SilverStripe silverstripe-framework up to 6.2.1 cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.7$0-$5k1.32

Summaryinfo

A vulnerability classified as problematic has been found in SilverStripe silverstripe-framework up to 6.2.1. This impacts an unknown function. This manipulation causes cross site scripting. This vulnerability appears as CVE-2026-54720. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in SilverStripe silverstripe-framework up to 6.2.1. It has been declared as problematic. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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/

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-54720 since 06/16/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 6.2.2 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Vendor

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.4
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: silverstripe-framework 6.2.2

Timelineinfo

06/16/2026 CVE reserved
07/01/2026 +15 days VulDB entry created
07/02/2026 +0 days Advisory disclosed
07/02/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-gvrw-qqp5-jgc5
Status: Confirmed

CVE: CVE-2026-54720 (🔒)
GCVE (CVE): GCVE-0-2026-54720
GCVE (VulDB): GCVE-100-375703

Entryinfo

Created: 07/02/2026 00:49
Changes: 07/02/2026 00:49 (65)
Complete: 🔍
Cache ID: 216::103

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