CVE-2023-28851: Silverstripe Form Capture provides a method to capture simple silverstripe forms and an admin interface for us

Routine

MEDIUM 6.1UPGRADE

CVE-2023-28851 is a medium-severity flaw (CVSS 6.1) affecting silverstripe form capture. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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-i

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-79, CWE-80
Published	2023-04-03
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: bigfork

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-04-03 18:15 UTCPublished CVE record published
2026-06-17 05:48 UTCUpdated Record last modified

bigfork silverstripe form capture UPGRADE

Affected: >= 0.2.0 and <= 0.2.3 · >= 2.0.0 and < 2.2.5 · 1.0 · 1.0.1 · 3.0.0 · 3.1.0

Fixed in: 2.2.5

Safe to downgrade to: a release before 0.2.0

1. Check installed version

apt-cache policy silverstripe-form-capture || rpm -q silverstripe-form-capture || silverstripe-form-capture --version

2. UPGRADE to 2.2.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade silverstripe-form-capture

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade silverstripe-form-capture

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.2.0 (Debian / Ubuntu)

apt-cache madison silverstripe-form-capture sudo apt install silverstripe-form-capture=<VERSION_BEFORE_0.2.0> sudo apt-mark hold silverstripe-form-capture

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list silverstripe-form-capture sudo dnf downgrade silverstripe-form-capture-<VERSION_BEFORE_0.2.0> sudo dnf versionlock add silverstripe-form-capture

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-28851?

silverstripe form capture: upgrade to 2.2.5. Exact commands for each OS are on this page.

Is CVE-2023-28851 being exploited?

CVE-2023-28851 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-28851 affect?

CVE-2023-28851 affects silverstripe form capture. Severity is medium (CVSS 6.1). 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

How urgent is CVE-2023-28851?

Priority 30/100. No elevated risk signals yet.

References

← Back to latest CVEs