Vulnerability · Published Jul 1, 2026 · Assigned by GitHub_M
CVE-2026-54720Silverstripe Framework: Possible XSS attack through media embed
Medium 5.4
In plain English
A medium-severity cross-site scripting in silverstripe-framework from silverstripe. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 81.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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/
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | silverstripe/framework | 6.2.2 | GHSA-gvrw-qqp5-jgc5 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| silverstripe | silverstripe-framework | < 6.2.2 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N