Credential exposure via hostname prefix matching
Published Apr 30, 2026 · Updated Apr 30, 2026
Credential exposure in Apple container 0.12.1 through 0.12.2 allows remote attackers to read registry credentials over HTTP. The isInternalHost function uses string-prefix matching, so names such as localhost.evil.com are incorrectly treated as internal and assigned HTTP. Exploitation requires interaction with an attacker-controlled registry under the default --scheme auto setting; login, pull, and push credentials can be disclosed.
Summary
What happened
Credential exposure in Apple container 0.12.1 through 0.12.2 allows remote attackers to read registry credentials over HTTP. The isInternalHost function uses string-prefix matching, so names such as localhost.evil.com are incorrectly treated as internal and assigned HTTP. Exploitation requires interaction with an attacker-controlled registry under the default --scheme auto setting; login, pull, and push credentials can be disclosed.
The record
- CVE
- CVE-2026-28909
- Published
- Apr 30, 2026
- Updated
- Apr 30, 2026
- Vendor
- Apple
- Product
- macOS
- Classifications
- CWE-522
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 30, 2026CVE publishedPublication date reported by the CVE source.
- Apr 30, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.12.1 <0.12.3
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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