CVE-2021-46013Public exploitNetwork attack vector

Remote code execution via unrestricted PHP upload

Published Jan 18, 2022 · Updated Aug 4, 2024

Unrestricted file upload in SourceCodester Free School Management Software 1.0 allows remote attackers to execute server-side code. The exam-question creation endpoint accepts a PHP file and stores it in the web-accessible /uploads/exam_question directory without blocking executable content. The published request targets an administrative endpoint and carries a session cookie, although NVD rates the attack as requiring no privileges.

CVSS severity9.8
Critical
EPSS probability3.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in SourceCodester Free School Management Software 1.0 allows remote attackers to execute server-side code. The exam-question creation endpoint accepts a PHP file and stores it in the web-accessible /uploads/exam_question directory without blocking executable content. The published request targets an administrative endpoint and carries a session cookie, although NVD rates the attack as requiring no privileges.

The record

CVE
CVE-2021-46013
Published
Jan 18, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-434, T1505.003
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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 privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
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.

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
PrivilegesUnavailable
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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