CVE-2023-32319Network attack vector

Credential brute force via unthrottled WebDAV Basic Auth

Published May 26, 2023 · Updated Jan 14, 2025

Missing login throttling in Nextcloud Server 24.0.0 through 24.0.10 and 25.0.0 through 25.0.4 allows remote attackers to brute-force credentials. The WebDAV Basic Authentication path does not apply brute-force protection when the supplied username is not an email address, allowing repeated password guesses. Exploitation requires a reachable WebDAV endpoint and a non-email account name; a correct guess grants the access assigned to that account.

CVSS severity8.1
High
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing login throttling in Nextcloud Server 24.0.0 through 24.0.10 and 25.0.0 through 25.0.4 allows remote attackers to brute-force credentials. The WebDAV Basic Authentication path does not apply brute-force protection when the supplied username is not an email address, allowing repeated password guesses. Exploitation requires a reachable WebDAV endpoint and a non-email account name; a correct guess grants the access assigned to that account.

The record

CVE
CVE-2023-32319
Published
May 26, 2023
Updated
Jan 14, 2025
Vendor
Nextcloud GmbH
Product
Security Advisories
Classifications
CWE-307, CAPEC-49, T1110.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 26, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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?

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

  1. Affected versionversion=>= 24.0.0, < 24.0.11
  2. Affected versionversion=>= 25.0.0, < 25.0.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Nextcloud GmbH · Security Advisoriesversion=>= 24.0.0, < 24.0.11; version=>= 25.0.0, < 25.0.5

Published CVSS scores

8.1GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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 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-307Improper Restriction of Excessive Authentication Attempts
CAPEC-49Password Brute Forcing
T1110.001Password Guessing

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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