Severity:

CRITICAL RISK

(9.3)

Reflected XSS (CWE-79) in Discourse Color Scheme

CVE-2026-55674

Published:

Aug 17, 2026

Status:

Received

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Vulnerability Type

Category:

Cross-Site Scripting

CWE:

CWE-79

Impact:

Arbitrary JavaScript Execution

Severity:

CRITICAL RISK

(9.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting

CWE:

CWE-79

Impact:

Arbitrary JavaScript Execution

Severity:

CRITICAL RISK

(9.3)

CVSS Version:

3.1

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CWE-74;CWE-89

HIGH RISK

(7.3)

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Unauthorized database access and manipulation

CWE-74;CWE-89

HIGH RISK

(7.3)

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