CWE-203
826 CVEs • Abstraction: Base
Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
CVEs (826)
CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS |
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H3C SSL VPN contains a user enumeration vulnerability that allows attackers to identify valid usernames through the 'txtUsrName' POST parameter. Attackers can submit different usernames to the login_submit.cgi endpoint a...Show more |
GLPI 9.5.7 contains a username enumeration vulnerability in the lost password recovery mechanism that allows attackers to validate email addresses. Attackers can systematically test email addresses by submitting requests...Show more |
There is a username enumeration via local user login in Entrinsik Informer v5.10.1 which allows malicious users to enumerate users by entering an OTP code and new password then reviewing application responses. |
In JetBrains TeamCity before 2025.11 port enumeration was possible via the Perforce connection test |
Multiple constant-time implementations in wolfSSL before version 5.8.4 may be transformed into non-constant-time binary by LLVM optimizations, which can potentially result in observable timing discrepancies and lead to i...Show more |
1Spinetix 1Fusion Digital Signage Jun 17, 2026 Dec 10, 2025 6.9 MEDIUM· v4 5.3 MEDIUM· v3 N/A· v2 SpinetiX Fusion Digital Signage 3.4.8 contains a username enumeration vulnerability in its login script that allows attackers to identify valid user accounts. Attackers can send crafted login requests with different user...Show more |
XiangShan Nanhu V2 and XiangShan Kunmighu V3 were discovered to use speculative execution and indirect branch prediction, allowing attackers to access sensitive information via side-channel analysis of the data cache. |
User enumeration in Nagvis' Checkmk MultisiteAuth before version 1.9.48 allows an unauthenticated attacker to enumerate Checkmk usernames. |
1Entrust 5Nshield 5c Firmware Nshield Connect Xc Base FirmwareNshield Connect Xc High Firmware+2 moreAug 26, 2026 Dec 2, 2025 N/A· v4 7.2 HIGH· v3 N/A· v2 Entrust nShield Connect XC, nShield 5c, and nShield HSMi through 13.6.11, or 13.7 (patched in 13.6.12 (LTS) and 13.9.0 (STS)), allow a physically proximate attacker with elevated privileges to falsify tamper events by ac...Show more |
An issue in Austrian Academy of Sciences (AW) Austrian Archaeological Institute OpenAtlas v.8.12.0 allows a remote attacker to obtain sensitive information via the login error messages |
Vulnerability in X25519 constant-time cryptographic implementations due to timing side channels introduced by compiler optimizations and CPU architecture limitations, specifically with the Xtensa-based ESP32 chips. If ta...Show more |
The server previously verified the TLS 1.3 PSK binder using a non-constant time method which could potentially leak information about the PSK binder |
Directus is a real-time API and App dashboard for managing SQL database content. An observable difference in error messaging was found in the Directus REST API in versions of Directus prior to version 11.13.0. The `/item...Show more |
ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server respo...Show more |
Observable Discrepancy, Exposure of Sensitive Information to an Unauthorized Actor, Exposure of Private Personal Information to an Unauthorized Actor vulnerability in CBK Soft Software Hardware Electronic Computer System...Show more |
IBM Aspera 5.0.0 through 5.0.13.1
could disclose sensitive user information from the system to an authenticated user due to an observable discrepancy of returned data. |
A weakness has been identified in JhumanJ OpnForm up to 1.9.3. This affects an unknown function of the file /api/password/email of the component Forgotten Password Handler. This manipulation causes information exposure t...Show more |
Improper handling of authentication requests lead to a user enumeration vector in the passkey authentication method. |
Description: VMware NSX contains a username enumeration vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially leading to unauthorized access attempts. Impact: User...Show more |
1Wso2 3Identity Server Identity Server As Key ManagerOpen Banking IamOct 18, 2026 Sep 26, 2025 N/A· v4 5.3 MEDIUM· v3 N/A· v2 A username enumeration vulnerability exists in multiple WSO2 products when Multi-Attribute Login is enabled. In this configuration, the system returns a distinct "User does not exist" error message to the login form, reg...Show more |