CVE catalog

CVE-2026-81871

Severity: Medium · CVSS 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Published: Sep 16, 2026, 8:43:40 PM UTC
Updated: Sep 16, 2026, 9:17:22 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.20% · Oct 25, 2026

OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the exporters/otlp/otlplog/otlploggrpc package loads OTEL_EXPORTER_OTLP_LOGS_CERTIFICATE, OTEL_EXPORTER_OTLP_CERTIFICATE, and related client certificate environment variables through loadEnvTLS into cfg.tlsCfg, but newGRPCDialOptions does not apply cfg.tlsCfg when creating gRPC transport credentials. The environment-only TLS path instead uses credentials.NewTLS with system roots and no configured client certificate, bypassing intended private CA pinning and mutual TLS unless the application also supplies WithTLSCredentials. A network attacker able to intercept or spoof the collector connection with a system-trusted certificate can read or alter log telemetry. This issue is fixed in version 0.21.0.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	golang-opentelemetry-otel	sid	`1.46.0-3`	vulnerable
Debian	golang-opentelemetry-otel	forky	`1.46.0-2`	vulnerable
Debian	golang-opentelemetry-otel	trixie	`1.31.0-4`	vulnerable
Debian	golang-opentelemetry-otel	bookworm	`1.1.0-2`	not affected
Go	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc	Not reported	`0.21.0`	fixed
Suse	distribution	linux enterprise server 16.0	`3.1.1-160000.4.1`	fixed
Suse	distribution	linux enterprise server for sap applications 16.0	`3.1.1-160000.4.1`	fixed
Opensuse	distribution	leap 16.0	`3.1.1-160000.4.1`	fixed
Opensuse	helm3	tumbleweed	`3.22.0-2.1`	fixed
Opensuse	helm	tumbleweed	`4.3.0-3.1`	fixed
Opensuse	distribution	tumbleweed	`3.1.1-8.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	golang-opentelemetry-otel	source	sid	`(unfixed)`	not yet assigned	Not reported	[1149049]
Debian	golang-opentelemetry-otel	source	forky	`(unfixed)`	not yet assigned	Not reported	[1149049]
Debian	golang-opentelemetry-otel	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1149049]
Debian	golang-opentelemetry-otel	source	bookworm	`Not affected`	unimportant	Not reported	[1149049]
Go	go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc	go	Not reported	`0.21.0`	Not reported	GHSA-W34Q-CM8F-9C5X	Not reported
Suse	distribution	rpm	linux enterprise server 16.0	`3.1.1-160000.4.1`	Not reported	SUSE-SU-2026:23990-1	Not reported
Suse	distribution	rpm	linux enterprise server for sap applications 16.0	`3.1.1-160000.4.1`	Not reported	SUSE-SU-2026:23990-1	Not reported
Opensuse	distribution	rpm	leap 16.0	`3.1.1-160000.4.1`	Not reported	OPENSUSE-SU-2026:22010-1	Not reported
Opensuse	helm3	rpm	tumbleweed	`3.22.0-2.1`	Not reported	OPENSUSE-SU-2026:11892-1	Not reported
Opensuse	helm	rpm	tumbleweed	`4.3.0-3.1`	Not reported	OPENSUSE-SU-2026:11875-1	Not reported
Opensuse	distribution	rpm	tumbleweed	`3.1.1-8.1`	Not reported	OPENSUSE-SU-2026:11872-1	Not reported

[Debian bug #1149049]

Notes

[trixie] golang-opentelemetry-otel: Minor issue

OpenFactory catalog packages

[Debian 13 (Trixie)]

[golang-opentelemetry-otel-dev]Affected
Source package: [golang-opentelemetry-otel]
Details (2)
- 1.31.0-4 · all · trixie
  Affected
  nvd · golang-opentelemetry-otel · debian · 13
- 1.31.0-4 · all · trixie
  Affected
  nvd · golang-opentelemetry-otel · debian · 13

[openSUSE Tumbleweed]

[helm]Affected
Source package: [helm]
Details (1)
- 4.2.4-1.1 · x86_64 · tumbleweed
  Affected · Fixed: 4.3.0-3.1
  nvd · helm · opensuse · tumbleweed
[helm3]Affected
Source package: [helm3]
Details (1)
- 3.21.3-6.1 · x86_64 · tumbleweed
  Affected · Fixed: 3.22.0-2.1
  nvd · helm3 · opensuse · tumbleweed
[distribution-registry]Unknown
Source package: [distribution]
Details (1)
- 3.1.1-5.1 · x86_64 · tumbleweed
  Unknown · Fixed: 3.1.1-8.1
  Version impact unknown
  nvd · distribution · opensuse · tumbleweed
[helm3-bash-completion]Unknown
Source package: [helm3]
Details (1)
- 3.21.3-6.1 · noarch · tumbleweed
  Unknown · Fixed: 3.22.0-2.1
  Version impact unknown
  nvd · helm3 · opensuse · tumbleweed
[helm3-fish-completion]Unknown
Source package: [helm3]
Details (1)
- 3.21.3-6.1 · noarch · tumbleweed
  Unknown · Fixed: 3.22.0-2.1
  Version impact unknown
  nvd · helm3 · opensuse · tumbleweed
[helm3-zsh-completion]Unknown
Source package: [helm3]
Details (1)
- 3.21.3-6.1 · noarch · tumbleweed
  Unknown · Fixed: 3.22.0-2.1
  Version impact unknown
  nvd · helm3 · opensuse · tumbleweed
[helm-bash-completion]Unknown
Source package: [helm]
Details (1)
- 4.2.4-1.1 · noarch · tumbleweed
  Unknown · Fixed: 4.3.0-3.1
  Version impact unknown
  nvd · helm · opensuse · tumbleweed
[helm-fish-completion]Unknown
Source package: [helm]
Details (1)
- 4.2.4-1.1 · noarch · tumbleweed
  Unknown · Fixed: 4.3.0-3.1
  Version impact unknown
  nvd · helm · opensuse · tumbleweed
[helm-zsh-completion]Unknown
Source package: [helm]
Details (1)
- 4.2.4-1.1 · noarch · tumbleweed
  Unknown · Fixed: 4.3.0-3.1
  Version impact unknown
  nvd · helm · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[golang-opentelemetry-otel-dev]Not affected
Source package: [golang-opentelemetry-otel]
Details (2)
- 1.1.0-2 · all · bookworm
  Not affected
  nvd · golang-opentelemetry-otel · debian · bookworm
- 1.1.0-2 · all · bookworm
  Not affected
  nvd · golang-opentelemetry-otel · debian · bookworm

Observed: Oct 23, 2026, 8:59:09 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]