CVE-2023-41009Public exploitNetwork attack vector

Authenticated code execution via traversal file upload

Published Sep 5, 2023 · Updated Jul 9, 2026

Unrestricted file upload in adlered bolo-solo 2.6 allows remote authenticated users to execute arbitrary code through a crafted WAR file. The /bolo/import/markdown handler accepts a traversal-bearing multipart filename and does not restrict dangerous types inside the uploaded archive. After login, concurrent import requests race to place and locate a web shell, enabling server-side code execution.

CVSS severity9.8
Critical
EPSS probability1.68%
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 adlered bolo-solo 2.6 allows remote authenticated users to execute arbitrary code through a crafted WAR file. The /bolo/import/markdown handler accepts a traversal-bearing multipart filename and does not restrict dangerous types inside the uploaded archive. After login, concurrent import requests race to place and locate a web shell, enabling server-side code execution.

The record

CVE
CVE-2023-41009
Published
Sep 5, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS: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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application
T1505.003Web Shell

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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