CVE-2026-32201

6.5

MEDIUM CVSS 3.1

Microsoft SharePoint Server Improper Input Validation Vulnerability - [Actively Exploited]

Overview

Description

Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.

Details

INFO

Published Date :

April 14, 2026, 6:17 p.m.

Last Modified :

April 14, 2026, 7:37 p.m.

Remotely Exploit :

No

Source :

[email protected]

CISA Notification

CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Due Date: Apr 28, 2026

Alert Date: Apr 14, 2026 | 22 days ago

Description :

Microsoft SharePoint Server contains an improper input validation vulnerability that allows an unauthorized attacker to perform spoofing over a network.

Required Action :

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Known Ransomware Campaign Use:

Unknown

Notes :

https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-32201 ; https://nvd.nist.gov/vuln/detail/CVE-2026-32201

Impact

Affected Products

The following products are affected by CVE-2026-32201 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
1	Microsoft	sharepoint_server
2	Microsoft	sharepoint_server_2016
3	Microsoft	sharepoint_server_2019

: Total Affected Vendor : 1 | Products : 3

Scoring

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 3.1	MEDIUM				f38d906d-7342-40ea-92c1-6c4a2c6478c8
	CVSS 3.1	MEDIUM				[email protected]

Public PoC/Exploit Available at Github

CVE-2026-32201 has a 5 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References

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-2026-32201.

URL	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32201	Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-32201	US Government Resource

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-32201 is associated with the following CWEs:

CWE-20: Improper Input Validation

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-2026-32201 weaknesses.

CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters Using Leading 'Ghost' Character Sequences to Bypass Input Filters CAPEC-7: Blind SQL Injection Blind SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-23: File Content Injection File Content Injection CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-28: Fuzzing Fuzzing CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies Accessing/Intercepting/Modifying HTTP Cookies CAPEC-42: MIME Conversion MIME Conversion CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-52: Embedding NULL Bytes Embedding NULL Bytes CAPEC-53: Postfix, Null Terminate, and Backslash Postfix, Null Terminate, and Backslash CAPEC-63: Cross-Site Scripting (XSS) Cross-Site Scripting (XSS) CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic Using Slashes and URL Encoding Combined to Bypass Validation Logic CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-71: Using Unicode Encoding to Bypass Validation Logic Using Unicode Encoding to Bypass Validation Logic CAPEC-72: URL Encoding URL Encoding CAPEC-73: User-Controlled Filename User-Controlled Filename CAPEC-78: Using Escaped Slashes in Alternate Encoding Using Escaped Slashes in Alternate Encoding CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic Using UTF-8 Encoding to Bypass Validation Logic CAPEC-81: Web Server Logs Tampering Web Server Logs Tampering CAPEC-83: XPath Injection XPath Injection CAPEC-85: AJAX Footprinting AJAX Footprinting CAPEC-88: OS Command Injection OS Command Injection CAPEC-101: Server Side Include (SSI) Injection Server Side Include (SSI) Injection CAPEC-104: Cross Zone Scripting Cross Zone Scripting CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-109: Object Relational Mapping Injection Object Relational Mapping Injection CAPEC-110: SQL Injection through SOAP Parameter Tampering SQL Injection through SOAP Parameter Tampering CAPEC-120: Double Encoding Double Encoding CAPEC-135: Format String Injection Format String Injection CAPEC-136: LDAP Injection LDAP Injection CAPEC-153: Input Data Manipulation Input Data Manipulation CAPEC-182: Flash Injection Flash Injection CAPEC-209: XSS Using MIME Type Mismatch XSS Using MIME Type Mismatch CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-250: XML Injection XML Injection CAPEC-261: Fuzzing for garnering other adjacent user/sensitive data Fuzzing for garnering other adjacent user/sensitive data CAPEC-267: Leverage Alternate Encoding Leverage Alternate Encoding CAPEC-473: Signature Spoof Signature Spoof CAPEC-588: DOM-Based XSS DOM-Based XSS CAPEC-664: Server Side Request Forgery Server Side Request Forgery

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).

cyber-green/CVE_REPORT_2026

Cybersecurity Vulnerability Report: May 2026

Updated: 5 days, 2 hours ago

0 stars 0 fork 0 watcher

Born at : May 1, 2026, 9:36 a.m. This repo has been linked 15 different CVEs too.

B1tBit/CVE-2026-32201-exploit

A spoofing vulnerability exists in Microsoft SharePoint Server due to improper input validation. An unauthenticated attacker can send a specially crafted HTTP request to inject malicious JavaScript (reflected XSS), which executes in the security context of the SharePoint site.

Python

Updated: 1 week, 6 days ago

0 stars 0 fork 0 watcher

Born at : April 22, 2026, 9:29 p.m. This repo has been linked 1 different CVEs too.

kymotsujason/cybersec-daily

Just some cybersecurity news

Updated: 1 week, 6 days ago

0 stars 0 fork 0 watcher

Born at : April 21, 2026, 1:50 p.m. This repo has been linked 7 different CVEs too.

zulloper/cve-poc

CVE POC repo 자동 수집기

Python

Updated: 1 week, 4 days ago

10 stars 3 fork 3 watcher

Born at : June 8, 2025, 3:07 p.m. This repo has been linked 295 different CVEs too.

nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 1 week, 4 days ago

7667 stars 1247 fork 1247 watcher

Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 749 different CVEs too.

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

The following list is the news that have been mention CVE-2026-32201 vulnerability anywhere in the article.

europa.eu

Cyber Brief 26-05 - April 2026

Cyber Brief (April 2026)May 4, 2026 – Version: 1TLP:CLEARExecutive summaryWe analysed 366 open source reports for this Cyber Brief1.Relating to cyber policy and law enforcement, the Council of the Eur ...

Published Date: May 04, 2026 (1 day, 18 hours ago)

CybersecurityNews

1,370+ Microsoft SharePoint Servers Vulnerable to Spoofing Attacks Exposed Online

A critical spoofing vulnerability in Microsoft SharePoint Server, tracked as CVE-2026-32201, remains unpatched on over 1,370 internet-facing IP addresses worldwide, according to fresh scanning data fr ...

Published Date: Apr 22, 2026 (2 weeks ago)

Daily CyberSecurity

Critical 9.8 Webex Flaw Lets Attackers Impersonate Any User

In the modern enterprise, the Single Sign-On (SSO) portal is the master key to a company’s digital life. However, a recently disclosed critical vulnerability in Cisco Webex Services has revealed how a ...

Published Date: Apr 16, 2026 (2 weeks, 6 days ago)

Daily CyberSecurity

Chrome 147 Update: Google Patches Critical $90,000 ANGLE Flaw and 30 Other Security Gaps

Google has begun rolling out a high-stakes update for the Chrome stable channel, addressing a total of 31 security vulnerabilities, including five rated as Critical. The release, version 147.0.7727.10 ...

Published Date: Apr 16, 2026 (2 weeks, 6 days ago)

Daily CyberSecurity

Root Access via Admin: The 9.9 RCE Crisis Threatening Cisco ISE Networks

Cisco has issued an urgent security advisory following the discovery of high-stakes vulnerabilities in its Identity Services Engine (ISE) and Passive Identity Connector (ISE-PIC) platforms. The most s ...

Published Date: Apr 16, 2026 (2 weeks, 6 days ago)

Daily CyberSecurity

IoT Under Fire: Critical CVSS 10 Expression Injection Hits OpenRemote Platform

Security researchers have sounded a major alarm for the internet-of-things (IoT) sector as OpenRemote, a popular 100% open-source management platform, disclosed a maximum-severity vulnerability. The f ...

Published Date: Apr 15, 2026 (2 weeks, 6 days ago)

Daily CyberSecurity

No Patch Available: The CVSS 10 Flaw Turning AVideo into an Attacker’s Playground

AVideo, a versatile video streaming platform popular among content creators and businesses for hosting and monetizing content, is facing a security crisis. A critical vulnerability has been uncovered ...

Published Date: Apr 15, 2026 (2 weeks, 6 days ago)

The Hacker News

April Patch Tuesday Fixes Critical Flaws Across SAP, Adobe, Microsoft, Fortinet, and More

A number of critical vulnerabilities impacting products from Adobe, Fortinet, Microsoft, and SAP have taken center stage in April's Patch Tuesday releases. Topping the list is an SQL injection vulnera ...

Published Date: Apr 15, 2026 (2 weeks, 6 days ago)

Daily CyberSecurity

High-Severity Authentication Bypass Discovered in MinIO Storage

A significant security vulnerability has been identified in MinIO, the high-performance, S3-compatible object storage solution widely used for AI/ML and data-intensive workloads. The flaw, categorized ...

Published Date: Apr 15, 2026 (2 weeks, 6 days ago)

The Register

Ancient Excel bug comes out of retirement for active attacks

While Microsoft was rolling out its bumper Patch Tuesday updates this week, US cybersecurity agency CISA was readying an alert about a 17-year-old critical Excel flaw now under exploit. CISA confirmed ...

Published Date: Apr 15, 2026 (2 weeks, 6 days ago)

security.nl

Microsoft dicht actief aangevallen spoofinglek in SharePoint Server

Tijdens de patchdinsdag van april heeft Microsoft een actief aangevallen spoofinglek in SharePoint Server gedicht. De kwetsbaarheid (CVE-2026-32201) maakt het mogelijk voor een ongeauthenticeerde aanv ...