Vulnerability in Haraka

CVE-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.

EPSS: 0.000 (7.4th percentile) — read the EPSS interpretation.

Affected products

Haraka — versions < 3.1.4

Weakness classification (CWE)

CWE-248

References

https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3 (x_refsource_CONFIRM)
https://github.com/haraka/Haraka/releases/tag/v3.1.4 (x_refsource_MISC)