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Public proof of conceptFix available

CVE-2026-27811

A public proof of concept exists; no exploitation attested.

  • Published2026-03-18
  • Fixed in8.2.6.3
  • WeaknessCWE-77 · CWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-03-1800:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-27811?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-27811?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Roxy-wi
BranchAffectedFixed in
8.2< 8.2.6.38.2.6.3

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Roxy-wi to 8.2.6.3

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionpoc2026-03-18
  • OpenCVESSVC decisionpoc—
  • CNACVSS 3.18.8read 2026-10-23
  • CNAweakness (CWE)CWE-77, CWE-78read 2026-10-23
  • FIRST EPSSEPSS score3.1 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-03-18
Last Modified
2026-06-17
NVD status
Analyzed

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.

Is CVE-2026-27811 actively exploited?

A proof-of-concept exploit exists for CVE-2026-27811, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-27811?

CVE-2026-27811 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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