# CVE-2023-27372: SPIP - RCE

> Live exploitation tracking for CVE-2023-27372 by the CrowdSec Live Exploit Tracker, built from real-world attack data crowdsourced from CrowdSec's global network.

Page: https://tracker.crowdsec.net/cves/CVE-2023-27372

## Key facts

- **Exploitation phase:** Limited Exploitation. The vulnerability is known but shows very limited attacker interest or exploitation activity.
- **CVSS score:** 9.8
- **Public exploit available:** Yes
- **Affected products:** SPIP
- **Weaknesses:** CWE-502 (Deserialization of Untrusted Data)
- **Tags:** cms

## Description

SPIP before 4.2.1 allows Remote Code Execution via form values in the public area because serialization is mishandled. The fixed versions are 3.2.18, 4.0.10, 4.1.8, and 4.2.1.

## CrowdSec analysis

[CVE-2023-27372](https://euvd.enisa.europa.eu/vulnerability/CVE-2023-27372) is a critical vulnerability in SPIP that enables remote code execution by abusing improperly handled serialized form data within its public interface.

CrowdSec has been tracking this vulnerability and its exploits since 22nd of January 2025.

Insights from the CrowdSec network reveal that the attackers trying to exploit CVE-2023-27372 are composed of a fairly even mix of opportunistic and targeted actors. Some attackers employ preliminary reconnaissance, while others use indiscriminate scanning.
Telemetry from the CrowdSec network also shows that exploitation activity for CVE-2023-27372 remains steady week-over-week. Attack volumes are consistent with long-term trends, indicating sustained interest from threat actors. CVE-2023-27372 continues to be an active part of the threat landscape and will likely remain this way for the forseeable future.

Observed attack patterns target URLs containing `/spip.php?page=spip_pass`.

## Timeline

- 2023-02-28: CVE Published. CVE-2023-27372 is published to NVD.
- 2025-01-22: Rule Released. CrowdSec releases a rule to detect CVE-2023-27372 exploitation attempts against the CrowdSec Network.
- 2025-01-22: CrowdSec First Seen. CrowdSec observes in-the-wild exploitation of CVE-2023-27372 for the first time.

## References

- https://blog.spip.net/Mise-a-jour-critique-de-securite-sortie-de-SPIP-4-2-1-SPIP-4-1-8-SPIP-4-0-10-et.html
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-27372.yaml

## Live exploitation data

The [Live Exploit Tracker page](https://tracker.crowdsec.net/cves/CVE-2023-27372) follows observed exploitation activity for CVE-2023-27372. [Request an API key](https://tracker.crowdsec.net/request-api-key) for full access to its exploitation timeline, attacking IP addresses and blocklists.