VYPR

CWE-204

Observable Response Discrepancy

BaseIncomplete

Description

The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere.

Hierarchy (View 1000)

Parents

Children

none

Related attack patterns (CAPEC)

CAPEC-331 · CAPEC-332 · CAPEC-541 · CAPEC-580

CVEs mapped to this weakness (179)

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  • CVE-2025-23214MedJan 20, 2025
    risk 0.38cvss epss 0.01

    Cosmos provides users the ability self-host a home server by acting as a secure gateway to your application, as well as a server manager. By monitoring the error code returned in the login, it is possible to figure out whether a user exist or not in the database. Patched in…

  • CVE-2022-41697MedDec 22, 2022
    risk 0.36cvss 5.3epss 0.20

    A user enumeration vulnerability exists in the login functionality of Ghost Foundation Ghost 5.9.4. A specially-crafted HTTP request can lead to a disclosure of sensitive information. An attacker can send a series of HTTP requests to trigger this vulnerability.

  • CVE-2026-28288MedFeb 27, 2026
    risk 0.35cvss 5.3epss 0.01

    Dify is an open-source LLM app development platform. Prior to 1.9.0, responses from the Dify API to existing and non-existent accounts differ, allowing an attacker to enumerate email addresses registered with Dify. Version 1.9.0 fixes the issue.

  • CVE-2025-62512MedFeb 24, 2026
    risk 0.35cvss 5.3epss 0.01

    Piwigo is an open source photo gallery application for the web. In version 15.5.0 and likely earlier 15.x releases, the password reset functionality in Piwigo allows an unauthenticated attacker to determine whether a given username or email address exists in the system. The…

  • CVE-2025-66307MedDec 1, 2025
    risk 0.35cvss 6.5epss 0.00

    This admin plugin for Grav is an HTML user interface that provides a convenient way to configure Grav and easily create and modify pages. Prior to 1.11.0-beta.1, a user enumeration and email disclosure vulnerability exists in Grav. The "Forgot Password" functionality at…

  • CVE-2025-34255MedOct 16, 2025
    risk 0.35cvss 5.3epss 0.01

    D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain an observable response discrepancy vulnerability. The application's 'Forgot Password' endpoint returns distinct JSON responses depending on whether the supplied email address is associated with an existing account.…

  • CVE-2025-34254MedOct 16, 2025
    risk 0.35cvss 5.3epss 0.01

    D-Link Nuclias Connect firmware versions <= 1.3.1.4 contain an observable response discrepancy vulnerability. The application's 'Login' endpoint returns distinct JSON responses depending on whether the supplied username is associated with an existing account. Because the…

  • CVE-2025-46047MedSep 2, 2025
    risk 0.35cvss 6.5epss 0.00

    A User enumeration vulnerability in the /CredentialsServlet/ForgotPassword endpoint in Silverpeas 6.4.1 and 6.4.2 allows remote attackers to determine valid usernames via the Login parameter.

  • CVE-2025-1101MedFeb 12, 2025
    risk 0.35cvss 5.3epss 0.01

    A CWE-204 "Observable Response Discrepancy" in the login page in Q-Free MaxTime less than or equal to version 2.11.0 allows an unauthenticated remote attacker to enumerate valid usernames via crafted HTTP requests.

  • CVE-2024-36510MedJan 14, 2025
    risk 0.35cvss 5.3epss 0.01

    An observable response discrepancy vulnerability [CWE-204] in FortiClientEMS 7.4.0, 7.2.0 through 7.2.4, 7.0 all versions, and FortiSOAR 7.5.0, 7.4.0 through 7.4.4, 7.3.0 through 7.3.2, 7.2 all versions, 7.0 all versions, 6.4 all versions may allow an unauthenticated attacker to…

  • CVE-2022-20633MedNov 15, 2024
    risk 0.35cvss 5.3epss 0.01

    A vulnerability in the web-based management interface of Cisco ECE could allow an unauthenticated, remote attacker to perform a username enumeration attack against an affected device. This vulnerability is due to differences in authentication responses that are sent back…

  • CVE-2024-39211MedJul 4, 2024
    risk 0.35cvss 5.3epss 0.01

    Kaiten 57.128.8 allows remote attackers to enumerate user accounts via a crafted POST request, because a login response contains a user_email field only if the user account exists.

  • CVE-2023-23449MedMay 15, 2023
    risk 0.35cvss 5.3epss 0.01

    Observable Response Discrepancy in SICK FTMg AIR FLOW SENSOR with Partnumbers 1100214, 1100215, 1100216, 1120114, 1120116, 1122524, 1122526 allows a remote attacker to gain information about valid usernames by analyzing challenge responses from the server via the REST interface.

  • CVE-2022-39315MedOct 25, 2022
    risk 0.35cvss 6.5epss 0.01

    Kirby is a Content Management System. Prior to versions 3.5.8.2, 3.6.6.2, 3.7.5.1, and 3.8.1, a user enumeration vulnerability affects all Kirby sites with user accounts unless Kirby's API and Panel are disabled in the config. It can only be exploited for targeted attacks…

  • CVE-2022-22520MedSep 14, 2022
    risk 0.35cvss 5.3epss 0.01

    A remote, unauthenticated attacker can enumerate valid users by sending specific requests to the webservice of MB connect line mymbCONNECT24, mbCONNECT24 and Helmholz myREX24 and myREX24.virtual in all versions through v2.11.2.

  • CVE-2022-1989MedAug 23, 2022
    risk 0.35cvss 5.3epss 0.01

    All CODESYS Visualization versions before V4.2.0.0 generate a login dialog vulnerable to information exposure allowing a remote, unauthenticated attacker to enumerate valid users.

  • CVE-2022-31248MedJun 22, 2022
    risk 0.35cvss 5.3epss 0.01

    A Observable Response Discrepancy vulnerability in spacewalk-java of SUSE Manager Server 4.1, SUSE Manager Server 4.2 allows remote attackers to discover valid usernames. This issue affects: SUSE Manager Server 4.1 spacewalk-java versions prior to 4.1.46-1. SUSE Manager Server…

  • CVE-2022-0564MedFeb 21, 2022
    risk 0.35cvss 5.3epss 0.01

    A vulnerability in Qlik Sense Enterprise on Windows could allow an remote attacker to enumerate domain user accounts. An attacker could exploit this vulnerability by sending authentication requests to an affected system. A successful exploit could allow the attacker to compare…

  • CVE-2016-9499MedJul 13, 2018
    risk 0.35cvss 5.3epss 0.08

    Accellion FTP server prior to version FTA_9_12_220 only returns the username in the server response if the username is invalid. An attacker may use this information to determine valid user accounts and enumerate them.

  • CVE-2026-45620MedMay 29, 2026
    risk 0.34cvss 5.3epss 0.00

    WWBN AVideo is an open source video platform. In 29.0 and earlier, objects/mention.json.php has no User::loginCheck() or admin gate. It only has an entry guard: preg_match('/^@/', $_REQUEST['term']) and hard-coded rowCount=10. This enables unauthenticated user enumeration.