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OpenAdvisories
High · 8.7 CVE-2026-34752 EUVD-2026-18509GHSA-xph3-r2jf-4vp3

Haraka affected by DoS via `__proto__` email header

Published Apr 2, 2026 · Updated Apr 3, 2026 · Assigned by GitHub_M

Description

Haraka is a Node.js mail server. Prior to version 3.1.4, sending an email with __proto__: as a header name crashes the Haraka worker process. This issue has been patched in version 3.1.4.

Affected products

VendorProductAffectedFixed
haraka Haraka < 3.1.4 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm Haraka < 3.1.4 3.1.4 GHSA-xph3-r2jf-4vp3

References