CVE-2026-34752

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/2/2026

Last Modified4/3/2026

Sourcenvd

Honeypot Sightings0

Affected Products

haraka_project:haraka

Weaknesses (CWE)

CWE-248

References

https://github.com/haraka/Haraka/releases/tag/v3.1.4(security-advisories@github.com)

https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3(security-advisories@github.com)

IOC Correlations

No correlations recorded

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