CVE-2023-4393Network attack vector

Phishing via unsanitized registration names

Published Oct 29, 2023 · Updated Sep 25, 2024

HTML and SMTP injection in LiquidFiles 3.7.13 and earlier allows remote attackers to conduct phishing through the registration page. The registration workflow inadequately sanitizes supplied user names before embedding them in web and mail output. Registration must be reachable and a recipient must interact with the crafted output; published sources do not disclose the exact payload or rendering path.

CVSS severity5.4
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

HTML and SMTP injection in LiquidFiles 3.7.13 and earlier allows remote attackers to conduct phishing through the registration page. The registration workflow inadequately sanitizes supplied user names before embedding them in web and mail output. Registration must be reachable and a recipient must interact with the crafted output; published sources do not disclose the exact payload or rendering path.

The record

CVE
CVE-2023-4393
Published
Oct 29, 2023
Updated
Sep 25, 2024
Vendor
LiquidFiles
Product
LiquidFiles
Classifications
CWE-116, CWE-147, T1566
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.7.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

LiquidFiles · LiquidFilesversion=0 <=3.7.13

Published CVSS scores

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.4The Missing Link AustraliaCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
CWE-147Improper Neutralization of Input Terminators
T1566Phishing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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