CVE-2024-8517Public exploitNetwork attack vector

Unauthenticated OS command execution via multipart field names

Published Sep 6, 2024 · Updated Nov 22, 2025

Command injection in SPIP before 4.3.2, 4.2.16, and 4.1.18 allows remote attackers to execute OS commands via multipart uploads. The BigUp Files::extraire_fichiers_valides method converts attacker-controlled multipart field paths into PHP expressions and passes them to eval without escaping embedded quotes. Any unauthenticated visitor who can reach a public SPIP form, including the password-reset page, can execute commands with the web server process's privileges.

CVSS severity9.8
Critical
EPSS probability94.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in SPIP before 4.3.2, 4.2.16, and 4.1.18 allows remote attackers to execute OS commands via multipart uploads. The BigUp Files::extraire_fichiers_valides method converts attacker-controlled multipart field paths into PHP expressions and passes them to eval without escaping embedded quotes. Any unauthenticated visitor who can reach a public SPIP form, including the password-reset page, can execute commands with the web server process's privileges.

The record

CVE
CVE-2024-8517
Published
Sep 6, 2024
Updated
Nov 22, 2025
Vendor
SPIP
Product
SPIP
Classifications
CWE-73, CWE-78, CAPEC-88, T1190, T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 22, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.18
  2. Affected versionversion=4.1.0 <=4.1.18
  3. Affected versionversion=4.2.0 <=4.2.15
  4. Affected versionversion=4.3.0 <=4.3.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SPIP · SPIPversion=0 <4.1.18; version=4.1.0 <=4.1.18; version=4.2.0 <=4.2.15; version=4.3.0 <=4.3.1

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 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-73External Control of File Name or Path
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1190Exploit Public-Facing Application
T1059Command and Scripting Interpreter

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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