CVE-2026-29181

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Source
https://cve.org/CVERecord?id=CVE-2026-29181
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-29181.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-29181
Aliases
Downstream
AZL (7)
CGA (1954)
CLEANSTART (138)
DEBIAN (1)
MINI (568)
openSUSE (2)
ROOT (1)
SUSE (3)
UBUNTU (1)
Related
openSUSE (2)
SUSE (3)
Published
2026-04-07T20:29:13Z
Modified
2026-10-22T02:51:13Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
OpenTelemetry-Go multi-value `baggage` header extraction causes excessive allocations (remote dos amplification)
Details

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From 1.36.0 to 1.40.0, multi-value baggage: header extraction parses each header field-value independently and aggregates members across values. This allows an attacker to amplify cpu and allocations by sending many baggage: header lines, even when each individual value is within the 8192-byte per-value parse limit. This vulnerability is fixed in 1.41.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29181.json"
}
References

Affected packages

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

Affected ranges

Type
GIT
Repo
https://github.com/open-telemetry/opentelemetry-go
Events
Introduced
a85ae98dcedc0761078518a715dea53e519b4846
Fixed
4575a9774dd9415ffc858dd34955493b0031065a
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "1.36.0"
                },
                {
                    "fixed": "1.41.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "cpe": "cpe:2.3:a:opentelemetry:opentelemetry:*:*:*:*:*:go:*:*",
            "range": [
                {
                    "introduced": "1.36.0"
                },
                {
                    "fixed": "1.41.0"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Affected versions

bridge/opencensus/test/v1.*
bridge/opencensus/test/v1.36.0
bridge/opencensus/test/v1.37.0
bridge/opencensus/test/v1.38.0
bridge/opencensus/test/v1.39.0
bridge/opencensus/test/v1.40.0
bridge/opencensus/v1.*
bridge/opencensus/v1.36.0
bridge/opencensus/v1.37.0
bridge/opencensus/v1.38.0
bridge/opencensus/v1.39.0
bridge/opencensus/v1.40.0
bridge/opentracing/test/v1.*
bridge/opentracing/test/v1.36.0
bridge/opentracing/v1.*
bridge/opentracing/v1.36.0
bridge/opentracing/v1.37.0
bridge/opentracing/v1.38.0
bridge/opentracing/v1.39.0
bridge/opentracing/v1.40.0
exporters/otlp/otlplog/otlploggrpc/v0.*
exporters/otlp/otlplog/otlploggrpc/v0.12.0
exporters/otlp/otlplog/otlploggrpc/v0.12.1
exporters/otlp/otlplog/otlploggrpc/v0.12.2
exporters/otlp/otlplog/otlploggrpc/v0.13.0
exporters/otlp/otlplog/otlploggrpc/v0.14.0
exporters/otlp/otlplog/otlploggrpc/v0.15.0
exporters/otlp/otlplog/otlploggrpc/v0.16.0
exporters/otlp/otlplog/otlploghttp/v0.*
exporters/otlp/otlplog/otlploghttp/v0.12.0
exporters/otlp/otlplog/otlploghttp/v0.12.1
exporters/otlp/otlplog/otlploghttp/v0.12.2
exporters/otlp/otlplog/otlploghttp/v0.13.0
exporters/otlp/otlplog/otlploghttp/v0.14.0
exporters/otlp/otlplog/otlploghttp/v0.15.0
exporters/otlp/otlplog/otlploghttp/v0.16.0
exporters/otlp/otlpmetric/otlpmetricgrpc/v1.*
exporters/otlp/otlpmetric/otlpmetricgrpc/v1.36.0
exporters/otlp/otlpmetric/otlpmetricgrpc/v1.37.0
exporters/otlp/otlpmetric/otlpmetricgrpc/v1.38.0
exporters/otlp/otlpmetric/otlpmetricgrpc/v1.39.0
exporters/otlp/otlpmetric/otlpmetricgrpc/v1.40.0
exporters/otlp/otlpmetric/otlpmetrichttp/v1.*
exporters/otlp/otlpmetric/otlpmetrichttp/v1.36.0
exporters/otlp/otlpmetric/otlpmetrichttp/v1.37.0
exporters/otlp/otlpmetric/otlpmetrichttp/v1.38.0
exporters/otlp/otlpmetric/otlpmetrichttp/v1.39.0
exporters/otlp/otlpmetric/otlpmetrichttp/v1.40.0
exporters/otlp/otlptrace/otlptracegrpc/v1.*
exporters/otlp/otlptrace/otlptracegrpc/v1.36.0
exporters/otlp/otlptrace/otlptracegrpc/v1.37.0
exporters/otlp/otlptrace/otlptracegrpc/v1.38.0
exporters/otlp/otlptrace/otlptracegrpc/v1.39.0
exporters/otlp/otlptrace/otlptracegrpc/v1.40.0
exporters/otlp/otlptrace/otlptracehttp/v1.*
exporters/otlp/otlptrace/otlptracehttp/v1.36.0
exporters/otlp/otlptrace/otlptracehttp/v1.37.0
exporters/otlp/otlptrace/otlptracehttp/v1.38.0
exporters/otlp/otlptrace/otlptracehttp/v1.39.0
exporters/otlp/otlptrace/otlptracehttp/v1.40.0
exporters/otlp/otlptrace/v1.*
exporters/otlp/otlptrace/v1.36.0
exporters/otlp/otlptrace/v1.37.0
exporters/otlp/otlptrace/v1.38.0
exporters/otlp/otlptrace/v1.39.0
exporters/otlp/otlptrace/v1.40.0
exporters/prometheus/v0.*
exporters/prometheus/v0.58.0
exporters/prometheus/v0.59.0
exporters/prometheus/v0.59.1
exporters/prometheus/v0.60.0
exporters/prometheus/v0.61.0
exporters/prometheus/v0.62.0
exporters/stdout/stdoutlog/v0.*
exporters/stdout/stdoutlog/v0.12.0
exporters/stdout/stdoutlog/v0.12.1
exporters/stdout/stdoutlog/v0.12.2
exporters/stdout/stdoutlog/v0.13.0
exporters/stdout/stdoutlog/v0.14.0
exporters/stdout/stdoutlog/v0.15.0
exporters/stdout/stdoutlog/v0.16.0
exporters/stdout/stdoutmetric/v1.*
exporters/stdout/stdoutmetric/v1.36.0
exporters/stdout/stdoutmetric/v1.37.0
exporters/stdout/stdoutmetric/v1.38.0
exporters/stdout/stdoutmetric/v1.39.0
exporters/stdout/stdoutmetric/v1.40.0
exporters/stdout/stdouttrace/v1.*
exporters/stdout/stdouttrace/v1.36.0
exporters/stdout/stdouttrace/v1.37.0
exporters/stdout/stdouttrace/v1.38.0
exporters/stdout/stdouttrace/v1.39.0
exporters/stdout/stdouttrace/v1.40.0
exporters/zipkin/v1.*
exporters/zipkin/v1.36.0
exporters/zipkin/v1.37.0
exporters/zipkin/v1.38.0
exporters/zipkin/v1.39.0
exporters/zipkin/v1.40.0
log/logtest/v0.*
log/logtest/v0.13.0
log/logtest/v0.14.0
log/logtest/v0.15.0
log/logtest/v0.16.0
log/v0.*
log/v0.12.0
log/v0.12.1
log/v0.12.2
log/v0.13.0
log/v0.14.0
log/v0.15.0
log/v0.16.0
metric/v1.*
metric/v1.36.0
metric/v1.37.0
metric/v1.38.0
metric/v1.39.0
metric/v1.40.0
schema/v0.*
schema/v0.0.13
schema/v0.0.14
sdk/log/logtest/v0.*
sdk/log/logtest/v0.13.0
sdk/log/logtest/v0.14.0
sdk/log/logtest/v0.15.0
sdk/log/logtest/v0.16.0
sdk/log/v0.*
sdk/log/v0.12.0
sdk/log/v0.12.1
sdk/log/v0.12.2
sdk/log/v0.13.0
sdk/log/v0.14.0
sdk/log/v0.15.0
sdk/log/v0.16.0
sdk/metric/v1.*
sdk/metric/v1.36.0
sdk/metric/v1.37.0
sdk/metric/v1.38.0
sdk/metric/v1.39.0
sdk/metric/v1.40.0
sdk/v1.*
sdk/v1.36.0
sdk/v1.37.0
sdk/v1.38.0
sdk/v1.39.0
sdk/v1.40.0
trace/v1.*
trace/v1.36.0
trace/v1.37.0
trace/v1.38.0
trace/v1.39.0
trace/v1.40.0
v1.*
v1.36.0
v1.37.0
v1.38.0
v1.39.0
v1.40.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-29181.json"