CVE-2026-12566
BBOT: Server-Side Request Forgery (SSRF) in docker_pull module via WWW-Authenticate realm parsing
3.1
LOW
CVSS 3.1
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.
How to fix CVE-2026-12566
To remediate CVE-2026-12566, upgrade the affected package to a fixed version below.
- —upgrade to 2.8.5 or later
Is CVE-2026-12566 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-12566.
Affected packages (1)
- >= 2.0.0, < 2.8.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |