CVE-2023-39974Network attack vector

Subscriber-count disclosure through front-end campaign management

Published Aug 17, 2023 · Updated Oct 20, 2024

Information disclosure in AcyMailing Enterprise for Joomla 6.7.0 through 8.6.3 allows remote attackers to obtain a list's subscriber count. AcyMailing has not published the affected request handler or the validation failure that exposes the count. Exposure requires the site owner to have created a front-end campaigns management menu, and the disclosed data is limited to subscriber totals.

CVSS severity5.3
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Information disclosure in AcyMailing Enterprise for Joomla 6.7.0 through 8.6.3 allows remote attackers to obtain a list's subscriber count. AcyMailing has not published the affected request handler or the validation failure that exposes the count. Exposure requires the site owner to have created a front-end campaigns management menu, and the disclosed data is limited to subscriber totals.

The record

CVE
CVE-2023-39974
Published
Aug 17, 2023
Updated
Oct 20, 2024
Vendor
AcyMailing Newsletter Team
Product
AcyMailing
Classifications
CWE-668, CWE-200, CAPEC-253
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=6.7.0-8.6.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

AcyMailing Newsletter Team · AcyMailingversion=6.7.0-8.6.3

Published CVSS scores

5.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CAPEC-253Remote Code Inclusion

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo