Common Weakness Enumeration

CWE-203

Allowed

Observable Discrepancy

Abstraction: Base · Status: Incomplete

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

204 vulnerabilities reference this CWE, most recent first.

CVE-2026-56098 (GCVE-0-2026-56098)

Vulnerability from cvelistv5 – Published: 2026-10-01 17:14 – Updated: 2026-10-07 06:12
VLAI
Title
Rubygem-katello: improper authorization logic allows resource enumeration
Summary
A flaw was found in rubygem-katello. The RegistryProxiesController in Katello contains an authorization bypass vulnerability due to an execution fall-through in the registry_authorize filter. While the application identifies unauthorized requests and triggers an error response via the unauthorized method, it fails to halt the execution of the current code path (missing return statement). This failure in the control flow allows the application to proceed into subsequent business logic and database validation filters. Consequently, the application reveals its internal state through differential responses, allowing an unprivileged attacker to enumerate valid Users, Organizations, and Products across the entire instance.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 18:02 UTC
CWE
Assigner
redhat CNA
References
Impacted products
Vendor Product Version
Red Hat Red Hat Satellite 6.16 for RHEL 8 Unaffected: 0:4.14.0.23-1.el8sat , < * (rpm)
    cpe:/a:redhat:satellite:6.16::el8
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    cpe:/a:redhat:satellite_utils:6.16::el8
    cpe:/a:redhat:satellite_utils:6.16::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6.16 for RHEL 9 Unaffected: 0:4.14.0.23-1.el9sat , < * (rpm)
    cpe:/a:redhat:satellite:6.16::el8
    cpe:/a:redhat:satellite:6.16::el9
    cpe:/a:redhat:satellite_capsule:6.16::el8
    cpe:/a:redhat:satellite_capsule:6.16::el9
    cpe:/a:redhat:satellite_utils:6.16::el8
    cpe:/a:redhat:satellite_utils:6.16::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6.17 for RHEL 9 Unaffected: 0:4.16.0.20-1.el9sat , < * (rpm)
    cpe:/a:redhat:satellite:6.17::el9
    cpe:/a:redhat:satellite_capsule:6.17::el9
    cpe:/a:redhat:satellite_utils:6.17::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6.18 for RHEL 9 Unaffected: 0:4.18.0.24-1.el9sat , < * (rpm)
    cpe:/a:redhat:satellite:6.18::el9
    cpe:/a:redhat:satellite_capsule:6.18::el9
    cpe:/a:redhat:satellite_utils:6.18::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6.19 for RHEL 9 Unaffected: 0:4.20.0.11-1.el9sat , < * (rpm)
    cpe:/a:redhat:satellite:6.19::el9
    cpe:/a:redhat:satellite_capsule:6.19::el9
    cpe:/a:redhat:satellite_utils:6.19::el9
Create a notification for this product.
Red Hat Red Hat Satellite 6     cpe:/a:redhat:satellite:6
Create a notification for this product.
Date Public
2026-10-01 12:20
Show details on NVD website

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CVE-2026-55555 (GCVE-0-2026-55555)

Vulnerability from cvelistv5 – Published: 2026-07-28 19:23 – Updated: 2026-07-28 19:43
VLAI
Title
Dompdf: File existence oracle via font-face stylesheet declaration
Summary
Dompdf is an HTML to PDF converter for PHP. Versions 3.15 and prior are vulnerable to a File Existence Oracle attack through the manipulation of the CSS @font-face directive. By providing malicious HTML that references local files via the file:// protocol repeatedly, an attacker can trigger PHP memory exhaustion. Because Dompdf behaves differently depending on whether a referenced local file exists (an existing file is processed repeatedly until it triggers an "Allowed memory size exhausted" crash, whereas a missing file fails fast or is ignored and never hits the memory limit), an attacker can use this observable discrepancy as an oracle to enumerate sensitive files on the server regardless of CHROOT restrictions. Exploitation requires the attacker to supply unrestricted or unsanitized HTML in a request that permits large data, plus a configuration where Dompdf's memory limit is low enough to be exhausted (with  $_dompdf_show_warnings=true  making the overflow easier to reach). This issue has been fixed in version 3.16.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 19:43 UTC
CWE
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
dompdf dompdf Affected: < 3.1.6
Create a notification for this product.
Show details on NVD website

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CVE-2026-55227 (GCVE-0-2026-55227)

Vulnerability from cvelistv5 – Published: 2026-08-26 20:10 – Updated: 2026-08-27 13:51
VLAI
Title
Observable object existence disclosure in private Weblate projects via globally scoped object lookups
Summary
Weblate is a web-based localization tool. In versions prior to 2026.7, several endpoints look up objects in a globally scoped manner rather than restricting the lookup to projects the user can access, so they return HTTP 403 (Forbidden) instead of 404 (Not Found) when a user requests an object they are not authorized to see. This difference lets unauthorized users infer whether a given object exists in a private Weblate project. The issue has been fixed in version 2026.7.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:51 UTC
CWE
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
WeblateOrg weblate Affected: < 2026.7
Create a notification for this product.
Show details on NVD website

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CVE-2026-53933 (GCVE-0-2026-53933)

Vulnerability from cvelistv5 – Published: 2026-09-08 22:00 – Updated: 2026-09-09 13:15
VLAI
Title
Maravel-Framework Vulnerable to Side-Channel Information Disclosure (Error Oracle) via Dynamic Route Fuzzing
Summary
Maravel, a PHP framework oriented towards dependency injection, prior to version 10.73.1 has a side-channel information disclosure issue. When a route was compiled with dynamic placeholders (e.g., `/api/v1/users/{id}`), the raw string placeholder key was mistakenly registered into the flat static route checklist. An attacker scanning endpoints could intentionally pass the literal template syntax (e.g., `GET /api/v1/users/{id}`) to force an unexpected match against the static map. Because the dynamic tree engine was bypassed, no arguments were captured. This forced modern PHP 8+ versions to throw a native `ArgumentCountError`, resulting in a 500 Internal Server Error instead of a uniform 404 Not Found. By tracking which fuzz patterns exploded into a 500 error, a malicious actor could programmatically profile and map out internal route parameter names and controller schemas. Version 10.73.1 contains a patch. As a workaround, mitigate this side-channel leak by implementing a defensive check in a global middleware. This will reject any literal brace patterns before they reach the router engine.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 13:14 UTC
CWE
Assigner
GitHub_M CNA
Impacted products
Show details on NVD website

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CVE-2026-47379 (GCVE-0-2026-47379)

Vulnerability from cvelistv5 – Published: 2026-06-23 20:17 – Updated: 2026-06-24 13:56
VLAI
Title
NocoDB: Plaintext Password Comparison in Shared Views
Summary
NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, the shared-view password check fell back to strict-equality (===) comparison for legacy plaintext passwords, leaking the password's length and per-character prefix through response timing. This vulnerability is fixed in 2026.05.1.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-24 13:55 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-203 - Observable Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
nocodb nocodb Affected: < 2026.05.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-45410 (GCVE-0-2026-45410)

Vulnerability from cvelistv5 – Published: 2026-05-28 21:23 – Updated: 2026-05-29 14:46
VLAI
Title
Time-based user enumeration in TREK authentication endpoint
Summary
TREK is a collaborative travel planner. Prior to 3.0.18, early return on missing user during login flow allowed an attacker to enumerate valid user accounts via response timing discrepancy. When an email address existed in the database, the backend performed a bcrypt password comparison before returning a 401 Unauthorized, adding ~370 ms of latency. When the email did not exist, the backend returned immediately (~10 ms). This ~14× timing difference could be detected without any difference in HTTP status codes or response bodies. This vulnerability is fixed in 3.0.18.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-29 14:46 UTC
CWE
  • CWE-203 - Observable Discrepancy
  • CWE-208 - Observable Timing Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
mauriceboe TREK Affected: < 3.0.18
Create a notification for this product.
Show details on NVD website

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CVE-2026-45294 (GCVE-0-2026-45294)

Vulnerability from cvelistv5 – Published: 2026-05-29 19:52 – Updated: 2026-06-02 01:56
VLAI
Title
FreeScout: User Account Enumeration via Password Reset Response Differentiation
Summary
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to 1.8.219, the password reset endpoint returns visually distinct responses depending on whether the submitted email address belongs to an existing user account, allowing unauthenticated attackers to enumerate valid helpdesk agent email addresses. This vulnerability is fixed in 1.8.219.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 01:55 UTC
CWE
  • CWE-203 - Observable Discrepancy
  • CWE-204 - Observable Response Discrepancy
Assigner
GitHub_M CNA
References
Impacted products
Show details on NVD website

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CVE-2026-44332 (GCVE-0-2026-44332)

Vulnerability from cvelistv5 – Published: 2026-07-08 19:32 – Updated: 2026-07-09 14:33
VLAI
Title
Fiber: Username Enumeration via Timing Oracle in BasicAuth Default Authorizer
Summary
Fiber is an Express inspired web framework written in Go. Prior to 3.3.0, the default Authorizer function in the BasicAuth middleware in middleware/basicauth/config.go uses short-circuit evaluation that skips password hash comparison for non-existent usernames, enabling reliable remote username enumeration through response timing differences. This issue is fixed in version 3.3.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 14:33 UTC
CWE
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
gofiber fiber Affected: < 3.3.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-44263 (GCVE-0-2026-44263)

Vulnerability from cvelistv5 – Published: 2026-05-07 13:42 – Updated: 2026-05-07 15:02
VLAI
Title
Weblate: Private Translation Enumeration via Screenshot API
Summary
Weblate is a web based localization tool. Prior to version 5.17.1, the screenshots, tasks, and component link API allowed for the enumeration of translations in a project inaccessible to the user. This issue has been patched in version 5.17.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-07 14:59 UTC
CWE
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
WeblateOrg weblate Affected: < 5.17.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-33429 (GCVE-0-2026-33429)

Vulnerability from cvelistv5 – Published: 2026-03-24 18:16 – Updated: 2026-03-25 13:34
VLAI
Title
Parse Server: Protected field change detection oracle via LiveQuery watch parameter
Summary
Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to versions 8.6.54 and 9.6.0-alpha.43, an attacker can subscribe to LiveQuery with a watch parameter targeting a protected field. Although the protected field value is properly stripped from event payloads, the presence or absence of update events reveals whether the protected field changed, creating a binary oracle. For boolean protected fields, the timing of change events is equivalent to knowing the field value. This issue has been patched in versions 8.6.54 and 9.6.0-alpha.43.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-25 13:33 UTC
CWE
Assigner
GitHub_M CNA
Impacted products
Vendor Product Version
parse-community parse-server Affected: < 8.6.54
Affected: >= 9.0.0, < 9.6.0-alpha.43
Create a notification for this product.
Show details on NVD website

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Mitigation MIT-46
Architecture and Design

Strategy: Separation of Privilege

  • Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
Mitigation MIT-39
Implementation
  • Ensure that error messages only contain minimal details that are useful to the intended audience and no one else. The messages need to strike the balance between being too cryptic (which can confuse users) or being too detailed (which may reveal more than intended). The messages should not reveal the methods that were used to determine the error. Attackers can use detailed information to refine or optimize their original attack, thereby increasing their chances of success.
  • If errors must be captured in some detail, record them in log messages, but consider what could occur if the log messages can be viewed by attackers. Highly sensitive information such as passwords should never be saved to log files.
  • Avoid inconsistent messaging that might accidentally tip off an attacker about internal state, such as whether a user account exists or not.
CAPEC-189: Black Box Reverse Engineering

An adversary discovers the structure, function, and composition of a type of computer software through black box analysis techniques. 'Black Box' methods involve interacting with the software indirectly, in the absence of direct access to the executable object. Such analysis typically involves interacting with the software at the boundaries of where the software interfaces with a larger execution environment, such as input-output vectors, libraries, or APIs. Black Box Reverse Engineering also refers to gathering physical side effects of a hardware device, such as electromagnetic radiation or sounds.