Is CVE-2021-3742 actively exploited?

No active exploitation of CVE-2021-3742 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-3742 be exploited remotely?

Yes. CVE-2021-3742 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-3742?

CVE-2021-3742 has a CVSS score of 8.8 (HIGH).

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HIGH

CVE-2021-3742

CWE-918Published: November 15, 2024· Updated: Jun 17, 2026

8.8

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2021-3742 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.