CVE-2025-26787

Medium

Description

An error in the SignServer container startup logic was found in Keyfactor SignServer versions prior to 7.2. The Admin CLI command used to configure Certificate access to the initial startup of the container sets a property of "allowany" to allow any user with a valid and trusted client auth certificate to connect. Admins can then set more restricted access to specific certificates. A logic error caused this admin CLI command to be run on each restart of the container instead of only the first startup as intended resetting the configuration to "allowany".

SeverityMedium
CVSS4.7
Exploit probability—
ProductKeyfactor Signserver
PublishedDec 22, 2025
First seenDec 22, 2025
Weakness typeCWE-642CWE-642

How to fix

Affected products

ProductAffected versionsFixed in
keyfactor signserverv < 7.27.2

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