CVE-2026-27811: Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers

Q: How do I fix CVE-2026-27811?

roxy-wi: upgrade to 8.2.6.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-27811 being exploited?

CVE-2026-27811 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-27811 affect?

CVE-2026-27811 affects roxy-wi. Severity is high (CVSS 8.8). 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/ / /show` endpoint, allowed authenticated us

This week

HIGH 8.8WATCHLISTUPGRADE

CVE-2026-27811 is a high-severity flaw (CVSS 8.8) affecting roxy-wi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-77, CWE-78
Published	2026-03-18
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: roxy-wi

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-18 00:16 UTCPublished CVE record published
2026-06-17 10:27 UTCUpdated Record last modified

roxy-wi roxy-wi UPGRADE

Affected: < 8.2.6.3

Fixed in: 8.2.6.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy roxy-wi || rpm -q roxy-wi || roxy-wi --version

2. UPGRADE to 8.2.6.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade roxy-wi

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade roxy-wi

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora ELN · fonttools · FIXED · 4.68.0-1.eln159 · FEDORA-2026-37fa4b964c · source

sudo dnf upgrade --advisory=FEDORA-2026-37fa4b964c

Fedora 46 · fonttools · FIXED · 4.68.0-1.fc46 · FEDORA-2026-65d6c01c75 · source

sudo dnf upgrade --advisory=FEDORA-2026-65d6c01c75

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/roxy-wi/roxy-wi/security/advisories/GHSA-jvmv-cw47-jh77

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-27811?

roxy-wi: upgrade to 8.2.6.3. Exact commands for each OS are on this page.

Is CVE-2026-27811 being exploited?

CVE-2026-27811 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-27811 affect?

CVE-2026-27811 affects roxy-wi. Severity is high (CVSS 8.8). 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 us

How urgent is CVE-2026-27811?

Priority 61/100. High severity; Public exploit reference; On your watchlist

Software pages

nginx vulnerabilities · HAProxy vulnerabilities

Related CVEs

CVE-2026-33208 HIGH 8.8 UPGRADE Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers
CVE-2026-33078 CRITICAL 9.8 UPGRADE Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers
CVE-2026-33077 HIGH 7.5 UPGRADE Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers
CVE-2026-33076 CRITICAL 9.8 UPGRADE Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers

References

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