CVE-2026-68519 nicolargo CVE debrief

Who should care

Defenders responsible for Glances deployments, especially those using alert features, should assess exposure and prioritize patching to prevent potential command execution. This includes verifying configurations, monitoring for suspicious activity, and ensuring that the tool is updated to version 4.5.6 or later. Security teams and vulnerability management teams should also review the configurations and impact of this vulnerability on their systems.

Why it matters

CVE-2026-68519 is a high-severity vulnerability in Glances that allows for arbitrary command execution when an alert triggers. Defenders should prioritize patching, assess exposure, and monitor for suspicious activity. The issue is fixed in Glances version 4.5.6.

• Potential for arbitrary command execution on alert trigger
• Need to verify configurations and monitor for suspicious activity
• Patching to version 4.5.6 or later is recommended

Technical summary

The `GlancesActions.run()` method in Glances versions prior to 4.5.6 ignores the `--disable-config-exec` flag for on-alert actions, allowing for insecure use of shell operators. This enables configured redirection, command chaining, or pipes to execute when an alert triggers, potentially leading to arbitrary command execution. The issue is fixed in Glances version 4.5.6, which addresses this security vulnerability by properly handling the `--disable-config-exec` flag. Defenders should prioritize patching to version 4.5.6 or later to prevent potential command execution.

Defensive priority

Defenders should prioritize patching to prevent potential command execution. Assess exposure for Glances deployments, especially where alerts are used. Verify configurations and monitor for suspicious activity.

Recommended defensive actions

• Patch Glances to version 4.5.6 or later
• Review and restrict alert configurations
• Monitor for suspicious activity
• Verify configurations for potential exposure
• Assess Glances deployments for alert feature usage
• Review compensating controls for exposed systems
• Track exceptions and retest remediated assets

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in Glances, an open-source system monitoring tool. The issue, fixed in version 4.5.6, allows for arbitrary command execution when an alert triggers due to insecure use of shell operators in the `GlancesActions.run()` method. However, specific details on exploitation or impact are limited. Defenders should verify configurations, monitor for suspicious activity, and prioritize patching to prevent potential command execution. The CVE was published on 2026-08-17T18:18:06.61

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.