CVE-2020-9387Network attack vector

Account disclosure via unfiltered Elasticsearch results

Published Apr 30, 2020 · Updated Aug 4, 2024

Incorrect access control in Mahara 19.04 before 19.04.5 and 19.10 before 19.10.3 allows remote authenticated users to read account details. The Elasticsearch search implementation returns account records without enforcing the configured institution-isolation boundaries. Exposure requires Elasticsearch, authenticated search access, and the Isolated institutions setting; the disclosed impact is limited to account data.

CVSS severity4.3
Medium
EPSS probability0.72%
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 Mahara 19.04 before 19.04.5 and 19.10 before 19.10.3 allows remote authenticated users to read account details. The Elasticsearch search implementation returns account records without enforcing the configured institution-isolation boundaries. Exposure requires Elasticsearch, authenticated search access, and the Isolated institutions setting; the disclosed impact is limited to account data.

The record

CVE
CVE-2020-9387
Published
Apr 30, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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

4.3NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
3.5NIST National Vulnerability DatabaseAV:N/AC:M/Au:S/C:P/I:N/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

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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