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[ CVE-2026-113666 · Published 20 Oct 2026 ]

ApostropheCMS: Authenticated projection-exclusion prototype-member deletion in @apostrophecms/db-connect causes process-wide denial of service

CVSS 7.1 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

ApostropheCMS is an open-source Node.js content management system. Prior to 1.1.0 of db-connect and 4.33.0 of ApostropheCMS, an account with view-draft access can submit a projection exclusion path that traverses through a constructor prototype chain to a shared prototype member when a consumer uses a SQLite, PostgreSQL, or multipostgres adapter and has a matching document. Every editing role has view-draft access, while guestApiAccess broadens this prerequisite to any logged-in account. The unsetNestedField helper then deletes the shared runtime member, causing persistent process-wide integrity and availability effects; the default MongoDB adapter is not affected. This issue is fixed in db-connect 1.1.0 and ApostropheCMS 4.33.0.

[ Fixes ]Fixes and patches

  • @apostrophecms/db-connect 1.1.0Fixed version · GitHub Advisories · npm package @apostrophecms/db-connect: upgrade to 1.1.0 or later (affected < 1.1.0)
  • apostrophe 4.33.0Fixed version · GitHub Advisories · npm package apostrophe: upgrade to 4.33.0 or later (affected < 4.33.0)

[ Packages ]Affected open-source packages

[ References ]References