External risk intelligence

SQL Injection in AcyMailing Component for Joomla Leads to Database Access

CVE advisorySeverity: CRITICAL (CVSS 9.2)

CVE-2026-56292

AcyMailing is a newsletter and marketing component designed for Joomla websites. Because it is a web-based plugin intended to handle user subscriptions and public-facing mailing list interactions, it is commonly deployed on internet-accessible web servers.

SQL Injection

Acymailing

6.0.0 to before 10.11.1

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in the AcyMailing component for Joomla, which could allow unauthorized access to your company's databases. While the specific impact depends on how this component is used within the organization, such vulnerabilities can potentially lead to the exposure of sensitive information. Our main concern is to confirm if this component is in use and assess any associated exposure.

SQL injection allows database access.
Potential for unauthorized data access.
Confirm usage and assess exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit a SQL injection vulnerability within the AcyMailing component on Joomla websites. This would likely begin with an unauthenticated attacker sending specially crafted input to the affected component. If successful, the attacker could gain unauthorized access to the website's database.

Unauthenticated remote access is required.
Triggered by sending malicious input to the component.
Leads to unauthorized database access.

Live Threat

Current exploitation, exposure, and threat context

A SQL injection vulnerability in the AcyMailing component could allow an unauthenticated attacker to access and potentially leak sensitive information from the website's database. This could occur when the component is deployed on a web server that is accessible from the internet.

Database information and content at risk.
Exploited via network when component is exposed.
Unauthorized database access and data leakage.

Operational Fix

Recommended remediation, mitigation, and detection steps

The discovery of a SQL injection vulnerability in AcyMailing for Joomla necessitates immediate attention from the platform and security teams. The first practical step involves identifying all instances of AcyMailing across the organization, assessing their internet reachability and business criticality, and pinpointing the accountable owners for each deployment. This information will inform a prioritized remediation plan.

Own by: Platform and Security Teams.
Verify first: Asset inventory and exposure.
Action: Plan and coordinate remediation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is AcyMailing for Joomla?

AcyMailing is a specialized extension for the Joomla content management system. It serves as a newsletter and marketing tool that website owners use to manage subscriptions, create email campaigns, and handle public-facing mailing list interactions directly within their site's backend.

What does CVE-2026-56292 mean?

This CVE represents a SQL injection (SQLi) vulnerability, classified under CWE-89. In simple terms, the software fails to properly sanitize user-supplied data before using it in database queries. This allows an attacker to inject their own malicious commands, potentially tricking the database into revealing private information or performing unauthorized actions.

How is this SQL injection triggered?

An attacker triggers this vulnerability by sending specifically crafted, malicious input to the AcyMailing component. Because the flaw exists within the component's handling of requests, simple browsing of the website does not trigger it; it requires an intentional effort to submit data designed to bypass the application's intended logic.

Is my instance relevant to this threat?

Halo Surface Signal indicates that because AcyMailing is a plugin designed for subscriptions, it is typically deployed on internet-facing web servers. If your Joomla installation is accessible from the internet, it is at higher risk. Internal-only sites that are not reachable from outside networks are less exposed to this specific attack vector.

What should I do first to respond?

Begin by conducting an inventory to locate all instances of AcyMailing within your environment. Once you have identified where it is running, determine if those sites are accessible to the public. Coordinate with your platform and security teams to prioritize these assets for updates as part of your standard maintenance workflow.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.