Quix Page Builder SQL Injection: Update to 6.2.1 Now

Quix Page Builder Pro versions 1.0 through 6.2.0 are affected by CVE-2026-58078, an unauthenticated SQL injection vulnerability. Joomla administrators should update to Quix 6.2.1 or later, assess potentially exposed data, and check their wider extension inventory for related SQL injection risks.

Joomla extension vulnerabilities demand prompt, evidence-led action when they permit anonymous access to site data. CVE-2026-58078 affects Quix Page Builder Pro through version 6.2.0; upgrading every affected installation to version 6.2.1 or later is the required remediation.

Quix Page Builder SQL Injection: What Is Affected

CVE-2026-58078 is an unauthenticated SQL injection vulnerability, classified as CWE-89, in Quix Page Builder Pro for Joomla. The affected range is versions 1.0 through 6.2.0. An anonymous visitor can reach the vulnerable functionality without first holding a Joomla account.

The vulnerability has a CVSS 4.0 score of 8.7 (High), assigned through the Joomla CNA record. The associated disclosure states that the issue can expose arbitrary database data, including user records and password hashes. That makes the incident priority clear: a public site running an affected version should be treated as potentially exposed until it has been patched and reviewed.

Unauthenticated SQL injection is serious because it can enable access to, or manipulation of, database contents without a valid login. In many Joomla deployments, database access can contribute to a wider compromise. It does not guarantee identical results on every site: the practical impact depends on the database schema, extension configuration, available data, database permissions, and attacker capabilities. Nevertheless, where an affected installation was internet-accessible, administrators should assume sensitive data may have been read.

The immediate fix is straightforward: update Quix Page Builder Pro to 6.2.1 or later. The published Quix vulnerability disclosure identifies 6.2.1 as the release containing the fix. Do not rely on disabling a page, hiding an administrator URL, or clearing a cache as a substitute for applying the update.

Prioritised Remediation for Joomla Site Owners

Agencies and administrators should handle this as a patch-and-review task rather than a routine update. Start with the sites that are publicly reachable, contain customer or member data, or share administrator credentials and operational secrets with other systems.

1. Identify every Quix installation. Check each managed Joomla site, including inactive, staging, legacy, and client-maintained instances. Record the installed Quix Page Builder Pro version and whether the site is publicly accessible.
2. Take a recoverable backup. Preserve a current database and filesystem backup before changing production software. A backup is an operational safeguard, not a remediation for the vulnerability.
3. Update Quix to 6.2.1 or later. Obtain the update through the normal trusted extension maintenance process. Confirm that the installed version is no longer within 1.0–6.2.0.
4. Clear applicable caches and test essential pages. Check key public pages, editing workflows, forms, and any Quix-dependent layouts after the update. This confirms that the deployed site is using the patched extension and that normal content delivery remains intact.
5. Document completion. Record the site, prior version, updated version, date, tester, backup location, and any follow-up findings. For agencies, this makes exception handling and client communication far more reliable.

If an update cannot be applied immediately because of a compatibility issue, reduce public exposure while arranging a tested upgrade. That is a temporary risk-reduction measure only. The durable fix for CVE-2026-58078 is Quix 6.2.1 or later.

Review Exposure After Updating

Patching stops the known vulnerable version from remaining available; it does not establish whether the site was queried before the patch. For any Quix instance that was exposed while vulnerable, preserve relevant web-server, application, and database logs according to your retention policy before they rotate.

Review the available evidence for unusual requests, unexpected database errors, anomalous administrator activity, new or altered privileged accounts, and changes to extension or template files. The goal is not to infer a breach from one log line, but to identify events that warrant a broader incident response. If the available logs are incomplete, that uncertainty should raise—not lower—the value of credential and secret rotation.

Credentials and secrets to consider

• Require Joomla administrator and privileged-user password changes, particularly where password hashes or account records may have been exposed.
• Regenerate application, integration, and service credentials that were stored in the database or accessible to privileged users.
• Review privileged Joomla users, access levels, and account changes for anything unexpected.
• Check database users and permissions. Apply least privilege where the hosting arrangement permits it.
• Use known-good backups only after assessing whether they pre-date suspicious activity; restoring an old copy without remediation can reintroduce the vulnerable extension.

These actions are proportionate precautions, not evidence that compromise occurred. There is currently no authoritative confirmation of in-the-wild exploitation for CVE-2026-58078 in the evidence reviewed for this article.

Related Joomla SQL Injection Vulnerabilities to Inventory

Quix should be the first update for affected sites, but it is also a useful trigger for a broader extension and core inventory. The following confirmed issues are all SQL injection vulnerabilities. Their scores are shown with their scoring-system versions because CVSS 2.0, CVSS 3.0/3.1, and CVSS 4.0 numbers are not directly interchangeable.

CVE-2026-56292 affects the Joomla edition of AcyMailing from 6.0.0 up to, but excluding, 10.11.1. Update to 10.11.1. Its official CVSS 4.0 score is 9.2 (Critical) from the Joomla CNA; NVD also provides a CVSS 3.1 score of 7.5 (High). Those are assessments under different CVSS versions, not contradictory values or figures that should be converted between systems.

CVE-2026-57831 affects DP Calendar versions 8.18.0 through 10.11.1. The documented fixed releases include 10.11.2 and 8.19.4. Update to an applicable fixed release following vendor guidance and ensure obsolete copies are not left installed.

Older Joomla core versions also deserve attention. The Joomla security advisory for CVE-2015-7857 identifies an unauthenticated SQL injection in com_contenthistory affecting Joomla 3.2.0–3.4.4 and fixed in 3.4.5. CVE-2017-8917 affected Joomla 3.7.0 in com_fields and was fixed in 3.7.1. A currently supported Joomla release is preferable to treating these historical minimum versions as a long-term target.

Severity Scores, NVD Status and Known Exploitation

CVSS estimates technical severity; it does not establish that a vulnerability has been exploited. Conversely, an exploitation listing is evidence about observed use, not a replacement for a technical severity assessment. Administrators should use both kinds of information alongside business context, data sensitivity, exposure, and patch availability.

None of the five CVEs discussed here—CVE-2015-7857, CVE-2017-8917, CVE-2026-56292, CVE-2026-57831, and CVE-2026-58078—is currently listed in the CISA Known Exploited Vulnerabilities catalog according to the available evidence. This does not mean vulnerable installations are safe to defer. It means the reviewed evidence does not support a claim of confirmed exploitation or ransomware use for these vulnerabilities.

NVD analysis for CVE-2026-57831 and CVE-2026-58078 is marked Deferred. The current vulnerability details and CVSS 4.0 scores for those records come from the Joomla CNA. Use the relevant CNA record and vendor guidance for remediation decisions rather than waiting for a different analysis status. The CVE record for Quix and the vendor’s Quix Page Builder information are suitable references when verifying the extension in use.

Build a Repeatable Extension Security Process

This issue illustrates why an agency needs an inventory that is both complete and current. A spreadsheet, configuration-management record, or managed asset register should identify each site, Joomla version, installed extensions, extension versions, owner, public exposure, update status, and backup location. Include staging and dormant sites: they are often missed but may still be reachable or hold valuable data.

• Set a defined cadence for core and extension update reviews, with expedited handling for authenticated bypasses, SQL injection, and remote code execution issues.
• Remove extensions that are no longer needed rather than merely disabling them. An installed but unused vulnerable extension can remain a liability.
• Limit access to administration interfaces and enforce strong, unique authentication for privileged accounts.
• Maintain tested backups and rehearse recovery so security updates do not become unnecessarily delayed by fear of rollback problems.
• Keep sufficient logs to support a meaningful exposure review, and protect those logs from unauthorised alteration.
• Verify extension updates across every site in a portfolio instead of assuming that a single successful update covers cloned or separately managed installations.

The practical priority remains simple: locate Quix Page Builder Pro versions through 6.2.0, update them to 6.2.1 or later, and review exposed sites as though database data could have been read. Then use the same inventory to address AcyMailing, DP Calendar, and unsupported Joomla core versions before the next advisory turns an overlooked component into an incident.

Sources

• CVE record for CVE-2026-58078
• Quix Page Builder Pro SQL injection disclosure
• CVE record for AcyMailing CVE-2026-56292
• CVE record for DP Calendar CVE-2026-57831
• Joomla security advisory for CVE-2015-7857
• Joomla security advisory for CVE-2017-8917