high7.5
CVE-2026-34752
Haraka affected by DoS via `__proto__` email header
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | Haraka | <= 3.1.3 | 3.1.4 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Haraka Project | Haraka | before 3.1.4 |