CVE-2026-4020Known exploitationNetwork attack vector

Unauthenticated system report disclosure via open REST endpoint

Published Mar 31, 2026 · Updated Mar 31, 2026

Information exposure in Rocketgenius Gravity SMTP 2.1.4 and earlier allows remote attackers to read system reports through a REST endpoint. The mock-data route uses an always-true permission callback, and register_connector_data() fills its JSON response with the full System Report. No account or user interaction is required; one request discloses server, database, WordPress, plugin, theme, path, table, and configured API credential details.

CVSS severity7.5
High
EPSS probability39.98%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Rocketgenius Gravity SMTP 2.1.4 and earlier allows remote attackers to read system reports through a REST endpoint. The mock-data route uses an always-true permission callback, and register_connector_data() fills its JSON response with the full System Report. No account or user interaction is required; one request discloses server, database, WordPress, plugin, theme, path, table, and configured API credential details.

The record

CVE
CVE-2026-4020
Published
Mar 31, 2026
Updated
Mar 31, 2026
Vendor
Rocketgenius
Product
Gravity SMTP
Classifications
CWE-200, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=2.1.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rocketgenius · Gravity SMTPversion=* <=2.1.4

Published CVSS scores

7.5Wordfence CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.3Wordfence Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Reported exploitation

Technologies

Your stack

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Your stack

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