Is this vulnerability remotely exploitable, or does the attacker need local access?

It is remotely exploitable. An attacker only needs a way to deliver a crafted link or content to an authenticated staff user or member and convince them to open it in a browser that loads the vulnerable Portal script.

What level of access does an attacker need to exploit this issue?

The attacker does not need prior access to the Ghost installation itself. They need the ability to influence what links a victim might click (for example, via email, messaging, or posts), while the victim must already be authenticated to the Ghost site.

What is the safest general fix pattern for developers maintaining custom or self-hosted Portal builds?

The safest pattern is to ensure that all user-controlled values flowing into Portal templates are contextually encoded by default, avoid raw HTML injection APIs, and centralize any necessary HTML sanitization on a strict allowlist. Regularly rebasing custom Portal builds on upstream versions that have addressed known XSS issues further reduces risk.

Severity:

HIGH RISK

(8.8)

Stored Cross-Site Scripting (CWE-79) in Ghost Portal Member Flows

CVE-2026-24778

Published:

Jan 27, 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-78

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

Remote Code Execution

March 7, 2026

CWE-89

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Account Takeover and Privilege Abuse via Stored XSS

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Account Takeover and Privilege Abuse via Stored XSS

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Stored Cross-Site Scripting (CWE-79) in Ghost Portal Member Flows

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

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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