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CVE-2020-23234

CVE-2020-23234: Cross Site Scripting in LavaLite CMS

4.8

CVSS Score
3.1

Basic Information

CVE ID
CVE-2020-23234
GHSA ID
GHSA-v2f3-f8x4-m3w8
EPSS Score
0.37773%
CWE
CWE-79
Published
8/9/2021
Updated
7/6/2023
KEV Status
No
Technology
TechnologyPHP

Technical Details

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Package NameEcosystemVulnerable VersionsFirst Patched Version
lavalite/cmscomposer<= 5.8.0

Vulnerability Intelligence
Miggo AIMiggo AI

Miggo AIRoot Cause Analysis

The vulnerability manifests in the Menu Blocks feature's input handling and rendering flow. The XSS occurs when: 1) User input containing 'ontoggle' handlers is accepted without proper sanitization in backend controllers (high confidence based on vulnerability pattern), and 2) The stored payload is rendered without output encoding in frontend templates (high confidence given the XSS trigger mechanism). The combination of insufficient input validation and unsafe output makes these components vulnerable.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

*ross Sit* S*riptin* (XSS) vuln*r**iity *xists in L*v*Lit* *MS *.*.* vi* t** M*nu *lo*ks ***tur*, w*i** **n ** *yp*ss** *y usin* *TML *v*nt **n*l*rs, su** *s "onto**l*,".

Reasoning

T** vuln*r**ility m*ni**sts in t** M*nu *lo*ks ***tur*'s input **n*lin* *n* r*n**rin* *low. T** XSS o**urs w**n: *) Us*r input *ont*inin* 'onto**l*' **n*l*rs is ****pt** wit*out prop*r s*nitiz*tion in ***k*n* *ontroll*rs (*i** *on*i**n** **s** on vul