TI-2024-33783 Aliases CVE-2024-50348

InstantCMS has a Cross Site Scripting Vulnerability

MEDIUM 58CWE-79Published 2024-10-29 · Updated 2024-10-30

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

InstantCMS is a free and open source content management system. In photo upload function in the photo album page there is no input validation taking place. Due to this attackers are able to inject the XSS (Cross Site Scripting) payload and execute. This vulnerability is fixed in 2.16.3.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00349 28th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed icms2 (instantsoft): 2.16.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
instantsoft	icms2	before 2.16.3	2.16.3	Patch available	CNA

icms2 Vendorinstantsoft Affected before 2.16.3 Fixed in 2.16.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:instantcms:instantcms::::::::	before 2.16.3	Vulnerable	InstantCMS

cpe:2.3:a:instantcms:instantcms:*:*:*:*:*:*:*:* Versions before 2.16.3 Vulnerable ·InstantCMS

Remediation

Fix · CNA icms2 (instantsoft) Fixed in 2.16.3

Timeline

2026-10-02 Threatist record created from CVE-2024-50348

References

Exploit 1

https://github.com/instantsoft/icms2/security/advisories/GHSA-f6cf-jg84-fw29

Patch 1

https://github.com/instantsoft/icms2/commit/e02de2fa1850bb40c9b2050b9256c838a0ea7aa3

TI-2023-03877 SQL Injection in instantsoft/icms2 CVSS 3.1CRITICAL 9.1
TI-2024-20589 SQL injection in index_chart_data action CVSS 3.1HIGH 7.2
TI-2023-04538 SQL Injection in instantsoft/icms2 CVSS 3.1HIGH 7.2
TI-2025-36697 InstantCMS vulnerable to Server-Side Request Forgery via package installer CVSS 3.1HIGH 7.2
TI-2023-04291 Cross-site Scripting (XSS) - Reflected in instantsoft/icms2 CVSS 3.1MEDIUM 6.1
TI-2026-39443 InstantCMS has Remote Code Execution in package installer CVSS 3.1MEDIUM 5.5

See all 25 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences