Registry token disclosure via unvalidated authentication realm
Published Jun 17, 2026 · Updated Jun 17, 2026
SSRF in the docker_pull module in Black Lantern Security BBOT 2.0.0 through 2.8.4 allows attackers to obtain registry authentication tokens. The module accepts the realm value from a registry's WWW-Authenticate header as an authentication URL and requests it without validating the destination. Exploitation requires man-in-the-middle attackers to alter a registry response during a user-initiated Docker image pull, causing token disclosure to the substituted endpoint.
Summary
What happened
SSRF in the docker_pull module in Black Lantern Security BBOT 2.0.0 through 2.8.4 allows attackers to obtain registry authentication tokens. The module accepts the realm value from a registry's WWW-Authenticate header as an authentication URL and requests it without validating the destination. Exploitation requires man-in-the-middle attackers to alter a registry response during a user-initiated Docker image pull, causing token disclosure to the substituted endpoint.
The record
- CVE
- CVE-2026-12566
- Published
- Jun 17, 2026
- Updated
- Jun 17, 2026
- Vendor
- Black Lantern Security
- Product
- BBOT
- Classifications
- CWE-918, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 17, 2026CVE publishedPublication date reported by the CVE source.
- Jun 17, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=2.0.0 <=<=2.8.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
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Your stack
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