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Common Weakness Enumeration

CWE-284

Discouraged

Improper Access Control

Abstraction: Pillar · Status: Incomplete

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

9947 vulnerabilities reference this CWE, most recent first.

CVE-2026-33318 (GCVE-0-2026-33318)

Vulnerability from cvelistv5 – Published: 2026-04-24 02:13 – Updated: 2026-04-25 01:44
VLAI
Title
Actual has Privilege Escalation via 'change-password' Endpoint on OpenID-Migrated Servers
Summary
Actual is a local-first personal finance tool. Prior to version 26.4.0, any authenticated user (including `BASIC` role) can escalate to `ADMIN` on servers migrated from password authentication to OpenID Connect. Three weaknesses combine: `POST /account/change-password` has no authorization check, allowing any session to overwrite the password hash; the inactive password `auth` row is never removed on migration; and the login endpoint accepts a client-supplied `loginMethod` that bypasses the server's active auth configuration. Together these allow an attacker to set a known password and authenticate as the anonymous admin account created during the multiuser migration. The three weaknesses form a single, sequential exploit chain — none produces privilege escalation on its own. Missing authorization on POST /change-password allows overwriting a password hash, but only matters if there is an orphaned row to target. Orphaned password row persisting after migration provides the target row, but is harmless without the ability to authenticate using it. Client-controlled loginMethod: "password" allows forcing password-based auth, but is useless without a known hash established by step 1. All three must be chained in sequence to achieve the impact. No single weakness independently results in privilege escalation. The single root cause is the missing authorization check on /change-password; the other two are preconditions that make it exploitable. Version 26.4.0 contains a fix.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-25 01:43 UTC
CWE
References
Impacted products
Vendor Product Version
actualbudget actual Affected: < 26.4.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-33316 (GCVE-0-2026-33316)

Vulnerability from cvelistv5 – Published: 2026-03-24 14:59 – Updated: 2026-03-26 13:08
VLAI
Title
Vikunja’s Improper Access Control Enables Bypass of Administrator-Imposed Account Disablement
Summary
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, a flaw in Vikunja’s password reset logic allows disabled users to regain access to their accounts. The `ResetPassword()` function sets the user’s status to `StatusActive` after a successful password reset without verifying whether the account was previously disabled. By requesting a reset token through `/api/v1/user/password/token` and completing the reset via `/api/v1/user/password/reset`, a disabled user can reactivate their account and bypass administrator-imposed account disablement. Version 2.2.0 patches the issue.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-26 13:07 UTC
CWE
Impacted products
Vendor Product Version
go-vikunja vikunja Affected: < 2.2.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-33309 (GCVE-0-2026-33309)

Vulnerability from cvelistv5 – Published: 2026-03-24 12:49 – Updated: 2026-03-25 03:55
VLAI
Title
Langflow has an Arbitrary File Write (RCE) via v2 API
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Versions 1.2.0 through 1.8.1 have a bypass of the patch for CVE-2025-68478 (External Control of File Name), leading to the root architectural issue within `LocalStorageService` remaining unresolved. Because the underlying storage layer lacks boundary containment checks, the system relies entirely on the HTTP-layer `ValidatedFileName` dependency. This defense-in-depth failure leaves the `POST /api/v2/files/` endpoint vulnerable to Arbitrary File Write. The multipart upload filename bypasses the path-parameter guard, allowing authenticated attackers to write files anywhere on the host system, leading to Remote Code Execution (RCE). Version 1.9.0 contains an updated fix.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-24 00:00 UTC
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
  • CWE-73 - External Control of File Name or Path
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-284 - Improper Access Control
References
Impacted products
Vendor Product Version
langflow-ai langflow Affected: >= 1.2.0, < 1.9.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-33212 (GCVE-0-2026-33212)

Vulnerability from cvelistv5 – Published: 2026-04-15 17:48 – Updated: 2026-04-15 18:09
VLAI
Title
Weblate: Improper access control for pending tasks in API
Summary
Weblate is a web based localization tool. In versions prior to 5.17, the tasks API didn't verify user access for pending tasks. This could expose logs of in-progress operations to users who don't have access to given scope. The attacker needs to brute-force the random UUID of the task, so exploiting this is unlikely with the default API rate limits. This issue has been fixed in version 5.17.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-15 18:08 UTC
CWE
  • CWE-284 - Improper Access Control
References
Impacted products
Vendor Product Version
WeblateOrg weblate Affected: < 5.17
Create a notification for this product.
Show details on NVD website

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CVE-2026-33109 (GCVE-0-2026-33109)

Vulnerability from cvelistv5 – Published: 2026-05-07 20:58 – Updated: 2026-08-10 15:12 Exclusively Hosted Service
VLAI
Title
Azure Managed Instance for Apache Cassandra Remote Code Execution Vulnerability
Summary
Improper access control in Azure Managed Instance for Apache Cassandra allows an authorized attacker to execute code over a network.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 00:00 UTC
CWE
  • CWE-284 - Improper Access Control
References
Impacted products
Vendor Product Version
Microsoft Azure Managed Instance for Apache Cassandra Affected: -
    cpe:2.3:a:microsoft:azure_managed_instance_for_apache_cassandra:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-05-07 14:00
Show details on NVD website

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CVE-2026-33103 (GCVE-0-2026-33103)

Vulnerability from cvelistv5 – Published: 2026-04-14 16:58 – Updated: 2026-08-14 16:31
VLAI
Title
Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability
Summary
Improper access control in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to disclose information locally.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-14 19:22 UTC
CWE
  • CWE-284 - Improper Access Control
References
Impacted products
Vendor Product Version
Microsoft Microsoft Dynamics 365 (on-premises) version 9.0 Affected: 9.0.0 , < 9.1.0044.0015 (custom)
    cpe:2.3:a:microsoft:dynamics_365:*:*:*:*:on-premises:*:*:*
Create a notification for this product.
Date Public
2026-04-14 14:00
Show details on NVD website

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CVE-2026-33062 (GCVE-0-2026-33062)

Vulnerability from cvelistv5 – Published: 2026-03-20 02:46 – Updated: 2026-03-21 02:57
VLAI
Title
free5GC NRF Discovery EncodeGroupId Function Panics on Malformed group-id-list Parameter
Summary
free5GC is an open source 5G core network. free5GC NRF prior to version 1.4.2 has an Improper Input Validation vulnerability leading to Denial of Service. All deployments of free5GC using the NRF discovery service are affected. The `EncodeGroupId` function attempts to access array indices [0], [1], [2] without validating the length of the split data. When the parameter contains insufficient separator characters, the code panics with "index out of range". A remote attacker can cause the NRF service to panic and crash by sending a crafted HTTP GET request with a malformed `group-id-list` parameter. This results in complete denial of service for the NRF discovery service. free5GC NRF version 1.4.2 fixes the issue. There is no direct workaround at the application level. The recommendation is to apply the provided patch or restrict access to the NRF API to trusted sources only.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-21 02:57 UTC
CWE
  • CWE-284 - Improper Access Control
Impacted products
Vendor Product Version
free5gc nrf Affected: < 1.4.2
Create a notification for this product.
Show details on NVD website

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CVE-2026-33031 (GCVE-0-2026-33031)

Vulnerability from cvelistv5 – Published: 2026-04-20 20:12 – Updated: 2026-04-21 13:35
VLAI
Title
Nginx-UI: Disabled users retain full API access through previously issued bearer tokens
Summary
Nginx UI is a web user interface for the Nginx web server. Prior to version 2.3.4, a user who was disabled by an administrator can use previously issued API tokens for up to the token lifetime. In practice, disabling a compromised account does not actually terminate that user’s access, so an attacker who already stole a JWT can continue reading and modifying protected resources after the account is marked disabled. Since tokens can be used to create new accounts, it is possible the disabled user to maintain the privilege. Version 2.3.4 patches the issue.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-21 13:35 UTC
CWE
References
Impacted products
Vendor Product Version
0xJacky nginx-ui Affected: < 2.3.4
Create a notification for this product.
Show details on NVD website

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CVE-2026-32995 (GCVE-0-2026-32995)

Vulnerability from cvelistv5 – Published: 2026-05-28 04:01 – Updated: 2026-05-28 13:13
VLAI
Summary
The Rocket.Chat DDP method autoTranslate.translateMessage in versions <8.5.0, <8.4.2, <8.3.4, <8.2.4, <8.1.5, <8.0.5, <7.13.8, and <7.10.12 accepts a client-supplied IMessage object and passes it directly to translateMessage() without checking Meteor.userId() or verifying room membership. Any authenticated DDP user can read the content of any message by ID from any room (private channels, DMs, E2EE rooms) by calling this method.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 13:13 UTC
CWE
  • CWE-284 - Improper Access Control - Generic
Impacted products
Vendor Product Version
Rocket.Chat Rocket.Chat Affected: 8.5.0 , < 8.5.0 (semver)
Affected: 8.4.0 , < 8.4.2 (semver)
Affected: 8.3.0 , < 8.3.4 (semver)
Affected: 8.2.0 , < 8.2.4 (semver)
Affected: 8.1.0 , < 8.1.5 (semver)
Affected: 8.0.0 , < 8.0.6 (semver)
Affected: 7.13.0 , < 7.13.8 (semver)
Affected: 7.10.0 , < 7.10.12 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-32994 (GCVE-0-2026-32994)

Vulnerability from cvelistv5 – Published: 2026-05-19 04:43 – Updated: 2026-05-19 12:36
VLAI
Summary
The /api/v1/autotranslate.translateMessage endpoint in versions <8.5.0, <8.4.2, <8.3.4, <8.2.4, <8.1.5, <8.0.6, <7.13.8, and <7.10.12 allows any authenticated user to retrieve the full content of any message from any room (private groups, direct messages, channels) by simply providing the target message ID. The endpoint fetches the message via Messages.findOneById(messageId) with no room access check (canAccessRoomIdAsync is never called), returning the complete IMessage object including message text, sender info, room ID, timestamps, and markdown content.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 12:36 UTC
CWE
  • CWE-284 - Improper Access Control - Generic
References
Impacted products
Vendor Product Version
Rocket.Chat Rocket.Chat Affected: 0 , < 8.5.0 (semver)
Affected: 0 , < 8.4.2 (semver)
Affected: 0 , < 8.3.4 (semver)
Affected: 0 , < 8.2.4 (semver)
Affected: 0 , < 8.1.5 (semver)
Affected: 0 , < 8.0.6 (semver)
Affected: 0 , < 7.13.8 (semver)
Affected: 0 , < 7.10.12 (semver)
Create a notification for this product.
Show details on NVD website

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Mitigation MIT-1
Architecture and Design Operation

Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.

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.
CAPEC-19: Embedding Scripts within Scripts

An adversary leverages the capability to execute their own script by embedding it within other scripts that the target software is likely to execute due to programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts.

CAPEC-441: Malicious Logic Insertion

An adversary installs or adds malicious logic (also known as malware) into a seemingly benign component of a fielded system. This logic is often hidden from the user of the system and works behind the scenes to achieve negative impacts. With the proliferation of mass digital storage and inexpensive multimedia devices, Bluetooth and 802.11 support, new attack vectors for spreading malware are emerging for things we once thought of as innocuous greeting cards, picture frames, or digital projectors. This pattern of attack focuses on systems already fielded and used in operation as opposed to systems and their components that are still under development and part of the supply chain.

CAPEC-478: Modification of Windows Service Configuration

An adversary exploits a weakness in access control to modify the execution parameters of a Windows service. The goal of this attack is to execute a malicious binary in place of an existing service.

CAPEC-479: Malicious Root Certificate

An adversary exploits a weakness in authorization and installs a new root certificate on a compromised system. Certificates are commonly used for establishing secure TLS/SSL communications within a web browser. When a user attempts to browse a website that presents a certificate that is not trusted an error message will be displayed to warn the user of the security risk. Depending on the security settings, the browser may not allow the user to establish a connection to the website. Adversaries have used this technique to avoid security warnings prompting users when compromised systems connect over HTTPS to adversary controlled web servers that spoof legitimate websites in order to collect login credentials.

CAPEC-502: Intent Spoof

An adversary, through a previously installed malicious application, issues an intent directed toward a specific trusted application's component in an attempt to achieve a variety of different objectives including modification of data, information disclosure, and data injection. Components that have been unintentionally exported and made public are subject to this type of an attack. If the component trusts the intent's action without verififcation, then the target application performs the functionality at the adversary's request, helping the adversary achieve the desired negative technical impact.

CAPEC-503: WebView Exposure

An adversary, through a malicious web page, accesses application specific functionality by leveraging interfaces registered through WebView's addJavascriptInterface API. Once an interface is registered to WebView through addJavascriptInterface, it becomes global and all pages loaded in the WebView can call this interface.

CAPEC-536: Data Injected During Configuration

An attacker with access to data files and processes on a victim's system injects malicious data into critical operational data during configuration or recalibration, causing the victim's system to perform in a suboptimal manner that benefits the adversary.

CAPEC-546: Incomplete Data Deletion in a Multi-Tenant Environment

An adversary obtains unauthorized information due to insecure or incomplete data deletion in a multi-tenant environment. If a cloud provider fails to completely delete storage and data from former cloud tenants' systems/resources, once these resources are allocated to new, potentially malicious tenants, the latter can probe the provided resources for sensitive information still there.

CAPEC-550: Install New Service

When an operating system starts, it also starts programs called services or daemons. Adversaries may install a new service which will be executed at startup (on a Windows system, by modifying the registry). The service name may be disguised by using a name from a related operating system or benign software. Services are usually run with elevated privileges.

CAPEC-551: Modify Existing Service

When an operating system starts, it also starts programs called services or daemons. Modifying existing services may break existing services or may enable services that are disabled/not commonly used.

CAPEC-552: Install Rootkit

An adversary exploits a weakness in authentication to install malware that alters the functionality and information provide by targeted operating system API calls. Often referred to as rootkits, it is often used to hide the presence of programs, files, network connections, services, drivers, and other system components.

CAPEC-556: Replace File Extension Handlers

When a file is opened, its file handler is checked to determine which program opens the file. File handlers are configuration properties of many operating systems. Applications can modify the file handler for a given file extension to call an arbitrary program when a file with the given extension is opened.

CAPEC-558: Replace Trusted Executable

An adversary exploits weaknesses in privilege management or access control to replace a trusted executable with a malicious version and enable the execution of malware when that trusted executable is called.

CAPEC-562: Modify Shared File

An adversary manipulates the files in a shared location by adding malicious programs, scripts, or exploit code to valid content. Once a user opens the shared content, the tainted content is executed.

CAPEC-563: Add Malicious File to Shared Webroot

An adversaries may add malicious content to a website through the open file share and then browse to that content with a web browser to cause the server to execute the content. The malicious content will typically run under the context and permissions of the web server process, often resulting in local system or administrative privileges depending on how the web server is configured.

CAPEC-564: Run Software at Logon

Operating system allows logon scripts to be run whenever a specific user or users logon to a system. If adversaries can access these scripts, they may insert additional code into the logon script. This code can allow them to maintain persistence or move laterally within an enclave because it is executed every time the affected user or users logon to a computer. Modifying logon scripts can effectively bypass workstation and enclave firewalls. Depending on the access configuration of the logon scripts, either local credentials or a remote administrative account may be necessary.

CAPEC-578: Disable Security Software

An adversary exploits a weakness in access control to disable security tools so that detection does not occur. This can take the form of killing processes, deleting registry keys so that tools do not start at run time, deleting log files, or other methods.