Arbitrary file upload in Spip

CVE-2021-44123

SPIP 4.0.0 is affected by a remote command execution vulnerability. To exploit the vulnerability, an attacker must craft a malicious picture with a double extension, upload it and then click on it to execute it.

Vulnerability class: Unrestricted File Upload

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.024 (83.4th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-44123: held from 0.024 to 0.024.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

  • Spip — versions 4.0.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-44123?
CVE-2021-44123 is a high-severity vulnerability in Spip, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2022-01-26.
How severe is CVE-2021-44123?
High severity. CVSS v3 base score is 8.8 out of 10.