CVE-2026-25827
UnknownSummary
In Keyfactor SignServer before 7.6.0, several properties were identified to have no restrictions on what path they can be set to by an admin user. Setting these properties to specific file paths can reveal information to the client side. This includes ATTRIBUTESFILE in PKCS11CryptoToken, KEYSTOREPATH in KeyStoreCryptoToken, and TRUSTSTOREPATH in RenewalWorker.
Risk Assessment
An admin (or someone with admin rights) can confirm the existence or non-existence of files on the system, which may aid further attacks or breach confidentiality.
Recommendation
Upgrade SignServer to 7.6.0 or later and restrict admin privileges and validate paths for these properties.
Other vulnerabilities in Keyfactor SignServer
See all- CVE-2026-25826Unknown
In Keyfactor SignServer before 7.6.0, the ATTRIBUTESFILE attribute in PKCS11CryptoToken can be set to a readable file but not an accepted file. In this case, an error is thrown which also prints the file content to the application server log. This allows a user with both SignServer admin access and log read access to read files accessible by the local JBoss user.
- CVE-2026-25825Unknown
In Keyfactor SignServer before 7.6.0, the output file for SignerStatusReportWorker can be set to any path, even one pointing to an existing file. This allows a user with admin access to write files in arbitrary directories and potentially overwrite files accessible by the local JBoss user.
Original NVD description (English source)
An issue was discovered in Keyfactor SignServer before 7.6.0. A number of properties were identified to not have any restrictions to what path they can be set to by an admin user. Setting these properties to specific file paths can reveal information to the client side. Three specific properties were identified: The property ATTRIBUTESFILE in PKCS11CryotoToken can be set to a readable but not an accepted (i.e., recognized with attributes) file. In this case an error is thrown, confirming the existence of the file. The property KEYSTOREPATH in KeyStoreCryptoToken can be set to a non-existing file that will return an error confirming to the client side that the file does not exist. The property TRUSTSTOREPATH in RenewalWorker can be set to any path (without any restrictions) by an admin user. In the case that the provided path points to an existing file, readable by the user running the application server, but is not a recognized PEM format, it returns this as an error to the client side, confirming the existences of the file.