What is CVE-2026-33698?

CVE-2026-33698 is a critical-severity vulnerability in Chamilo Chamilo-lms, classified under Files or Directories Accessible to External Parties. CVSS score: 9.8/10. Published 2026-04-10.

How severe is CVE-2026-33698?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Chamilo Chamilo-lms

CVE-2026-33698

Chamilo LMS is a learning management system. Prior to 1.11.38, a chained attack can enable otherwise-blocked PHP code from the main/install/ directory and allow an unauthenticated attacker to modify existing files or create new files where…

EPSS: 0.003 (24.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Chamilo Chamilo-lms — versions < 1.11.38
Chamilo Chamilo_lms

Weakness classification (CWE)

CWE-552 — Files or Directories Accessible to External Parties

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33698?: CVE-2026-33698 is a critical-severity vulnerability in Chamilo Chamilo-lms, classified under Files or Directories Accessible to External Parties. CVSS score: 9.8/10. Published 2026-04-10.
How severe is CVE-2026-33698?: Critical severity. CVSS v3 base score is 9.8 out of 10.