# CVE-2026-112006: OpenTelemetry opentelemetry-exporter-otlp-proto-http TLS certificate validation bypass

Source: https://junglewise.ai/threats/cve-2026-112006-opentelemetry-opentelemetry-exporter-otlp-proto-http-1-5-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-18. Updated: 2026-10-18  
License: CC BY 4.0 with a link back

CVE-2026-112006 · Severity: medium · CVSS 6.5 · Published 2026-10-18

OpenTelemetry's OTLP HTTP exporter is a library that sends telemetry data (traces, metrics, logs) from applications to a central collector. A vulnerability allows empty certificate configuration variables to disable TLS verification entirely, letting attackers intercept network traffic and impersonate the collector. This enables theft or modification of exported telemetry including sensitive headers and authentication credentials.

Vendors: [Opentelemetry](https://junglewise.ai/threats/vendors/opentelemetry).

## Quick answers

**Is CVE-2026-112006 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112006 being exploited in the wild.

**How severe is CVE-2026-112006?** Medium severity, with a CVSS score of 6.5, published 18 October 2026.

**Which products and versions are affected?** Opentelemetry-Exporter-Otlp-Proto-Http 1.5.0 before 1.45.0.

**Is there a fix for CVE-2026-112006?** Yes: fixed in 1.45.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-112006 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-112006?** Check whether you run Opentelemetry-Exporter-Otlp-Proto-Http at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 1.45.0

## Technical details

The exporter improperly validates certificate configuration: when OTEL_EXPORTER_OTLP_CERTIFICATE environment variables are set to empty strings, TLS verification is disabled instead of being enforced with defaults. An attacker on the network can perform man-in-the-middle attacks to read or modify exported traces, metrics, logs, and headers without the application detecting the compromise. The fix is available in version 1.45.0.

## Affected products

- OpenTelemetry opentelemetry-exporter-otlp-proto-http 1.5.0 before 1.45.0

## Timeline

- 2026-10-18: disclosed

## References

- [https://pypi.org/](https://pypi.org/)
- [https://github.com/open-telemetry/opentelemetry-python/blob/v1.44.0/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py](https://github.com/open-telemetry/opentelemetry-python/blob/v1.44.0/exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py)