8.3
HIGH CVSS 4.0
CVE-2026-9591
Cross-Site Request Forgery (CSRF) in SimplCommerce News Module
Description

Cross-site request forgery (CSRF) in NewsItemApiController in SimplCommerce prior to commit 6233d73e allows an unauthenticated remote attacker to create or modify news items as an administrator via a crafted form submitted to `/api/news-items`, due to missing anti-CSRF protection.

INFO

Published Date :

June 17, 2026, 2:18 p.m.

Last Modified :

June 18, 2026, 2:17 p.m.

Remotely Exploit :

Yes !

Source :

596c5446-0ce5-4ba2-aa66-48b3b757a647
Affected Products

The following products are affected by CVE-2026-9591 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Simplcommerce simplcommerce
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 4.0 HIGH 596c5446-0ce5-4ba2-aa66-48b3b757a647
CVSS 4.0 HIGH 596c5446-0ce5-4ba2-aa66-48b3b757a647
CVSS 4.0 MEDIUM 596c5446-0ce5-4ba2-aa66-48b3b757a647
Solution
Implement anti-CSRF tokens and validate them on the server-side to prevent unauthorized requests.
  • Implement anti-CSRF tokens.
  • Validate tokens on server-side.
  • Ensure proper session management.
  • Update to the latest secure version.
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-9591.

URL Resource
https://github.com/simplcommerce/SimplCommerce/commit/6233d73e134c887fc3f3308d20710bec096d45e3
https://github.com/simplcommerce/SimplCommerce/pull/1150
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-9591 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-9591 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-9591 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2026-9591 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by 596c5446-0ce5-4ba2-aa66-48b3b757a647

    Jun. 18, 2026

    Action Type Old Value New Value
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Removed CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Jun. 17, 2026

    Action Type Old Value New Value
    Added SSVC {'id': 'CVE-2026-9591', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-17T15:01:59.128635Z'}
  • New CVE Received by 596c5446-0ce5-4ba2-aa66-48b3b757a647

    Jun. 17, 2026

    Action Type Old Value New Value
    Added Affected [{'repo': 'https://github.com/simplcommerce/SimplCommerce', 'vendor': 'simplcommerce', 'product': 'SimplCommerce', 'versions': [{'status': 'affected', 'changes': [{'at': '6233d73e', 'status': 'unaffected'}], 'version': '0', 'lessThan': '6233d73e', 'versionType': 'git'}], 'defaultStatus': 'affected'}]
    Added Description Cross-site request forgery (CSRF) in NewsItemApiController in SimplCommerce prior to commit 6233d73e allows an unauthenticated remote attacker to create or modify news items as an administrator via a crafted form submitted to `/api/news-items`, due to missing anti-CSRF protection.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CWE CWE-352
    Added Reference https://github.com/simplcommerce/SimplCommerce/commit/6233d73e134c887fc3f3308d20710bec096d45e3
    Added Reference https://github.com/simplcommerce/SimplCommerce/pull/1150
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.