aliases
Downstream
Related
Published
2026-04-23T17:51:34Z
Modified
2026-08-29T11:45:52Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
OpenTelemetry dotnet: OTLP exporter reads unbounded HTTP response bodies
Details

OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry to a back-end/collector over gRPC or HTTP using OpenTelemetry Protocol format (OTLP), if the request results in a unsuccessful request (i.e. HTTP 4xx or 5xx), the response is read into memory with no upper-bound on the number of bytes consumed. This could cause memory exhaustion in the consuming application if the configured back-end/collector endpoint is attacker-controlled (or a network attacker can MitM the connection) and an extremely large body is returned by the response. This vulnerability is fixed in 1.15.2.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-789"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40182.json"
}
References

Affected packages

Git / github.com/open-telemetry/opentelemetry-dotnet

Affected ranges

Type
GIT
Repo
https://github.com/open-telemetry/opentelemetry-dotnet
Events
Introduced
640cf63628567b76b348b26988920dbc0b5c1662
Fixed
4b588c1cacd8ae7eade8b4c5bccda4acfb7c35e5
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*",
    "extracted_events": [
        {
            "introduced": "1.13.1"
        },
        {
            "fixed": "1.15.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}
Type
GIT
Repo
https://github.com/open-telemetry/opentelemetry-js
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
48fb15862e801b742059a3e39dbcc8ef4c10b2e2
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:.net:*:*",
    "extracted_events": [
        {
            "introduced": "1.13.1"
        },
        {
            "fixed": "1.15.2"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

0.*
0.11.0
api/v1.*
api/v1.3.0
api/v1.4.0
api/v1.4.1
core-1.*
core-1.13.1
core-1.14.0
core-1.14.0-rc.1
core-1.15.0
core-1.15.1
coreunstable-1.*
coreunstable-1.13.1-beta.1
coreunstable-1.14.0-beta.1
coreunstable-1.15.0-beta.1
coreunstable-1.15.1-beta.1
experimental/v0.*
experimental/v0.27.0
experimental/v0.29.0
experimental/v0.29.1
experimental/v0.30.0
experimental/v0.31.0
experimental/v0.32.0
experimental/v0.33.0
experimental/v0.34.0
experimental/v0.35.0
experimental/v0.35.1
experimental/v0.36.0
experimental/v0.37.0
experimental/v0.38.0
experimental/v0.39.0
experimental/v0.39.1
experimental/v0.40.0
experimental/v0.41.0
experimental/v0.41.1
stable/v1.*
stable/v1.0.0
stable/v1.0.1
v0.*
v0.1.0
v0.1.1
v0.10.0
v0.10.1
v0.10.2
v0.10.3-canary.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.18.1
v0.18.2
v0.19.0
v0.2.0
v0.20.0
v0.21.0
v0.22.0
v0.23.0
v0.24.0
v0.25.0
v0.26.0
v0.28.0
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.4.0
v0.5.0
v0.5.1
v0.5.2
v0.6.0
v0.6.1
v0.7.0
v0.8.0
v0.8.1
v0.8.2
v0.8.3
v0.9.0
v1.*
v1.1.0
v1.1.1
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.15.1
v1.2.0
v1.3.0
v1.4.0
v1.5.0
v1.6.0
v1.7.0
v1.8.0
v1.9.0
v1.9.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40182.json"