Incorrect access control in Chamilo 1.11.* up to 1.11.18 allows a student subscribed to a given course to download documents belonging to a…

published 2023-06-08 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-38997

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits: 0; none known

Incorrect access control in Chamilo 1.11.* up to 1.11.18 allows a student subscribed to a given course to download documents belonging to another student if they know the document's ID.

Patch / fix

links 1

github.com/chamilo/chamilo-lms@0c1c29d commit

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 22 mo ago (2025-01-06)

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Classification

Weakness

CWE-863 Incorrect Authorization

References

github.com /chamilo/chamilo-lms/commit/0c1c29db18856a6f25e21d0405dda2c20b35ff3a
patch
support.chamilo.org /projects/1/wiki/Security_issues#Issue-109-2023-04-15-Moderate-impact-Moderate-risk-IDOR-in-workstudent-public
issue-tracking, vendor-advisory

Sources

CVE List CVE-2023-34958
NVD CVE-2023-34958

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary