Joomla Extension - joomshaper.com - PHP Object injection in SP LMS extension for Joomla < 4.1.4

published 2026-06-20 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-38108

cvss: 9.5; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 4.9%; EPSS 4.9% chance of exploitation in 30 days, percentile 92%
public exploits: 1; Exploit-DB, plus a Nuclei check

SP LMS (com_splms) < 4.1.4 by JoomShaper deserializes user-controlled cookie data without validation, enabling an unauthenticated remote attacker to execute arbitrary code on the server.

Timeline

2026-06-20 Published
2026-07-06 First public exploit (EDB-52617)

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 4 mo ago (2026-06-22)

Exploit prediction

4.94% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-52617 Joomla Extension 4.1.4 - PHP Object injection webapps, 2026-07-06
Nuclei template Joomla SP LMS <= 4.1.3 - Remote Code Execution nuclei detection template

CVSS scores

assigned by	version	score	vector
CNA	4.0	9.5	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
CNA	4.0	9.5	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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

joomshaper.net SP LMS extension for Joomla

Classification

Weakness

CWE-502 Deserialization of Untrusted Data

References

joomshaper.com /
product

Sources

CVE List CVE-2026-48909
NVD CVE-2026-48909

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary