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VulnerabilityPublished

CVE-2026-54720: silverstripe-framework · Cross-site Scripting

Affects silverstripe-frameworkSource CVE Database V5

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Not known to be exploited · CVSS 5.4 Medium : upgrade to 6.2.2 when convenient.

Data as of 13 Nov 2026, 23:54 UTC

CVSS 3.1 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 18% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.2.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 1 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 13 Nov 2026.

What to do

Upgrade silverstripe-framework and silverstripe/silverstripe-framework to 6.2.2.

Affected software

ProductAffectedFixed in
silverstripesilverstripe-frameworkAffected
  • <6.2.2
Fixed in
  • 6.2.2
Packagistsilverstripe/silverstripe-frameworkpkg:composer/silverstripe/silverstripe-frameworkOther threatsAffected
  • <6.2.2
Fixed in
  • 6.2.2

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Silverstripe Framework to version 6.2.2 or later, where this vulnerability has been fixed. No other official remediation or temporary fixes are documented. Patch status is confirmed by the vendor advisory stating the fix in 6.2.2.

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/

References

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