CVE-2026-63179: Winter: Local File Inclusion through @import directives in LESS compilation of backend customizable stylesheets and theme assets

medium Affects winter/wn-backend-module. Feed 2026.10.29.4, updated 2026-10-29; published 2026-08-20.

Winter: Local File Inclusion through @import directives in LESS compilation of backend customizable stylesheets and theme assets

Package: winter/wn-backend-module Composer
Affected versions: <1.2.13
Fixed in: 1.2.13
Severity: medium CVSS 4.9
Exploitation: not on CISA KEV · EPSS 1% (43.8th percentile)
Published: 2026-08-20
Source: osv.dev

References

NVD record winter/wn-backend-module advisories

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# then
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Related advisories

CVE-2023-52085 low Winter CMS Local File Inclusion through Server Side Template Injection same package: winter/wn-backend-module
CVE-2026-27591 critical Winter vulnerable to privilege escalation by authenticated backend users same package: winter/wn-backend-module
CVE-2026-35445 high Winter: Authenticated backend users can bypass Users controller permission checks same package: winter/wn-backend-module
CVE-2026-32257 high Winter: Stored XSS through Brand Settings custom styles same package: winter/wn-backend-module
CVE-2026-32258 high Winter: Stored XSS through Editor Settings custom styles same package: winter/wn-backend-module
CVE-2023-52084 low Winter CMS Stored XSS through Backend ColorPicker FormWidget same package: winter/wn-backend-module