Detections
Analytics

SCA: security update for formstone (GHSA-wc29-h54q-q8qx)

medium Tenable Cloud Security Plugin ID 434361

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Formstone <=1.4.16 is vulnerable to a Reflected Cross-Site Scripting (XSS) vulnerability caused by
 improper validation of user supplied input in the upload-target.php and upload-chunked.php files. A remote
 attacker could exploit this vulnerability using a specially crafted URL to execute a script in a victim's
 Web browser within the security context of the hosting Web site once the URL is clicked or visited. An
 attacker could use this vulnerability to steal the victim's cookie-based authentication credentials, force
 malware execution, user redirection and others. (CVE-2020-26768)

See Also

https://github.com/advisories/GHSA-wc29-h54q-q8qx

Plugin Details

Severity: Medium

ID: 434361

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 8/19/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 2.3

Percentile: 8.67

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2020-26768

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/24/2022

Vulnerability Publication Date: 1/7/2021

Reference Information

CVE: CVE-2020-26768

cwe: CWE-79