Symlink Attack Affecting opencryptoki/opencryptoki package, versions [0,3.27.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published25 Jan 2026
- disclosed22 Jan 2026
- creditpavelkohout396
Introduced: 22 Jan 2026
CVE-2026-23893 (opens in a new tab)How to fix?
Upgrade opencryptoki/opencryptoki to version 3.27.0 or higher.
Overview
Affected versions of this package are vulnerable to Symlink Attack via improper resolution of symbolic links before file access in the process. An attacker can gain unauthorized access to sensitive files or escalate privileges by planting symlinks in group-writable directories and leveraging administrative operations that change file ownership or permissions.
Note: This is only exploitable if a user with token-group membership can plant symlinks and an administrator subsequently runs a PKCS#11 application or administrative tool that performs chown on files inside the token directory during normal maintenance.
Workaround
This vulnerability can be mitigated by restricting membership of the token-group to only trusted administrators.