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CVE-2026-48909CriticalCVSS 9.5CVE published 20 June 2026Added to mySites.guru 1 January 2026

SP LMS (com_splms) <= 4.1.3 - CVE-2026-48909 (CVSS 9.5) Unauthenticated PHP Object Injection (RCE)

SP LMS by JoomShaper versions up to and including 4.1.3 pass the base64-decoded lmsOrders cookie straight to unserialize() in the cart model with no validation (CVE-2026-48909, CVSS 9.5). An unauthenticated attacker can inject a malicious PHP object and reach remote code execution via Joomla native gadget chains. Update SP LMS to 4.1.4 or later.

Is my site affected?

Affected
SP LMS before 4.1.4
Fixed in
4.1.4
What to do
Update SP LMS to 4.1.4 or later.
Check whether your sites are affected

How CVE-2026-48909 is scored

The base metrics as Joomla CNA 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.

9.5 Critical

CVSS 4.0, scored by Joomla CNA
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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
AT:P Attack requirements
Present. Needs a particular deployment or race to line up
PR:N Privileges required
None. No account needed
UI:N User interaction
None. Nobody has to be tricked into anything

What it does to the site

VC:H Confidentiality
High. Everything the site holds can be read
VI:H Integrity
High. Data and files can be altered at will
VA:H Availability
High. The site can be taken down

What it does beyond the site

SC:H Confidentiality
High. Data on other systems can be read
SI:H Integrity
High. Other systems can be altered
SA:H Availability
High. Other systems can be taken down

Timeline

  1. 1 January 2026mySites.guru check added for SP LMS (before 4.1.4)
  2. 20 June 2026CVE-2026-48909 record published by its CNA

Rule details

Other vulnerabilities in SP LMS

Updating for CVE-2026-48909 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

SP LMS

Latest safe version: 4.1.4

References

CVE-2026-48909 questions

Which versions are affected by CVE-2026-48909?
CVE-2026-48909 affects SP LMS before 4.1.4. The fix is in 4.1.4.
How do I fix CVE-2026-48909?
Update SP LMS to 4.1.4 or later. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2026-48909?
Joomla CNA scores it 9.5 (Critical) under CVSS 4.0. In plain terms: reachable across the internet, no account needed and nobody has to be tricked into anything.

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 5 October 2026.