CVE-2026-59721CWE-77CWE-78CWE-915

Hoppscotch: Admin RCE via MAILER_SMTP_URL nodemailer sendmail-transport injection

High · published July 9, 2026

CVSS v3.1
7.2
EPSS
1%
Percentile
62.8
In the wild
Unconfirmed
What it is

Hoppscotch is an open source API development ecosystem. Prior to 2026.6.0, the updateInfraConfigs GraphQL mutation in admin/infra.resolver.ts accepts an attacker-controlled MAILER_SMTP_URL value, and validateSMTPUrl in utils.ts permits path, query, or fragment content that nodemailer parses into sendmail transport options, allowing an admin to execute arbitrary commands as root in the backend container after restart and mail sending. This issue is fixed in version 2026.6.0.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01009 · 62.8th percentile
Weaknesses
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection'); CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'); CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes
Published
2026-07-09T17:24Z
EPSS history
Timeline
  • 09 JUL 17:24Z
    Hoppscotch: Admin RCE via MAILER_SMTP_URL nodemailer sendmail-transport injection
    cvelistv5