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CriticalA PHP security release fixes two CVSS 9.2 flaws, and PHP 8.1 and older get no patchWhat it means for your site
CVE-2023-39971CriticalCVE published 17 August 2023Added to mySites.guru 9 July 2026

AcyMailing (com_acym) below 10.11.1 - Unauthenticated SQL Injection

CVE-2026-56292. AcyMailing for Joomla is affected by an unauthenticated SQL injection in a public front-end endpoint. Request parameters were placed into the column list of a SELECT query without sanitising or quoting them (Joomla's text filter strips HTML but does not neutralise SQL syntax), letting an anonymous visitor read data from any table in the site database, including Joomla user accounts and password hashes. No login, account or CSRF token is required. Discovered and responsibly reported to Acyba by mySites.guru (Phil Taylor); fixed in AcyMailing 10.11.1 (released 9 July 2026). A web application firewall that filters SQL (Cloudflare managed rules, Admin Tools, RSFirewall) blocks the payload as mitigation, but the only reliable fix is to update. Update every affected site to 10.11.1 or later. Also covered by this rule: CVE-2023-39970 (unrestricted file upload, RCE), CVE-2023-39971 (XSS), CVE-2023-39972 (unauthorised mailing list creation), CVE-2023-39973 (unauthorised removal of campaign attachments) and CVE-2023-39974 (subscriber count disclosure), all affecting AcyMailing 6.7.0 to 8.6.3. Also within this rule: CVE-2023-28731, CVE-2023-28732 and CVE-2023-28733 (AnyMailing/AcyMailing Joomla plugin below 8.3.0 - unauthenticated RCE via unrestricted upload, missing access control and path traversal on the front-office campaign builder). All three sit inside the 6.0.0 to below-10.11.1 range and need no separate row.

Is my site affected?

Affected
AcyMailing from 6.0.0 up to but not including 10.11.1
Fixed in
10.11.1
What to do
Update AcyMailing to 10.11.1 for this flaw, or to 11.1.0 or later, which no rule we check matches.
Check whether your sites are affected

How severe CVE-2023-39971 is

The published CVE record has no CVSS score, so there is no vector to break down here. mySites.guru rates it Critical, and that is the rating your sites are checked against.

Timeline

  1. 17 August 2023CVE-2023-39971 record published by its CNA
  2. 9 July 2026mySites.guru check added for AcyMailing (from 6.0.0 up to but not including 10.11.1)
  3. 9 July 2026We published: Unauthenticated SQL Injection in AcyMailing found by mySites.guru

Rule details

Our disclosure post

Unauthenticated SQL Injection in AcyMailing found by mySites.guru

Unauthenticated SQL Injection in AcyMailing found by mySites.guru

mySites.guru found and reported CVE-2026-56292, an unauthenticated SQL injection in AcyMailing for Joomla and WordPress. Update to 10.11.1 now.

Other vulnerabilities in AcyMailing

Updating for CVE-2023-39971 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

AcyMailing

Latest safe version: 11.1.0

References

CVE-2023-39971 questions

Which versions are affected by CVE-2023-39971?
CVE-2023-39971 affects AcyMailing from 6.0.0 up to but not including 10.11.1. The fix is in 10.11.1.
How do I fix CVE-2023-39971?
Update AcyMailing to 10.11.1 for this flaw, or to 11.1.0 or later, which no rule we check matches. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2023-39971?
The published CVE record has no CVSS score. mySites.guru rates it Critical.

Running an affected version on a site you manage?

A free audit tells you which of your Joomla and WordPress sites run an affected version, which are out of date, and which have not been backed up. No card required. If a site is already compromised, fix.mysites.guru is a single fixed fee per incident, usually resolved the same day.

This check is part of the mySites.guru Joomla vulnerability scanner, which reads every installed extension's version on each audit. Browse the rest of the Joomla vulnerability database.

Rules current as of 24 October 2026.