Hoppscotch: Admin RCE via MAILER_SMTP_URL nodemailer sendmail-transport injection

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Summary

CVECVE-2026-59721
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-09 18:16:57 UTC
Updated2026-07-09 20:16:30 UTC
DescriptionHoppscotch 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.

Risk And Classification

Primary CVSS: v3.1 7.2 HIGH from [email protected]

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

Problem Types: CWE-77 | CWE-78 | CWE-915 | CWE-77 CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') | CWE-78 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | CWE-915 CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED7.2HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Hoppscotch Hoppscotch affected < 2026.6.0 Not specified

References

ReferenceSourceLinkTags
github.com/hoppscotch/hoppscotch/commit/73a88c82b1b2cada26cc4b2bc095b545... [email protected] github.com
github.com/hoppscotch/hoppscotch/security/advisories/GHSA-v7q6-r45w-2c6r 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/hoppscotch/hoppscotch/pull/6413 [email protected] github.com
github.com/hoppscotch/hoppscotch/releases/tag/2026.6.0 [email protected] github.com
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