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Vulnerability record · CVE-2023-4655 · published 31 August 2023

CVE-2023-4655: Instantcms cross-site scripting vulnerability

Instantcms · Instantcms

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

6.1 CVSS 3.1 Medium EPSS 0.47% · top 62.0% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score
0.47%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/instantsoft/icms2/commit/a6a30e7bc96cd2081707388046c0259870533da6 Patch
https://huntr.dev/bounties/e2189ad5-b665-4ba5-b6c4-112e58ae9a97 ExploitPatchThird Party Advisory
https://github.com/instantsoft/icms2/commit/a6a30e7bc96cd2081707388046c0259870533da6 Patch
https://huntr.dev/bounties/e2189ad5-b665-4ba5-b6c4-112e58ae9a97 ExploitPatchThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.3CVE-2013-10051Instantcms vulnerabilityA remote PHP code execution vulnerability exists in InstantCMS version 1.6 and earlier due to unsafe use of eval() within the search view handler. Sp…EPSS 2.8%9.1CVE-2023-4188Instantcms sql injection vulnerabilitySQL Injection in GitHub repository instantsoft/icms2 prior to 2.16.1-git.EPSS 0.93%7.2CVE-2025-59055Instantcms server-side request forgery (ssrf) vulnerabilityInstantCMS is a free and open source content management system. A blind Server-Side Request Forgery (SSRF) vulnerability in InstantCMS up to and incl…EPSS 0.45%7.2CVE-2024-31212Instantcms improper input validation vulnerabilityInstantCMS is a free and open source content management system. A SQL injection vulnerability affects instantcms v2.16.2 in which an attacker with ad…EPSS 0.85%7.1CVE-2026-28281Instantcms cross-site request forgery vulnerabilityInstantCMS is a free and open source content management system. Prior to 2.18.1, InstantCMS does not validate CSRF tokens, which allows attackers gra…EPSS 0.17%6.1CVE-2018-14382Instantcms cross-site scripting vulnerabilityInstantCMS 2.10.1 has /redirect?url= XSS.EPSS 0.87%5.4CVE-2024-50348Instantcms cross-site scripting vulnerabilityInstantCMS is a free and open source content management system. In photo upload function in the photo album page there is no input validation taking …EPSS 0.33%5.4CVE-2024-31213Instantcms open redirect vulnerabilityInstantCMS is a free and open source content management system. An open redirect was found in the ICMS2 application version 2.16.2 when being redirec…EPSS 0.40%

Source: NIST National Vulnerability Database (record CVE-2023-4655), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.