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Vulnerability record · CVE-2020-16131 · published 3 August 2020

CVE-2020-16131: Tiki cross-site scripting vulnerability

Tiki · Tiki

Tiki before 21.2 allows XSS because [\s\/"\'] is not properly considered in lib/core/TikiFilter/PreventXss.php.

6.1 CVSS 3.1 Medium EPSS 0.69% · top 49.3% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

Tiki before 21.2 allows XSS because [\s\/"\'] is not properly considered in lib/core/TikiFilter/PreventXss.php.

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://gitlab.com/tikiwiki/tiki/-/commit/d12d6ea7b025d3b3f81c8a71063fe9f89e0c4bf1 Third Party Advisory
https://tiki.org/News Vendor Advisory
https://gitlab.com/tikiwiki/tiki/-/commit/d12d6ea7b025d3b3f81c8a71063fe9f89e0c4bf1 Third Party Advisory
https://tiki.org/News Vendor Advisory

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Related vulnerabilities

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

9.8CVE-2020-15906Tiki improper restriction of authentication attempts vulnerabilitytiki-login.php in Tiki before 21.2 sets the admin password to a blank value after 50 invalid login attempts.EPSS 27%8.8CVE-2023-22850Tiki deserialization of untrusted data vulnerabilityTiki before 24.1, when the Spreadsheets feature is enabled, allows lib/sheet/grid.php PHP Object Injection because of an unserialize call.EPSS 1.2%8.8CVE-2023-22853Tiki code injection vulnerabilityTiki before 24.1, when feature_create_webhelp is enabled, allows lib/structures/structlib.php PHP Object Injection because of an eval.EPSS 0.94%8.8CVE-2018-7304Tiki csv injection vulnerabilityTiki 17.1 does not validate user input for special characters; consequently, a CSV Injection attack can open a CMD.EXE or Calculator window on the vi…EPSS 1.2%7.2CVE-2023-22851Tiki unrestricted file upload vulnerabilityTiki before 24.2 allows lib/importer/tikiimporter_blog_wordpress.php PHP Object Injection by an admin because of an unserialize call.EPSS 1.0%7.2CVE-2011-4558Tiki injection vulnerabilityTiki 8.2 and earlier allows remote administrators to execute arbitrary PHP code via crafted input to the regexres and regex parameters.EPSS 4.3%6.5CVE-2023-22852Tiki cross-site request forgery vulnerabilityTiki through 25.0 allows CSRF attacks that are related to tiki-importer.php and tiki-import_sheet.php.EPSS 0.32%6.1CVE-2011-4455Tiki cross-site scripting vulnerabilityMultiple cross-site scripting vulnerabilities in Tiki 7.2 and earlier allow remote attackers to inject arbitrary web script or HTML via the path info…EPSS 0.95%

Source: NIST National Vulnerability Database (record CVE-2020-16131), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.