CVE-2023-34962Network attack vector

Cross-account note disclosure and modification via unchecked ownership

Published Jun 8, 2023 · Updated Jan 6, 2025

Incorrect access control in Chamilo LMS 1.11.0 through 1.11.18 allows remote authenticated users to read and modify other students' notes. The notebook edit route accepts a requested notebook_id and loads the record without comparing its user_id with the current user before displaying and updating it. A student account is sufficient; the consequence is limited to unauthorized reading and alteration of personal notes, with no reported service interruption.

CVSS severity8.1
High
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in Chamilo LMS 1.11.0 through 1.11.18 allows remote authenticated users to read and modify other students' notes. The notebook edit route accepts a requested notebook_id and loads the record without comparing its user_id with the current user before displaying and updating it. A student account is sufficient; the consequence is limited to unauthorized reading and alteration of personal notes, with no reported service interruption.

The record

CVE
CVE-2023-34962
Published
Jun 8, 2023
Updated
Jan 6, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1565, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1565Data Manipulation
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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