CVE-2019-20361Public exploitNetwork attack vector

Unauthenticated blind SQL injection via hash parameter

Published Jan 8, 2020 · Updated Aug 5, 2024

Blind SQL injection in Email Subscribers & Newsletters before 4.3.1 allows remote attackers to query its database through the hash parameter. The ES_Actions::add function concatenates hash-derived values from $args directly into an INSERT statement instead of preparing or escaping them. The tracking action accepts unauthenticated requests even when no campaign exists, enabling time-based database inference and exposure of stored data.

CVSS severity8.3
High
EPSS probability85.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Blind SQL injection in Email Subscribers & Newsletters before 4.3.1 allows remote attackers to query its database through the hash parameter. The ES_Actions::add function concatenates hash-derived values from $args directly into an INSERT statement instead of preparing or escaping them. The tracking action accepts unauthenticated requests even when no campaign exists, enabling time-based database inference and exposure of stored data.

The record

CVE
CVE-2019-20361
Published
Jan 8, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
8.3MITRECVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

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 exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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