CVE-2026-54256: Winter: Authenticated IDOR in backend FileUpload widget allows cross-user access to attachment metadata

medium Affects winter/wn-backend-module. Feed 2026.10.29.1, updated 2026-10-28; published 2026-08-20.

Winter: Authenticated IDOR in backend FileUpload widget allows cross-user access to attachment metadata

Package: winter/wn-backend-module Composer
Affected versions: <1.2.13
Fixed in: 1.2.13
Severity: medium CVSS 5.4
Exploitation: not on CISA KEV · EPSS 0% (15.0th percentile)
Published: 2026-08-20
Source: osv.dev

References

NVD record winter/wn-backend-module advisories

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