What’s Vulnerable › Vulnerabilities

CVE-2023-4655: Cross-site Scripting (XSS) - Reflected in instantsoft/icms2

• Severity: medium (CVSS 6.1 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: 2023-08-31 · updated 2026-06-17
• Weakness: CWE-79

Description

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

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/a6a30e7bc96cd2081707388046c0259870533da6
• https://huntr.dev/bounties/e2189ad5-b665-4ba5-b6c4-112e58ae9a97
• https://github.com/instantsoft/icms2/commit/a6a30e7bc96cd2081707388046c0259870533da6
• https://huntr.dev/bounties/e2189ad5-b665-4ba5-b6c4-112e58ae9a97

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