CVE-2026-12566
SSRF via unvalidated WWW-Authenticate realm in docker_pull module
Description
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.
INFO
Published Date :
June 17, 2026, 9:48 p.m.
Last Modified :
June 17, 2026, 9:48 p.m.
Remotely Exploit :
Yes !
Source :
BLSOPS
Affected Products
The following products are affected by CVE-2026-12566
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | LOW | 27b6da8a-f51d-48d9-9eef-9b7f3405d20d |
Solution
- Validate the realm parameter from the WWW-Authenticate header.
- Avoid using it directly as an authentication endpoint.
- Implement strict validation rules for registry endpoints.
- Consider using a secure communication channel.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-12566 vulnerability anywhere in the article.