CVE-2023-28851: Silverstripe Form Capture vulnerable to Stored Cross-Site Scripting

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-04-03 · updated 2026-06-17
Weakness: CWE-79

Description

Silverstripe Form Capture provides a method to capture simple silverstripe forms and an admin interface for users. Starting in version 0.2.0 and prior to versions 1.0.2, 1.1.0, 2.2.5, and 3.1.1, improper escaping when presenting stored form submissions allowed for an attacker to perform a Cross-Site Scripting attack. The vulnerability was initially patched in version 1.0.2, and version 1.1.0 includes this patch. The bug was then accidentally re-introduced during a merge error, and has been re-patched in versions 2.2.5 and 3.1.1. There are no known workarounds for this vulnerability.

Affected products

bigfork silverstripe-form-capture: from 0.2.0 through 0.2.3; from 2.0.0 before 2.2.5; 1.0, 1.0.1, 3.0.0, 3.1.0 — fixed in 2.2.5

How to fix

Upgrade to a fixed version: bigfork silverstripe-form-capture 2.2.5. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2023-28851 or the next vulnerability affects your stack