CVE-2022-47854Public exploitNetwork attack vector

Remote code execution via path-traversing PHP upload

Published Jan 31, 2023 · Updated Mar 27, 2025

Arbitrary file upload in i-librarian 4.10 allows remote attackers to write executable PHP files via the PDF replacement interface. ajaxsupplement.php passes the unfiltered filename field, including traversal segments and a .php suffix, to move_uploaded_file after accepting content that begins with %PDF. A crafted multipart request can place attacker-controlled PHP outside the session upload directory, enabling code execution when the file is requested.

CVSS severity9.8
Critical
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in i-librarian 4.10 allows remote attackers to write executable PHP files via the PDF replacement interface. ajaxsupplement.php passes the unfiltered filename field, including traversal segments and a .php suffix, to move_uploaded_file after accepting content that begins with %PDF. A crafted multipart request can place attacker-controlled PHP outside the session upload directory, enabling code execution when the file is requested.

The record

CVE
CVE-2022-47854
Published
Jan 31, 2023
Updated
Mar 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 31, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8CISA-ADPCVSS: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
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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