CVE-2021-3742— Server-Side Request Forgery (SSRF) in chatwoot/chatwoot
Quick assessment
Affected
chatwoot chatwoot/chatwoot
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Chatwoot是Chatwoot开源的一个应用软件。客户参与套件，对讲、Zendesk、Salesforce 服务云等的开源替代方案。 Chatwoot 2.5.0之前版本存在代码问题漏洞，该漏洞源于存在服务器端请求伪造(SSRF)漏洞，允许攻击者上传包含恶意SSRF负载的SVG文件，可能导致主机重定向。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-3742
Vulnerability Information
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Vulnerability Title
Server-Side Request Forgery (SSRF) in chatwoot/chatwoot
Source: CVE Program / CVE List V5
Vulnerability Description
A Server-Side Request Forgery (SSRF) vulnerability was discovered in chatwoot/chatwoot, affecting all versions prior to 2.5.0. The vulnerability allows an attacker to upload an SVG file containing a malicious SSRF payload. When the SVG file is used as an avatar and opened in a new tab, it can trigger the SSRF, potentially leading to host redirection.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Chatwoot 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chatwoot是Chatwoot开源的一个应用软件。客户参与套件，对讲、Zendesk、Salesforce 服务云等的开源替代方案。 Chatwoot 2.5.0之前版本存在代码问题漏洞，该漏洞源于存在服务器端请求伪造(SSRF)漏洞，允许攻击者上传包含恶意SSRF负载的SVG文件，可能导致主机重定向。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| chatwoot | chatwoot/chatwoot | unspecified ~ 2.5.0 | - |
|
II. Public POCs for CVE-2021-3742
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · chatwoot · 2024-11-15 · 3 CVEs total
| CVE-2021-3740 | Session Fixation in chatwoot/chatwoot | |
| CVE-2021-3741 | Stored Cross-site Scripting (XSS) in chatwoot/chatwoot |
IV. Related Vulnerabilities
Same product: chatwoot/chatwoot
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CVE-2024-0640
Stored XSS in chatwoot/chatwoot -
CVE-2021-3740
Session Fixation in chatwoot/chatwoot -
CVE-2021-3741
Stored Cross-site Scripting (XSS) in chatwoot/chatwoot -
CVE-2023-2109
Cross-site Scripting (XSS) - DOM in chatwoot/chatwoot -
CVE-2022-3741
Improper Restriction of Excessive Authentication Attempts in
Same vendor: chatwoot
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CVE-2026-72719
Chatwoot: Cross-Account Resource Transfer via `account_id` P -
CVE-2026-63765
Chatwoot < 4.16.0 Unauthenticated ActiveStorage Direct Uploa -
CVE-2026-44707
Chatwoot: Pre-Account Takeover via OAuth on Unconfirmed Acco -
CVE-2026-44706
Chatwoot: SQL Injection in Conversation/Contact Filter API v -
CVE-2024-0640
Stored XSS in chatwoot/chatwoot
Same weakness: CWE-918
-
CVE-2026-105122
OpenAM before 16.1.3 SSRF via OpenID Connect Client jwks_uri -
CVE-2026-82044
UTMStack < 11.2.16 Server-Side Request Forgery via downloadP -
CVE-2026-82040
UTMStack < 11.2.16 SSRF via IdentityProviderService -
CVE-2026-103958
Server-side request forgery in the tool server and remote ag -
CVE-2026-103957
Server-side request forgery in the OAuth2 discovery handling
V. Comments for CVE-2021-3742
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