CVE-2026-25827: n/a
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.
AI Analysis
Technical Summary
Keyfactor SignServer before version 7.6.0 contains an information disclosure vulnerability where certain admin-configurable properties related to file paths lack restrictions. Specifically, the ATTRIBUTESFILE property in PKCS11CryptoToken can be set to a readable but unrecognized file, causing an error that confirms the file's existence. The KEYSTOREPATH property in KeyStoreCryptoToken can be set to a non-existent file, returning an error that confirms the file does not exist. The TRUSTSTOREPATH property in RenewalWorker can be set to any path; if the file exists and is readable but not a recognized PEM format, an error confirming the file's existence is returned to the client. These behaviors allow an admin user to gain information about the server's file system through error responses.
Potential Impact
The vulnerability allows an admin user to confirm the existence or non-existence of arbitrary files on the server by setting specific properties and observing error messages. This constitutes an information disclosure issue but does not directly enable code execution or privilege escalation. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict admin access to trusted personnel only to prevent misuse of these properties. Monitor vendor communications for updates regarding official fixes or mitigations.
CVE-2026-25827: n/a
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Keyfactor SignServer before version 7.6.0 contains an information disclosure vulnerability where certain admin-configurable properties related to file paths lack restrictions. Specifically, the ATTRIBUTESFILE property in PKCS11CryptoToken can be set to a readable but unrecognized file, causing an error that confirms the file's existence. The KEYSTOREPATH property in KeyStoreCryptoToken can be set to a non-existent file, returning an error that confirms the file does not exist. The TRUSTSTOREPATH property in RenewalWorker can be set to any path; if the file exists and is readable but not a recognized PEM format, an error confirming the file's existence is returned to the client. These behaviors allow an admin user to gain information about the server's file system through error responses.
Potential Impact
The vulnerability allows an admin user to confirm the existence or non-existence of arbitrary files on the server by setting specific properties and observing error messages. This constitutes an information disclosure issue but does not directly enable code execution or privilege escalation. There are no reports of active exploitation in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict admin access to trusted personnel only to prevent misuse of these properties. Monitor vendor communications for updates regarding official fixes or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-02-06T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6aa956ec55bf5e2cf5f0946e
Added to database: 09/15/2026, 14:32:12 UTC
Last enriched: 09/15/2026, 14:47:00 UTC
Last updated: 09/16/2026, 02:10:22 UTC
Views: 9
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