Haraka is a Node.js mail server.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Apr 2, 2026 · NIST NVD

   Detected

   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.

2. Oct 6, 2026 · NIST NVD

   Updated

   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

• cpe haraka project/harakaversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-34752

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-34752

  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.

  nvd.nist.gov

References

• Release Notes · github.com
• Exploit · github.com