What’s Vulnerable › Vulnerabilities

CVE-2023-4189: Cross-site Scripting (XSS) - Reflected in instantsoft/icms2

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-08-05 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross-site Scripting (XSS) - Reflected in GitHub repository instantsoft/icms2 prior to 2.16.1-git.

Affected products

• InstantCMS: before 2.16.1 — fixed in 2.16.1

How to fix

Upgrade to a fixed version: InstantCMS 2.16.1. Check the vendor advisory for mitigations.

References

• https://github.com/instantsoft/icms2/commit/1dbc3e6c8fbf5d2dc551cb27fad0de3584dee40f
• https://huntr.dev/bounties/b00e6986-64e7-464e-ba44-e42476bfcdc4
• https://github.com/instantsoft/icms2/commit/1dbc3e6c8fbf5d2dc551cb27fad0de3584dee40f
• https://huntr.dev/bounties/b00e6986-64e7-464e-ba44-e42476bfcdc4

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