Cockpit Storaged CURL Option Injection via Tang Keyserver
CVE-2026-125672 Published on November 10, 2026
Cockpit: cockpit-storaged: tang keyserver address from an untrusted luks header clevis token reaches curl's argument vector as an option
A flaw was found in cockpit-storaged. A Tang keyserver address read from a clevis token in a LUKS header is concatenated into curl's argument vector without a "--" separator. An address beginning with "-" is parsed by curl as an option instead of a hostname, allowing an attacker who can attach a crafted LUKS/clevis block device (for example, a local unprivileged user with an active console or desktop login session) to have an administratively-privileged Cockpit user unknowingly trigger curl option injection when editing the device's Tang keyserver settings. This can lead to arbitrary file read or write as the Cockpit session user.
Vulnerability Analysis
CVE-2026-125672 is exploitable with local system access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Timeline
Reported to Red Hat.
Made public. 20 days later.
Weakness Type
What is an Argument Injection Vulnerability?
The software constructs a string for a command to executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.
CVE-2026-125672 has been classified to as an Argument Injection vulnerability or weakness.
Products Associated with CVE-2026-125672
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