THREATPORT/VULNERABILITY/CVE-2021-31933
HIGH SEVERITY

CVE-2021-31933

Chamilo vulnerability

CVSS
7.2
EPSS
13.9%
EPSS pct
96th
Exploited
No known
A remote code execution vulnerability exists in Chamilo through 1.11.14 due to improper input sanitization of a parameter used for file uploads, and improper file-extension filtering for certain filenames (e.g., .phar or .pht). A remote authenticated administrator is able to upload a file containing arbitrary PHP code into specific directories via main/inc/lib/fileUpload.lib.php directory traversal to achieve PHP code execution.
Affected vendor
Chamilo
Affected product
Chamilo
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2021-04-30

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring high privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 13.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2021-31933

  • Confirm whether Chamilo Chamilo is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-31933.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-31933

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-31933 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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