CVE-2026-34752

EUVD-2026-18509
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.7 HIGH
NETWORK
LOW
NONE
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
haraka_projectharaka
𝑥
< 3.1.4
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://github.com/haraka/Haraka/releases/tag/v3.1.4
https://github.com/haraka/Haraka/security/advisories/GHSA-xph3-r2jf-4vp3