CVE-2026-40543Network attack vector

Unauthenticated backup disclosure via unchecked endpoints

Published Jun 1, 2026 · Updated Jun 1, 2026

Missing authorization in SOPlanning 1.55 and earlier allows remote attackers to retrieve backup archives through exposed endpoints. The backup-related handlers return requested archives without checking authorization, exposing user databases, password hashes, and config.csv. No account or user interaction is required, and the disclosed data can support credential compromise and further access.

CVSS severity8.8
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in SOPlanning 1.55 and earlier allows remote attackers to retrieve backup archives through exposed endpoints. The backup-related handlers return requested archives without checking authorization, exposing user databases, password hashes, and config.csv. No account or user interaction is required, and the disclosed data can support credential compromise and further access.

The record

CVE
CVE-2026-40543
Published
Jun 1, 2026
Updated
Jun 1, 2026
Vendor
SOPlanning
Product
SOPlanning
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 1, 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=0 <=1.55

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SOPlanning · SOPlanningversion=0 <=1.55

Published CVSS scores

8.8CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA: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 exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

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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