Is this vulnerability remotely exploitable?

Yes. If an attacker can remotely upload or control content that is later viewed in the RustFS Console, they can exploit the stored XSS without direct access to the console host itself. The attack completes when an administrator's browser renders the malicious content.

Does an attacker need administrative access to exploit this?

No. The attacker typically only needs a way to introduce malicious content into the system (for example, via a lower-privileged account or exposed upload mechanism). Administrative access is required only on the victim side—an admin must view the malicious preview for the exploit to run and for their session to be compromised.

What is the safest general fix pattern for this issue?

The safest pattern is to treat all previewed or user-controlled content as untrusted, apply strict contextual output encoding, and sanitize any HTML-like content before rendering. Complement this with a strong CSP and, where possible, render previews in sandboxed contexts isolated from the main console origin.

Severity:

CRITICAL RISK

(9.0)

Stored Cross-Site Scripting (CWE-79) in RustFS Management Console

CVE-2026-27822

Published:

Feb 24, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Account Takeover and Management Console Compromise

Severity:

CRITICAL RISK

(9.0)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Account Takeover and Management Console Compromise

Severity:

CRITICAL RISK

(9.0)

CVSS Version:

3.1

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Stored Cross-Site Scripting (CWE-79) in RustFS Management Console

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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