CVE-2026-54717: silverstripe-cms · Cross-site Scripting
Affects silverstripe-cmsSource CVE Database V5
Not known to be exploited · CVSS 5.4 Medium : upgrade to 6.2.1 when convenient.
Data as of 5 Nov 2026, 23:24 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 6.2.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 6 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade silverstripe-cms and silverstripe/silverstripe-cms to 6.2.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| silverstripesilverstripe-cms | Affected
| Fixed in
|
GitHubsilverstripe/silverstripe-cmspkg:github/silverstripe/silverstripe-cmsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Silverstripe CMS to version 6.2.1 or later, where the vulnerability is fixed by properly escaping page titles in the breadcrumb trail. No other mitigation or temporary workaround is indicated.
Description
Silverstripe CMS versions prior to 6.2.1 have a cross-site scripting (XSS) vulnerability in the page breadcrumbs feature within the CMS page list view. This occurs because page titles are rendered into the breadcrumb trail without proper escaping. The vulnerability is fixed in version 6.2.1.
References
- github.com/silverstripe/silverstripe-cms/security/advisories/GHSA-w3cp-g2pf-65wh (opens in a new tab)
- github.com/silverstripe/silverstripe-cms/pull/3175 (opens in a new tab)
- github.com/silverstripe/silverstripe-cms/commit/62f9912baa18c80304f3fa8b6eca71bb5dc2d21e (opens in a new tab)
- github.com/silverstripe/silverstripe-cms/releases/tag/6.2.1 (opens in a new tab)