CVE-2026-76241: stigmem Plugin Signature Enforcement Bypass via Configuration
stigmem-node 0.9.0a1 allows plugin signature enforcement to be disabled via a single configuration flag without a second explicit acknowledgment. If that setting is carried into an environment where plugin directories are writable by less-trusted users, unsigned (potentially malicious) plugin code could be loaded and executed, resulting in arbitrary code execution. Fixed in 0.9.0a2, which requires a second explicit acknowledgment to disable signature enforcement.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
stigmem-nodeto a version that resolves this vulnerability.Fixed in 0.9.0a2 - Configuration
Ensure plugin signature enforcement remains enabled; upgrade to stigmem-node 0.9.0a2 and require the second explicit acknowledgment before disabling signature enforcement to prevent unsigned plugin loading when plugin directories are writable by less-trusted users.
stigmem Plugin Signature Enforcement signature enforcement disable flag (requires second explicit acknowledgment) = enabled
Event History
Frequently Asked Questions
Which deployments are realistically exposed to arbitrary code execution?
Deployments of stigmem-node 0.9.0a1 are exposed when plugin signature enforcement has been disabled through the configuration flag and plugin directories are writable by less-trusted users. In that situation, an unsigned malicious plugin may be loaded and executed.
What must an attacker be able to do to exploit this issue?
An attacker needs the ability to place an unsigned plugin in a plugin directory that the affected stigmem-node instance can load from. This is relevant where those directories are writable by less-trusted users after signature enforcement has been disabled.
Is the default configuration affected?
The issue requires signature enforcement to be disabled using a configuration flag. The provided information does not indicate that signature enforcement is disabled by default.
What should be done if an immediate upgrade is not possible?
Keep plugin signature enforcement enabled and ensure plugin directories are not writable by less-trusted users. Upgrading to 0.9.0a2 adds a required second explicit acknowledgment before signature enforcement can be disabled.