CVE-2023-48379Network attack vector

Internal network discovery via unfiltered URL parameter

Published Dec 15, 2023 · Updated Aug 2, 2024

Blind SSRF in Softnext Technologies Corp. Mail SQR Expert 230330 and earlier allows remote attackers to discover internal network topology. An undisclosed function inadequately filters a URL parameter before causing the server to issue attacker-selected HTTP(S) requests, and response errors reveal reachable internal destinations. No authentication or user interaction is required; the published impact is limited to topology disclosure through the blind response-error oracle.

CVSS severity5.3
Medium
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Blind SSRF in Softnext Technologies Corp. Mail SQR Expert 230330 and earlier allows remote attackers to discover internal network topology. An undisclosed function inadequately filters a URL parameter before causing the server to issue attacker-selected HTTP(S) requests, and response errors reveal reachable internal destinations. No authentication or user interaction is required; the published impact is limited to topology disclosure through the blind response-error oracle.

The record

CVE
CVE-2023-48379
Published
Dec 15, 2023
Updated
Aug 2, 2024
Vendor
Softnext Technologies Corp.
Product
Mail SQR Expert
Classifications
CWE-918, T1046
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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 version<=230330

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Softnext Technologies Corp. · Mail SQR Expert<=230330

Published CVSS scores

5.3TWCERT/CCCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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