# Opentelemetry-Api vulnerabilities

Source: https://junglewise.ai/threats/technologies/opentelemetry-opentelemetry-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/opentelemetry-opentelemetry-api.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Opentelemetry-Api: 1 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-126360, was published on 13 November 2026. 1 vulnerability in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 1
- Last 30 days: 2
- Last 90 days: 2
- All time: 3 (0 critical, 0 exploited in the wild)

## About Opentelemetry-Api

OpenTelemetry API is a library that provides interfaces for distributed tracing, metrics, and logs in applications.

## Latest Opentelemetry-Api vulnerabilities

- [CVE-2026-126360: OpenTelemetry Python ReDoS in traceparent parsing](https://junglewise.ai/threats/cve-2026-126360-opentelemetry-python-provides-the-python-api-and-sdk-for) (medium, CVSS 5.3, published 13 Nov 2026)
- [CVE-2026-114603: OpenTelemetry Python ReDoS in W3C tracestate parsing](https://junglewise.ai/threats/cve-2026-114603-opentelemetry-python-provides-the-python-api-and-sdk-for) (medium, CVSS 5.3, published 22 Oct 2026)
- [CVE-2026-40894: OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers](https://junglewise.ai/threats/cve-2026-40894-opentelemetry-dotnet-excessive-memory-allocation-when-parsing) (medium, CVSS 5.3, published 23 Apr 2026)

## Most severe Opentelemetry-Api vulnerabilities

- [CVE-2026-114603: OpenTelemetry Python ReDoS in W3C tracestate parsing](https://junglewise.ai/threats/cve-2026-114603-opentelemetry-python-provides-the-python-api-and-sdk-for) (medium, CVSS 5.3, published 22 Oct 2026)
- [CVE-2026-40894: OpenTelemetry dotnet: Excessive memory allocation when parsing OpenTelemetry propagation headers](https://junglewise.ai/threats/cve-2026-40894-opentelemetry-dotnet-excessive-memory-allocation-when-parsing) (medium, CVSS 5.3, published 23 Apr 2026)
- [CVE-2026-126360: OpenTelemetry Python ReDoS in traceparent parsing](https://junglewise.ai/threats/cve-2026-126360-opentelemetry-python-provides-the-python-api-and-sdk-for) (medium, CVSS 5.3, published 13 Nov 2026)

## Vulnerabilities per week

1 vulnerability in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 1 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 1 | 0 | 0 |

## Other Opentelemetry technologies

- [Opentelemetry-Ebpf-Instrumentation](https://junglewise.ai/threats/technologies/ebpf-instrumentation): 11 vulnerabilities
- [Opentelemetry](https://junglewise.ai/threats/technologies/opentelemetry): 8 vulnerabilities
- [Opentelemetry-Go](https://junglewise.ai/threats/technologies/opentelemetry-go): 7 vulnerabilities
- [Opentelemetry Otelhttp](https://junglewise.ai/threats/technologies/otelhttp): 6 vulnerabilities
- [OpenTelemetry Go SDK](https://junglewise.ai/threats/technologies/go-sdk): 5 vulnerabilities
- [Opentelemetry Java Instrumentation](https://junglewise.ai/threats/technologies/java-instrumentation): 3 vulnerabilities
- [Opentelemetry-Javaagent](https://junglewise.ai/threats/technologies/opentelemetry-javaagent): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Opentelemetry-Api vulnerabilities", https://junglewise.ai/threats/technologies/opentelemetry-opentelemetry-api, 13 November 2026.