fix(deps): update module go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp to v1.43.0 [security]#39
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…metric/otlpmetrichttp to v1.43.0 [security]
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This PR contains the following updates:
v1.42.0→v1.43.0GitHub Vulnerability Alerts
CVE-2026-39882
overview:
this report shows that the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory
bytes.Bufferwithout 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).
severity
HIGH
not claiming: this is a remote dos against every default deployment.
claiming: if the exporter sends traces to an untrusted collector endpoint (or over a network segment where mitm is realistic), that endpoint can crash the process via a large response body.
callsite (pinned):
permalinks (pinned):
root cause:
each exporter client reads
resp.Bodyusingio.Copy(&respData, resp.Body)into abytes.Bufferon both success and error paths, with no upper bound.impact:
a malicious collector can force large transient heap allocations during export (peak memory scales with attacker-chosen response size) and can potentially crash the instrumented process (oom).
affected component:
repro (local-only):
unzip poc.zip -d poc cd poc make canonical resp_bytes=33554432 chunk_delay_ms=0expected output contains:
control (same env, patched target):
unzip poc.zip -d poc cd poc make control resp_bytes=33554432 chunk_delay_ms=0expected control output contains:
attachments: poc.zip (attached)
PR_DESCRIPTION.md
attack_scenario.md
poc.zip
Fixed in: https://github.com/open-telemetry/opentelemetry-go/pull/8108
Release Notes
open-telemetry/opentelemetry-go (go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp)
v1.43.0: /v0.65.0/v0.19.0Compare Source
Added
IsRandomandWithRandomonTraceFlags, andIsRandomonSpanContextingo.opentelemetry.io/otel/tracefor W3C Trace Context Level 2 Random Trace ID Flag support. (#8012)
WithServiceingo.opentelemetry.io/otel/sdk/resource. (#7642)DefaultWithContextandEnvironmentWithContextingo.opentelemetry.io/otel/sdk/resourceto support plumbingcontext.Contextthrough default and environment detectors. (#8051)attribute.EMPTY) ingo.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc. (#8038)attribute.EMPTY) ingo.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc. (#8038)attribute.EMPTY) ingo.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc. (#8038)attribute.EMPTY) ingo.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp. (#8038)attribute.EMPTY) ingo.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp. (#8038)attribute.EMPTY) ingo.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp. (#8038)attribute.EMPTY) ingo.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest. (#8038)go.opentelemetry.io/otel/sdk/metric.Set
OTEL_GO_X_PER_SERIES_START_TIMESTAMPS=trueto enable. (#8060)WithCardinalityLimitSelectorfor metric reader for configuring cardinality limits specific to the instrument kind. (#7855)Changed
EMPTYType ingo.opentelemetry.io/otel/attributeto reflect that an empty value is now a valid value, withINVALIDremaining as a deprecated alias ofEMPTY. (#8038)go.opentelemetry.io/otel/attributeto optimize short slice values with fixed-size fast paths. (#8039)go.opentelemetry.io/otel/sdk/traceby returning early if self-observability is not enabled. (#8067)go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest. (#8073)Deprecated
INVALIDingo.opentelemetry.io/otel/attribute. UseEMPTYinstead. (#8038)Fixed
TraceIdRatioBaseddescription. This is a breaking behavioral change, but it is necessary tomake the implementation spec-compliant. (#8027)
go.opentelemetry.io/otel/sdk/metricwhere the lastvalue aggregation could collect the value 0 even when no zero-value measurements were recorded. (#8056)go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttpto mitigate excessive memory usage caused by a misconfigured or malicious server.Responses exceeding the limit are treated as non-retryable errors. (#8108)
go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttpto mitigate excessive memory usage caused by a misconfigured or malicious server.Responses exceeding the limit are treated as non-retryable errors. (#8108)
go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttpto mitigate excessive memory usage caused by a misconfigured or malicious server.Responses exceeding the limit are treated as non-retryable errors. (#8108)
WithHostIDdetector ingo.opentelemetry.io/otel/sdk/resourceto use full path forkenvcommand on BSD. (#8113)request.GetBodyingo.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttpto correctly handle HTTP2 GOAWAY frame. (#8096)What's Changed
190d7d4by @renovate[bot] in #8013a57be14by @renovate[bot] in #80318895462by @renovate[bot] in #80366e66a94by @renovate[bot] in #804384a4fc4by @renovate[bot] in #8048b7b2c7bby @renovate[bot] in #8044befce8dby @renovate[bot] in #8053c2dfcecby @renovate[bot] in #8055dec52c4by @renovate[bot] in #8063744bfb5by @renovate[bot] in #8064internal/observpackage to stdoutlog by @yumosx in #7735de6f1ccby @renovate[bot] in #8082d00831aby @renovate[bot] in #8078b6b0c46by @renovate[bot] in #8076d5a96adby @renovate[bot] in #81129d38bb4by @renovate[bot] in #8117c99c5cfby @renovate[bot] in #8122New Contributors
Full Changelog: open-telemetry/opentelemetry-go@v1.42.0...v1.43.0
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