CVE-2024-52523

Credential disclosure via untyped external-storage password

Published Nov 15, 2024 · Updated Nov 15, 2024

Information disclosure in Nextcloud Server allows attackers with an active user session to read fixed external-storage credentials through its API. The OwnCloud external-storage backend fails to type its password definition as a password value, causing the API to serialize the fixed credential back to the frontend. Exploitation requires a user- or administrator-defined external storage using fixed credentials; the resulting impact is limited to credential disclosure.

CVSS severity4.6
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Nextcloud Server allows attackers with an active user session to read fixed external-storage credentials through its API. The OwnCloud external-storage backend fails to type its password definition as a password value, causing the API to serialize the fixed credential back to the frontend. Exploitation requires a user- or administrator-defined external storage using fixed credentials; the resulting impact is limited to credential disclosure.

The record

CVE
CVE-2024-52523
Published
Nov 15, 2024
Updated
Nov 15, 2024
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-200, T1555
Attack vector
Unavailable
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 15, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 28.0.0, < 28.0.12
  2. Affected versionversion=>= 29.0.0, < 29.0.9
  3. Affected versionversion=>= 30.0.0, < 30.0.2

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=>= 28.0.0, < 28.0.12; version=>= 29.0.0, < 29.0.9; version=>= 30.0.0, < 30.0.2

Published CVSS scores

4.6GitHubCVSS:3.0/AV:P/AC:H/PR:H/UI:R/S:C/C:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1555Credentials from Password Stores

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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