CVE-2026-39882
Description
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer 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 1.43.0.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Mitigation details
CVE-2026-39882 NameCVE-2026-39882 DescriptionOpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer 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…
CVE-2026-39882
| Name | CVE-2026-39882 |
| Description | OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer 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 1.43.0. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1133077 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| golang-opentelemetry-otel (PTS) | bookworm | 1.1.0-2 | vulnerable |
| trixie | 1.31.0-4 | vulnerable | |
| forky | 1.31.0-6 | vulnerable | |
| sid | 1.43.0-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| golang-opentelemetry-otel | source | (unstable) | 1.43.0-1 | 1133077 |
Notes
[trixie] - golang-opentelemetry-otel <no-dsa> (Minor issue)
[bookworm] - golang-opentelemetry-otel <no-dsa> (Minor issue)
https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58
https://github.com/open-telemetry/opentelemetry-go/pull/8108
Fixed by: https://github.com/open-telemetry/opentelemetry-go/commit/5e363de517dba6db62736b2f5cdef0e0929b4cd0 (v1.43.0)
Apply commands
[trixie] - golang-opentelemetry-otel <no-dsa> (Minor issue)[bookworm] - golang-opentelemetry-otel <no-dsa> (Minor issue)https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58https://github.com/open-telemetry/opentelemetry-go/pull/8108Fixed by: https://github.com/open-telemetry/opentelemetry-go/commit/5e363de517dba6db62736b2f5cdef0e0929b4cd0 (v1.43.0)OS impact
Debian Mixed 4 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Affected | — |
| sid | Fixed | 1.43.0-1 |
| forky | Affected | — |
| bookworm | Affected | — |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp | <1.43.0 | 1.43.0 |
| Go | go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetrichttp | <1.43.0 | 1.43.0 |
| Go | go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploghttp | <0.19.0 | 0.19.0 |
References
- https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-w8rr-5gcm-pp58
- https://nvd.nist.gov/vuln/detail/CVE-2026-39882
- https://github.com/open-telemetry/opentelemetry-go/pull/8108
- https://github.com/open-telemetry/opentelemetry-go
- http://github.com/open-telemetry/opentelemetry-go/releases/tag/v1.43.0
- https://security-tracker.debian.org/tracker/CVE-2026-39882
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.