CVE-2022-40407Public exploitNetwork attack vector

Authenticated code execution via unchecked ZIP paths

Published Sep 29, 2022 · Updated May 20, 2025

Path traversal in Chamilo LMS before 1.11.16 allows remote authenticated users to execute arbitrary code through a crafted ZIP upload. The ZIP extraction flow accepts ../ path segments in archive entry names and writes a supplied PHP file outside the intended upload directory. A standard user needs course assignment access and a modified upload-finalization request; an administrator can invoke extraction through the document upload interface, after which a request to the written PHP file executes it.

CVSS severity8.8
High
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Chamilo LMS before 1.11.16 allows remote authenticated users to execute arbitrary code through a crafted ZIP upload. The ZIP extraction flow accepts ../ path segments in archive entry names and writes a supplied PHP file outside the intended upload directory. A standard user needs course assignment access and a modified upload-finalization request; an administrator can invoke extraction through the document upload interface, after which a request to the written PHP file executes it.

The record

CVE
CVE-2022-40407
Published
Sep 29, 2022
Updated
May 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 29, 2022CVE publishedPublication date reported by the CVE source.
  2. May 20, 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?

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

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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 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
T1505.003Server Software Component: Web 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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