CVE-2026-113678 froxlor CVE debrief

Who should care

System administrators and security teams responsible for Froxlor installations, particularly those with versions before 2.3.15, should assess their exposure and prioritize upgrading to the latest version.

Why it matters

CVE-2026-113678 is a critical vulnerability in Froxlor that allows authenticated customers to potentially escalate privileges to root by abusing the traffic cron. System administrators and security teams should assess their exposure and prioritize upgrading to version 2.3.15 or later.

• Privilege escalation to root is possible
• Arbitrary host directories can be taken ownership of
• Traffic cron can be abused for exploitation

Technical summary

The vulnerability exists in the Statistics::makeChownWithNewStats function of Froxlor, allowing an authenticated customer to create a symlink to an arbitrary host directory, which can then be chowned to the customer's user, potentially leading to privilege escalation. The function does not properly validate the target of the symlink, allowing attackers to manipulate the chown operation. This vulnerability can be exploited by authenticated customers to gain elevated privileges. The CVE record and source item provide details on the vulnerability, including its CVSS score, and affected versions.

Defensive priority

High

Recommended defensive actions

• Upgrade to Froxlor version 2.3.15 or later
• Review and restrict access to the traffic cron
• Monitor for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description, CVSS score, and affected versions. Additional information is available from the vendor's advisory and technical description.

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.