Is this vulnerability remotely exploitable?

Yes. Any authenticated organization member in Zulip Cloud could exploit it remotely via the billing-related API, without needing elevated billing or admin privileges.

What level of access did an attacker need?

The attacker needed a valid account in the target organization with standard member privileges. No special billing or administrative roles were required to initiate the vulnerable flow.

What is the safest general fix pattern for this issue?

The most robust approach is to enforce strict, role-based authorization on all billing and payment-modifying endpoints, and to ensure that external payment flows (like Stripe Checkout) are cryptographically bound to a user identity and role that is re-validated when state changes are applied.

Severity:

HIGH RISK

(7.1)

Missing Authorization Check (CWE-863) in Zulip Cloud Billing Card Update Session API

CVE-2026-25741

Published:

Feb 26, 2026

Status:

Awaiting Analysis

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:

Missing Authorization / Access Control

CWE:

CWE-863

Impact:

Unauthorized Modification of Billing Configuration

Severity:

HIGH RISK

(7.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Missing Authorization / Access Control

CWE:

CWE-863

Impact:

Unauthorized Modification of Billing Configuration

Severity:

HIGH RISK

(7.1)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

START 14 DAYS FREE TRIAL

BOOK A DEMO

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Missing Authorization Check (CWE-863) in Zulip Cloud Billing Card Update Session API

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

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare

Product

Pricing

Company

Legal

Developers

Compare