CVE-2026-54720 | Silverstripe Framework is a PHP framework which powers the S… | CVSS 5.4 MEDIUM

Description

Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In versions prior to 6.2.2, the "Insert media from web" functionality in the CMS is vulnerable to XSS from a specially crafted embed. This issue was fixed in version 6.2.2/

Metadata

CVE ID: CVE-2026-54720
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-15 23:07 UTC
Published: 2026-07-01 21:02 UTC
Last updated: 2026-07-02 15:54 UTC
Primary CWE: CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product: silverstripe / silverstripe-framework
Sources: cve.org · NVD

Severity & Metrics

5.4 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
silverstripe	silverstripe-framework	—	< 6.2.2

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
5.4	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

References (2)

https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-gvrw-qqp5-jgc5 https://github.com/silverstripe/silverstripe-framework/security/advisories/GHSA-gvrw-qqp5-jgc5
https://www.silverstripe.org/download/security-releases/cve-2026-54720 https://www.silverstripe.org/download/security-releases/cve-2026-54720