Skip to main content

Sylius CVE-2020-15245

MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2020-10-19 security-advisories@github.com
4.3
CVSS 3.1 · NVD
View

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Output encoding, context-aware escaping
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Execution

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required.

Exploit ScenarioDerived

A remote attacker could inject malicious scripts into web pages viewed by other users by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 0.6% exploitation probability (EPSS)

Get an e-mail when this CVE is exploited, patched or re-scored. Free account.

Alert me

AnalysisAI

In Sylius before versions 1.6.9, 1.7.9 and 1.8.3, the user may register in a shop by email mail@example.com, verify it, change it to the mail another@domain.com and stay verified and enabled. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. This Cross-Site Scripting (XSS) vulnerability could allow attackers to inject malicious scripts into web pages viewed by other users.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Affected Packages

composer sylius/sylius fix: 1.6.9, 1.7.9, 1.8.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in composer

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. In Sylius before versions 1.6.9, 1.7.9 and 1.8.3, the user may register in a shop by email mail@example.com, verify it, change it to the mail another@domain.com and stay verified and enabled. This may lead to having accounts addressed to totally different emails, that were verified. Note, that this way one is not able to take over any existing account (guest or normal one). The issue has been patched in Sylius 1.6.9, 1.7.9 and 1.8.3. As a workaround, you may resolve this issue on your own by creating a custom event listener, which will listen to the sylius.customer.pre_update event. You can determine that email has been changed if customer email and user username are different. They are synchronized later on. Pay attention, to email changing behavior for administrators. You may need to skip this logic for them. In order to achieve this, you should either check master request path info, if it does not contain /admin prefix or adjust event triggered during customer update in the shop. You can find more information on how to customize the event here. Affected products include: Sylius.

Know when Sylius gets its next vulnerability

  • Watch products and get an email when something new is published
  • Check this CVE against your own stack and servers
  • Exploit and PoC references, threat intelligence from 22 sources

No credit card · 7-day full trial

Severity by source

NVD PRIMARY 4.3 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

DescriptionNVD

In Sylius before versions 1.6.9, 1.7.9 and 1.8.3, the user may register in a shop by email mail@example.com, verify it, change it to the mail another@domain.com and stay verified and enabled. This may lead to having accounts addressed to totally different emails, that were verified. Note, that this way one is not able to take over any existing account (guest or normal one). The issue has been patched in Sylius 1.6.9, 1.7.9 and 1.8.3. As a workaround, you may resolve this issue on your own by creating a custom event listener, which will listen to the sylius.customer.pre_update event. You can determine that email has been changed if customer email and user username are different. They are synchronized later on. Pay attention, to email changing behavior for administrators. You may need to skip this logic for them. In order to achieve this, you should either check master request path info, if it does not contain /admin prefix or adjust event triggered during customer update in the shop. You can find more information on how to customize the event here.

Threat Intelligence Overview

EPSS Score
0.6%
Top 54% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 0.6%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

23
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +22
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

Affected Products (CPE)NVD

cpe:2.3:a:sylius:sylius:*:*:*:*:*:*:*:*
cpe:2.3:a:sylius:sylius:*:*:*:*:*:*:*:*
cpe:2.3:a:sylius:sylius:*:*:*:*:*:*:*:*

More in Sylius

View all
CVE-2024-57610 HIGH POC
7.5 Feb 06

A rate limiting issue in Sylius v2.0.2 allows a remote attacker to perform unrestricted brute-force attacks on user acco

CVE-2020-15146 HIGH POC
8.8 Aug 20

In SyliusResourceBundle before versions 1.3.14, 1.4.7, 1.5.2 and 1.6.4, request parameters injected inside an expression

CVE-2020-15143 HIGH POC
8.8 Aug 20

In SyliusResourceBundle before versions 1.3.14, 1.4.7, 1.5.2 and 1.6.4, rrequest parameters injected inside an expressio

CVE-2022-24743 HIGH POC
8.2 Mar 14

Sylius is an open source eCommerce platform. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable,

CVE-2024-29376 MEDIUM POC
6.4 Apr 22

Sylius 1.12.13 is vulnerable to Cross Site Scripting (XSS) via the "Province" field in Address Book. Rated medium severi

CVE-2022-24749 MEDIUM POC
6.1 Mar 14

Sylius is an open source eCommerce platform. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitabl

CVE-2022-24752 CRITICAL
9.8 Mar 15

SyliusGridBundle is a package of generic data grids for Symfony applications. Rated critical severity (CVSS 9.8), this v

CVE-2026-31824 HIGH
8.2 Mar 10

Sylius eCommerce Framework is vulnerable to a race condition in promotion and coupon usage limit enforcement, where conc

CVE-2026-68500 HIGH
7.5 Jul 30

Payment-authorization bypass in the Sylius Mollie Plugin (versions before 2.2.8, 3.2.4, and 3.3.1) lets an unauthenticat

CVE-2021-41120 HIGH
7.5 Oct 05

sylius/paypal-plugin is a paypal plugin for the Sylius development platform. Rated high severity (CVSS 7.5), this vulner

CVE-2026-108724 MEDIUM
6.9 Oct 11

Unauthenticated remote attackers can read unmoderated and rejected product reviews on Sylius storefronts through 2.3.0 b

CVE-2026-68501 MEDIUM
6.5 Jul 30

Sequential integer order ID enumeration in Sylius MolliePlugin exposes customer PII across all orders without authentica

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy