CVE-2026-54720 json
Silverstripe Framework: Possible XSS attack through media embed
published 4mo ago modified 17d ago also EUVD-2026-41144 , GHSA-gvrw-qqp5-jgc5
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 18%
- public exploits
- 0
- none known
Summary
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/
Patch / fix
- packagist silverstripe/framework 6.2.2
- silverstripe framework 6.2.2
- silverstripe silverstripe 6.2.2
Is CVE-2026-54720 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 4mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | silverstripe/framework | <6.2.2 |
6.2.2 |
Affected products
- silverstripe silverstripe-framework
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/silverstripe/silverstripe-framework/pull/11993
web
-
github.com
/silverstripe/silverstripe-framework/commit/1bcb02adfc365c6436dc26ab2f6dd32d97f3979b
web
-
github.com
/silverstripe/silverstripe-framework/security/advisories/GHSA-gvrw-qqp5-jgc5
web
-
silverstripe.org
/download/security-releases/cve-2026-54720
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-54720
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/silverstripe/framework/CVE-2026-54720.yaml
web
-
github.com
/silverstripe/silverstripe-framework
package
-
github.com
/silverstripe/silverstripe-framework/releases/tag/6.2.2
web
Sources
- CVE List CVE-2026-54720
- GitHub Advisory GHSA-gvrw-qqp5-jgc5
- NVD CVE-2026-54720
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.