---
id: CVE-2020-26213
aliases:
  - GHSA-jhj6-5mh6-4pvf
  - GO-2022-0903
title: Denial-of-Service within Docker container
summary: Denial-of-Service within Docker container
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: teler
product: ktbs.dev/teler
ecosystem: go
affected:
  - ktbs.dev/teler < 0.0.1
patched:
  - ktbs.dev/teler 0.0.1
published: '2021-05-24'
updated: '2026-07-08'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-jhj6-5mh6-4pvf'
references:
  - url: 'https://github.com/kitabisa/teler/security/advisories/GHSA-jhj6-5mh6-4pvf'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2020-26213'
  - url: >-
      https://github.com/kitabisa/teler/commit/ec6082049dba9e44a21f35fb7b123d42ce1a1a7e
  - url: 'https://github.com/kitabisa/teler'
tags:
  - osv
  - go
epss: 0.01429
epssPercentile: 0.71887
ingestedAt: '2026-07-09T18:56:36.575Z'
---

## Overview

### Impact
If you run teler inside a Docker container and encounter `errors.Exit` function, it will cause denial-of-service (`SIGSEGV`) because it doesn't get process ID and process group ID of teler properly to kills.

### Specific Go Packages Affected
ktbs.dev/teler/pkg/errors

### Patches
Upgrade to the >= 0.0.1 version.

### Workarounds
N/A

### References
- https://github.com/kitabisa/teler/commit/ec6082049dba9e44a21f35fb7b123d42ce1a1a7e

### For more information
If you have any questions or comments about this advisory:
* Open an issue in [Issues Section](https://github.com/kitabisa/teler/issues)
* Email us at [infosec@kitabisa.com](mailto:infosec@kitabisa.com)


## Affected packages

- `ktbs.dev/teler < 0.0.1`

## Remediation

Upgrade to a patched release:

- `ktbs.dev/teler 0.0.1`