CVE-2024-27115Public exploitNetwork attack vector

Remote code execution via unrestricted file upload

Published Sep 11, 2024 · Updated Mar 11, 2025

Unrestricted file upload in Simple Online Planning SO Planning before 1.52.02 allows remote attackers to execute server-side code. The process/upload.php endpoint moves files under their original names into www/upload/files// without restricting types or extensions, allowing a .htaccess file to enable an uploaded PHP payload. Unauthenticated reachability requires non-default public view mode, which grants a publicspl session; otherwise valid application credentials are required.

CVSS severity10.0
Critical
EPSS probability4.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Unrestricted file upload in Simple Online Planning SO Planning before 1.52.02 allows remote attackers to execute server-side code. The process/upload.php endpoint moves files under their original names into www/upload/files// without restricting types or extensions, allowing a .htaccess file to enable an uploaded PHP payload. Unauthenticated reachability requires non-default public view mode, which grants a publicspl session; otherwise valid application credentials are required.

The record

CVE
CVE-2024-27115
Published
Sep 11, 2024
Updated
Mar 11, 2025
Vendor
Simple Online Planning
Product
SO Planning
Classifications
CWE-434, CAPEC-549, T1505.003, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 2025Record 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 <1.52.01
  2. Affected versionversion=before 1.52.01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Simple Online Planning · SO Planningversion=0 <1.52.01; version=before 1.52.01

Published CVSS scores

10.0Dutch Institute for Vulnerability DisclosureCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:I/V:C/RE:M/U:Red
9.8National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-549Local Execution of Code
T1505.003Web Shell
T1190Exploit Public-Facing Application

Public exploit references

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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