7.5

CVSS Score

3.0

-

CVSS Score

Basic Information

Concerned about an active attack path?

Talk to our security experts and see Miggo in action.

Miggo Vulnerability Database

→

CVE-2019-7849

CVE-2019-7849: Magento 2 Community Edition Session Fixation Check

A defense-in-depth check was added to mitigate inadequate session validation handling by 3rd party checkout modules. This impacts Magento 1.x prior to 1.9.4.2, Magento Commerce prior to 1.14.4.2, Magento 2.1 prior to 2.1.18, Magento 2.2 prior to 2.2.9 and Magento 2.3 prior to 2.3.2.

(GitHub Advisory)

Miggo Vulnerability Database

→

CVE-2019-7849

CVE-2019-7849:

7.5

CVSS Score

3.0

-

CVSS Score

Basic Information

Is this CVE running in your environment?

Easily map the attack path and prioritize which CVEs are a threat to your organization

Validate Exposure

Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
magento/community-edition	composer	>= 2.1.0, < 2.1.18	2.1.18
magento/community-edition	composer	>= 2.2.0, < 2.2.9	2.2.9
magento/community-edition	composer	>= 2.3.0, < 2.3.2	2.3.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability (CWE-384) involves session fixation due to inadequate validation in third-party checkout modules. The patch added defense-in-depth checks in core session management functions. Key functions like SessionManager::start() and Customer\Session::regenerateId() are central to session lifecycle management. Their improper handling of session IDs (e.g., not regenerating after login) would directly enable fixation. The Checkout\Session::loadCustomerQuote() method is critical for cart operations, and missing session validation here could perpetuate a fixed session. While explicit patch code isn't provided, Magento's session fixation mitigation logically targets these functions, as they control session initialization, regeneration, and critical workflow integration.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

Vulnerability Intelligence
Miggo AI

Unlock WAF rules for this CVE

Generate vendor-ready rules for the observed attack patterns, plus reasoning and safe deployment guidance

Get WAF rules

WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.