How severe is CVE-2026-27811?

CVE-2026-27811 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-27811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27811?

CVE-2026-27811 affects Roxy-wi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27811?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-27811 have an EU (EUVD) identifier?

Yes. CVE-2026-27811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12679.

When was CVE-2026-27811 published?

CVE-2026-27811 was published on 2026-03-18 and last updated on 2026-06-17.

CVE-2026-27811

CVE-2026-27811 is a high-severity vulnerability in Roxy-wi with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12679
Weakness: CWE-77
Affected product: Roxy-wi
Published: 2026-03-18
Last modified: 2026-06-17

Description

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.3, a command injection vulnerability exists in the `/config/compare/<service>/<server_ip>/show` endpoint, allowed authenticated users to execute arbitrary system commands on the app host. The vulnerability exists in `app/modules/config/config.py` on line 362, where user input is directly formatted in the template string that is eventually executed. Version 8.2.6.3 fixes the issue.

Frequently asked questions

What is CVE-2026-27811?: Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.3, a command injection vulnerability exists in the `/config/compare/<service>/<server_ip>/show` endpoint, allowed authenticated users to execute arbitrary system commands on the app host. The vulnerability exists in `app/modules/config/config.py` on line 362, where user input is directly formatted in the template string that is eventually executed. Version 8.2.6.3 fixes the issue.
How severe is CVE-2026-27811?: CVE-2026-27811 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-27811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27811?: CVE-2026-27811 affects Roxy-wi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27811?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-27811 have an EU (EUVD) identifier?: Yes. CVE-2026-27811 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12679.
When was CVE-2026-27811 published?: CVE-2026-27811 was published on 2026-03-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:roxy-wi:roxy-wi:*:*:*:*:*:*:*:*

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