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CVE-2021-3742

26
FAUCET Score

CVE-2021-3742 is a Server-Side Request Forgery (SSRF) vulnerability affecting chatwoot/chatwoot versions prior to 2.5.0. An attacker can exploit this by uploading a malicious SVG file as an avatar, which, when opened in a new tab, triggers the SSRF. This vulnerability carries a high CVSS score of 8.8, indicating a significant risk of host redirection and potential high impact on confidentiality, integrity, and availability, requiring user interaction for successful exploitation. There is currently no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.5.0CPE matchmatch criteria
cpe:2.3:a:chatwoot:chatwoot:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.9HIGH

CVSS:3.0/AV:A/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 34th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / chatwoot/chatwoot/commit/6fdd4a29969be8423f31890b807d27d13627c50c
Product
huntr.com / bounties/1625472546121-chatwoot/chatwoot
Broken Link