joomshaper.net SP LMS Extension 1.0.0-4.1.3 deserialization

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k6.21-

Summaryinfo

A vulnerability classified as critical was found in joomshaper.net SP LMS Extension 1.0.0-4.1.3. This vulnerability affects unknown code. The manipulation results in deserialization. This vulnerability is known as CVE-2026-48909. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in joomshaper.net SP LMS Extension 1.0.0-4.1.3. Affected is an unknown function. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was published by Amin Isayev. The advisory is shared for download at joomshaper.com. This vulnerability is traded as CVE-2026-48909 since 05/26/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.1.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-38108). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SP LMS Extension 4.1.4

Timelineinfo

05/26/2026 CVE reserved
06/20/2026 +25 days Advisory disclosed
06/20/2026 +0 days VulDB entry created
06/20/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: joomshaper.com
Researcher: Amin Isayev
Status: Confirmed

CVE: CVE-2026-48909 (🔒)
GCVE (CVE): GCVE-0-2026-48909
GCVE (VulDB): GCVE-100-372540
EUVD: 🔒

Entryinfo

Created: 06/20/2026 18:52
Updated: 06/20/2026 19:47
Changes: 06/20/2026 18:52 (66), 06/20/2026 19:47 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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