Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
Winter CMS is a content management system built on the Laravel PHP framework. In versions up to and including 1.2.12, the backend FileUpload form widget trusted an attacker-controlled file_id POST parameter when resolving the attachment it operates on, allowing an authenticated backend user to read and modify attachment records belonging to other users or records. The widget's getFileRecord() lookup resolved the posted id against the global system_files table without verifying that the file belonged to the widget's own relation, parent record, or deferred-binding session. Because all attachments share a single File model and table and attachment ids are sequential integers that are easily enumerated, a user reaching any form with a fileupload field, including the built-in My Account avatar field that requires no specific permission, could target arbitrary attachments to modify their title and description via onSaveAttachmentConfig and change their sort order via onSortAttachments, which passed posted ids straight to an unscoped update. CSRF tokens remain enforced, so exploitation requires a valid authenticated backend session with any level of access. This issue is fixed in version 1.2.13.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-08-26 | 2 | Disclosure1General1 |
| 2026-08-27 | 1 | Disclosure1 |
CVE-2026-54256 Winter CMS Attachment Record Modification via FileUpload Widget https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-54256
Post summary
CVE-2026-54256 refers to an Attachment Record Modification vulnerability in Winter CMS via the FileUpload widget; the post merely links to a vulnerability details page without further context on exploitation, patches, or confirmation of active attacks.
🚨*CVE* CVE-2026-54256 Winter CMS is a content management system built on the Laravel PHP framework. In versions up to and including 1.2.12, the backend FileUpload form widget trusted an at… https://www.cve.org/CVERecord?id=CVE-2026-54256 ----- Traducción: CVE-2026-54256 Win… https://infoflow.cloud`
Post summary
The post announces CVE‑2026‑54256 affecting Winter CMS’s file upload widget, providing a link to the official CVE record but no further technical or exploitation details.
CVE-2026-54256 Winter CMS is a content management system built on the Laravel PHP framework. In versions up to and including 1.2.12, the backend FileUpload form widget trusted an at… https://www.cve.org/CVERecord?id=CVE-2026-54256
Post summary
The post provides a brief mention of CVE-2026-54256, noting the affected Winter CMS version and a generic reference to a trust issue, without detailed technical or actionable information.