VYPR

CWE-203

Observable Discrepancy

BaseIncomplete

Description

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.

Hierarchy (View 1000)

Related attack patterns (CAPEC)

CAPEC-189

CVEs mapped to this weakness (762)

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  • CVE-2024-30257LowApr 18, 2024
    risk 0.25cvss 3.9epss 0.00

    1Panel is an open source Linux server operation and maintenance management panel. The password verification in the source code uses the != symbol instead hmac.Equal. This may lead to a timing attack vulnerability. This vulnerability is fixed in 1.10.3-lts.

  • CVE-2020-25082LowAug 10, 2021
    risk 0.25cvss 3.8epss 0.00

    An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.

  • CVE-2025-13736LowAug 6, 2026
    risk 0.24cvss 3.7epss 0.00

    When Multi-Attribute Login is enabled, the login interface fails to consistently mask the existence of user accounts. For valid users, the server resolves and displays their canonical username, while for non-existent users, it echoes the original input. This occurs regardless of…

  • CVE-2026-8242LowMay 10, 2026
    risk 0.24cvss 3.7epss 0.00

    A vulnerability was found in Industrial Application Software IAS Canias ERP 8.03. The impacted element is the function doAction of the component Login RMI Interface. Performing a manipulation results in observable response discrepancy. The attack is possible to be carried out…

  • CVE-2025-67806LowApr 1, 2026
    risk 0.24cvss 3.7epss 0.00

    The login mechanism of Sage DPW 2021_06_004 displays distinct responses for valid and invalid usernames, allowing enumeration of existing accounts in versions before 2021_06_000. On-premise administrators can toggle this behavior in newer versions.

  • CVE-2026-3580MedMar 19, 2026
    risk 0.24cvss 4.7epss 0.00

    In wolfSSL 5.8.4, constant-time masking logic in sp_256_get_entry_256_9 is optimized into conditional branches (bnez) by GCC when targeting RISC-V RV32I with -O3. This transformation breaks the side-channel resistance of ECC scalar multiplication, potentially allowing a local…

  • CVE-2026-4045LowMar 12, 2026
    risk 0.24cvss 3.7epss 0.00

    A flaw has been found in projectsend up to r1945. This impacts an unknown function of the file includes/Classes/Auth.php. Executing a manipulation of the argument ldap_email can lead to observable response discrepancy. The attack can be executed remotely. A high complexity level…

  • CVE-2025-11443LowOct 8, 2025
    risk 0.24cvss 3.7epss 0.01

    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 through discrepancy. It is possible to initiate the attack…

  • CVE-2025-9109LowAug 18, 2025
    risk 0.24cvss 3.7epss 0.00

    A security flaw has been discovered in Portabilis i-Diario up to 1.5.0. Affected by this vulnerability is an unknown functionality of the file /password/email of the component Password Recovery Endpoint. The manipulation results in observable response discrepancy. It is possible…

  • CVE-2025-6011LowAug 1, 2025
    risk 0.24cvss 3.7epss 0.00

    A timing side channel in Vault and Vault Enterprise’s (“Vault”) userpass auth method allowed an attacker to distinguish between existing and non-existing users, and potentially enumerate valid usernames for Vault’s Userpass auth method. Fixed in Vault Community Edition…

  • CVE-2024-41760LowMar 11, 2025
    risk 0.24cvss 3.7epss 0.00

    IBM Common Cryptographic Architecture 7.0.0 through 7.5.51 could allow an attacker to obtain sensitive information due to a timing attack during certain RSA operations.

  • CVE-2025-24023LowMar 3, 2025
    risk 0.24cvss 3.7epss 0.00

    Flask-AppBuilder is an application development framework. Prior to 4.5.3, Flask-AppBuilder allows unauthenticated users to enumerate existing usernames by timing the response time from the server when brute forcing requests to login. This vulnerability is fixed in 4.5.3.

  • CVE-2024-42174LowJan 11, 2025
    risk 0.24cvss 3.7epss 0.00

    HCL MyXalytics is affected by username enumeration vulnerability. This allows a malicious user to perform enumeration of application users, and therefore compile a list of valid usernames.

  • CVE-2024-13198LowJan 9, 2025
    risk 0.24cvss 3.7epss 0.01

    A vulnerability classified as problematic has been found in langhsu Mblog Blog System 3.5.0. Affected is an unknown function of the file /login. The manipulation leads to observable response discrepancy. It is possible to launch the attack remotely. The complexity of an attack…

  • CVE-2024-13028LowDec 29, 2024
    risk 0.24cvss 3.7epss 0.01

    A vulnerability, which was classified as problematic, has been found in Antabot White-Jotter up to 0.2.2. This issue affects some unknown processing of the file /login. The manipulation of the argument username leads to observable response discrepancy. The attack may be…

  • CVE-2024-12663LowDec 16, 2024
    risk 0.24cvss 3.7epss 0.00

    A vulnerability classified as problematic was found in funnyzpc Mee-Admin up to 1.6. This vulnerability affects unknown code of the file /mee/login of the component Login. The manipulation of the argument username leads to observable response discrepancy. The attack can be…

  • CVE-2024-21210LowOct 15, 2024
    risk 0.24cvss 3.7epss 0.01

    Vulnerability in Oracle Java SE (component: Hotspot). Supported versions that are affected are Oracle Java SE: 8u421, 8u421-perf, 11.0.24, 17.0.12, 21.0.4 and 23. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to…

  • CVE-2024-21208LowOct 15, 2024
    risk 0.24cvss 3.7epss 0.01

    Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u421, 8u421-perf, 11.0.24, 17.0.12, 21.0.4, 23; Oracle GraalVM for JDK:…

  • CVE-2024-47869LowOct 10, 2024
    risk 0.24cvss 3.7epss 0.00

    Gradio is an open-source Python package designed for quick prototyping. This vulnerability involves a **timing attack** in the way Gradio compares hashes for the `analytics_dashboard` function. Since the comparison is not done in constant time, an attacker could exploit this by…

  • CVE-2023-36325LowOct 9, 2024
    risk 0.24cvss 3.7epss 0.01

    i2p before 2.3.0 (Java) allows de-anonymizing the public IPv4 and IPv6 addresses of i2p hidden services (aka eepsites) via a correlation attack across the IPv4 and IPv6 addresses that occurs when a tunneled, replayed message has a behavior discrepancy (it may be dropped, or may…