CVE-2026-27591: Winter vulnerable to privilege escalation by authenticated backend users

critical Affects winter/wn-backend-module. Feed 2026.10.29.1, updated 2026-10-28; published 2026-03-12; advisory modified 2026-03-14.

Winter vulnerable to privilege escalation by authenticated backend users

Package: winter/wn-backend-module Composer
Affected versions: >=1.2.0 and <1.2.12 or >=1.1.0 and <1.1.12 or <1.0.477
Fixed in: 1.2.12, 1.1.12, 1.0.477
Severity: critical CVSS 9.9
Exploitation: not on CISA KEV · EPSS 1% (52.6th percentile)
Published: 2026-03-12
Source: osv.dev

References

CWE-284 CWE-639 CWE-915

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