CVE-2023-2473Network attack vector

Service interruption via inefficient password hashing

Published May 2, 2023 · Updated Jan 30, 2025

Inefficient password-hash calculation in Dreamer CMS 4.1.0 through 4.1.3 allows remote authenticated users to interrupt service. The updatePwd function in UserController.java performs a password-hash calculation with inefficient algorithmic complexity, but the published record does not identify the algorithm or triggering input characteristic. A valid account and access to the password-change endpoint are required; crafted requests consume processing resources and degrade availability.

CVSS severity4.3
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inefficient password-hash calculation in Dreamer CMS 4.1.0 through 4.1.3 allows remote authenticated users to interrupt service. The updatePwd function in UserController.java performs a password-hash calculation with inefficient algorithmic complexity, but the published record does not identify the algorithm or triggering input characteristic. A valid account and access to the password-change endpoint are required; crafted requests consume processing resources and degrade availability.

The record

CVE
CVE-2023-2473
Published
May 2, 2023
Updated
Jan 30, 2025
Vendor
Dreamer CMS Project
Product
Dreamer CMS
Classifications
CWE-407, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 2, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 30, 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=4.1.0
  2. Affected versionversion=4.1.1
  3. Affected versionversion=4.1.2
  4. Affected versionversion=4.1.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Dreamer CMS Project · Dreamer CMSversion=4.1.0; version=4.1.1; version=4.1.2; version=4.1.3

Published CVSS scores

4.3VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.0VulDB CNAAV:N/AC:L/Au:S/C:N/I:N/A:P
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-407Inefficient Algorithmic Complexity
T1499Endpoint Denial of Service

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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