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CVE-2026-63685HighCVSS 8.8CVE published 22 July 2026Added to mySites.guru 22 July 2026

Regular Labs DB Replacer (com_dbreplacer) <= 8.2.7 - Broken Access Control (unauthorised database replacements)

Regular Labs DB Replacer up to and including 8.2.7. Administrator routes and replacement requests did not consistently require Super User permission and a valid token, so an unauthorised backend user or a CSRF attack could run database replacements across the site - potentially causing major data corruption or full site compromise. Also affected by CVE-2026-63265, missing CSRF tokens and permission checks on the shared Regular Labs AJAX endpoints. Fixed in the Regular Labs security release of 22 July 2026 (9.0.0).

Is my site affected?

Affected
Regular Labs DB Replacer up to and including 8.2.7
Fixed in
A release after 8.2.7
What to do
Update Regular Labs DB Replacer to the newest release from the vendor. This flaw covers versions up to 8.2.7, so any later release is outside it.
Check whether your sites are affected

How CVE-2026-63685 is scored

The base metrics as CISA-ADP published them, and what each one means for a site running an affected version. Threat and environmental metrics are left out: they describe a moment or a particular install rather than the flaw.

8.8 High

CVSS 3.1, scored by CISA-ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

How it is reached

AV:N Attack vector
Network. Reachable across the internet
AC:L Attack complexity
Low. Nothing to work around, it just works
PR:N Privileges required
None. No account needed
UI:R User interaction
Required. Someone has to click or visit something
S:U Scope
Unchanged. Contained to the extension it is in

What it does

C:H Confidentiality
High. Everything the site holds can be read
I:H Integrity
High. Data and files can be altered at will
A:H Availability
High. The site can be taken down

Timeline

  1. 22 July 2026CVE-2026-63685 record published by its CNA
  2. 22 July 2026mySites.guru check added for Regular Labs DB Replacer (up to and including 8.2.7)
  3. 22 July 2026We published: Regular Labs Patched Its Whole Joomla Extension Catalogue at Once

Rule details

Our disclosure post

Regular Labs Patched Its Whole Joomla Extension Catalogue at Once

Regular Labs Patched Its Whole Joomla Extension Catalogue at Once

Regular Labs shipped a security-hardening update across its Joomla extension range on 22 July 2026: SSRF, command injection, stored XSS and more. No CVEs.

Other vulnerabilities in Regular Labs DB Replacer

Updating for CVE-2026-63685 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

Regular Labs DB Replacer

References

CVE-2026-63685 questions

Which versions are affected by CVE-2026-63685?
CVE-2026-63685 affects Regular Labs DB Replacer up to and including 8.2.7.
How do I fix CVE-2026-63685?
Update Regular Labs DB Replacer to the newest release from the vendor. This flaw covers versions up to 8.2.7, so any later release is outside it.
How severe is CVE-2026-63685?
CISA-ADP scores it 8.8 (High) under CVSS 3.1. In plain terms: reachable across the internet, no account needed and someone has to click or visit something.

Running an affected version on a site you manage?

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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 5 October 2026.