Vulnerability · Published Aug 6, 2026 · Assigned by GitHub_M

CVE-2026-54717Silverstripe: XSS in breadcrumbs in page list view

Medium 5.4

In plain English

A medium-severity cross-site scripting in silverstripe-cms 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 27% 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 72.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Silverstripe CMS is an open source content management system. Prior to 6.2.1, page breadcrumbs in the CMS are vulnerable to cross-site scripting when viewed using the page list view, because page titles are rendered into the breadcrumb trail without being escaped. This issue is fixed in 6.2.1.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	silverstripe/cms	6.2.1	GHSA-w3cp-g2pf-65wh

Affected products (as reported)

Vendor	Product	Versions
silverstripe	silverstripe-cms	< 6.2.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

References

https://github.com/silverstripe/silverstripe-cms/security/advisories/GHSA-w3cp-g2pf-65wh x_refsource_CONFIRM
https://github.com/silverstripe/silverstripe-cms/pull/3175 x_refsource_MISC
https://github.com/silverstripe/silverstripe-cms/commit/62f9912baa18c80304f3fa8b6eca71bb5dc2d21e x_refsource_MISC
https://github.com/silverstripe/silverstripe-cms/releases/tag/6.2.1 x_refsource_MISC