---
title: "CVE-2026-45404\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-45404?format=md
keywords: index, follow
---

# CVE-2026-45404

Publication date 24 August 2026

Last updated 2 September 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

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## Description

OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version
0.11.0 through 1.44.0, the OpenTracing bridge's bridgeSpan contains an
unsynchronized extraBaggageItems map which can cause a panic. Because Go
maps are not safe for concurrent read/write access, concurrent
SetBaggageItem and correlation.MapFromContext calls on the same hooked
bridgeSpan can trigger a fatal runtime error—such as concurrent map read
and map write or concurrent map iteration and map write—terminating the
process and causing denial of service. This issue is fixed in version
1.45.0.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| golang-opentelemetry-otel | 26.04 LTS resolute | Needs evaluation |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v4.0

**Base score**

5.9 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Local |
  | Attack complexity | Low |
  | Attack requirements | Present |
  | Privileges required | None |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | None |
  | Vulnerable system - Integrity impact | None |
  | Vulnerable system - Availability impact | High |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.9 · Medium |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-45404)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-45404)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-45404)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-45404)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-45404>
* <https://github.com/open-telemetry/opentelemetry-go/security/advisories/GHSA-42cj-99w8-cp2p>