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OpenAdvisories
High · 7.1 CVE-2026-71553 EUVD-2026-60442GHSA-vmg4-6gfg-83qx

ApostropheCMS: 2nd-order prototype pollution via PATCH leading to single-request persistent DoS

Published Aug 17, 2026 · Updated Aug 17, 2026 · Assigned by GitHub_M

Description

ApostropheCMS is an open-source Node.js content management system. In 4.32.0 and earlier, PATCH /api/v1/article/:id accepts the inherited path toString.call and passes it through the utility module to apos.util.set() and apos.util.get(), allowing an authenticated editor to overwrite the shared Object.prototype.toString function's call property and cause a persistent process-wide denial of service until restart.

Affected products

VendorProductAffectedFixed
apostrophecms apostrophe <= 4.32.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm apostrophe < 4.32.1 4.32.1 GHSA-vmg4-6gfg-83qx

References