---
id: CVE-2026-12566
title: >-
  BBOT: Server-Side Request Forgery (SSRF) in docker_pull module via
  WWW-Authenticate realm parsing
summary: >-
  BBOT: Server-Side Request Forgery (SSRF) in docker_pull module via
  WWW-Authenticate realm parsing
severity: low
cvss: 3.1
cwe:
  - CWE-20
  - CWE-918
vendor: bbot
product: bbot
affected:
  - 'bbot >= 2.0.0, <= 2.8.4'
patched:
  - bbot 2.8.5
published: '2026-06-18'
updated: '2026-06-18'
source: GHSA
sourceUrl: 'https://github.com/advisories/GHSA-3mp7-vp6j-2mxx'
references:
  - url: >-
      https://github.com/blacklanternsecurity/bbot/security/advisories/GHSA-3mp7-vp6j-2mxx
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-12566'
  - url: 'https://github.com/blacklanternsecurity/bbot/commit/c2f4bc0f4'
  - url: 'https://github.com/advisories/GHSA-3mp7-vp6j-2mxx'
tags:
  - ghsa
  - pip
epss: 0.00167
epssPercentile: 0.05281
ingestedAt: '2026-06-19T03:39:00.812Z'
ecosystem: pip
---

## Overview

The `docker_pull` module uses the `realm` parameter from a Docker registry's `WWW-Authenticate` response header as the authentication endpoint without validation. An attacker in a man-in-the-middle position between bbot and a Docker registry could modify this header to redirect the authentication request to an arbitrary endpoint, potentially leaking authentication tokens.

## Affected packages

- `bbot >= 2.0.0, <= 2.8.4`

## Remediation

Upgrade to a patched release:

- `bbot 2.8.5`