CWE-837 (Improper Enforcement of a Single, Unique Action) documents a weakness type used across vulnerability databases and security assessments. Use the sections below for definition, context, and mapped CVEs.
The product requires that an actor should only be able to perform an action once, or to have only one unique action, but the product does not enforce or improperly enforces this restriction.
| Kind | Name | Class | Prevalence | OS / CPE |
|---|---|---|---|---|
| language | — | Not Language-Specific | Undetermined | — |
| technology | — | Not Technology-Specific | Undetermined | — |
| technology | — | Web Based | Undetermined | — |
| technology | Web Server | — | Undetermined | — |
These CVEs are mapped to this weakness in this database and kept for traceability and search.
| CVE | Published | Summary |
|---|---|---|
| CVE-2026-42609 | 2026-05-11 | Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existin… |
| CVE-2026-44601 | 2026-05-07 | Tor before 0.4.9.7, when circuit queue memory pressure exists, can experience a client crash because of a double close of a circuit, aka TROVE-2026-009. |
| CVE-2025-62784 | 2025-10-27 | InventoryGui is a library for creating chest GUIs for Bukkit/Spigot plugins. Versions before 1.6.5 contain a vulnerability where any plugin using a GUI with the GuiStorageElement and allows taking out… |
| CVE-2025-62783 | 2025-10-27 | InventoryGui is a library for creating chest GUIs for Bukkit/Spigot plugins. Versions 1.6.1-SNAPSHOT and earlier contain a vulnerability where any plugin using the `GuiStorageElement can allow item d… |
| CVE-2025-62782 | 2025-10-27 | InventoryGui is a library for creating chest GUIs for Bukkit/Spigot plugins. Versions 1.6.3-SNAPSHOT and earlier contain a vulnerability where GUIs using GuiStorageElement can allow item duplication w… |
| CVE-2025-54315 | 2025-10-02 | The Matrix specification before 1.16 (i.e., with a room version before 12) lacks create event uniqueness. |
| CVE-2025-58135 | 2025-09-09 | Improper action enforcement in certain Zoom Workplace Clients for Windows may allow an unauthenticated user to conduct a disclosure of information via network access. |
| CVE-2024-11301 | 2025-03-20 | In lunary-ai/lunary before version 1.6.3, the application allows the creation of evaluators without enforcing a unique constraint on the combination of projectId and slug. This allows an attacker to o… |
| CVE-2024-11717 | 2025-01-02 | Tokens in CTFd used for account activation and password resetting can be used interchangeably for these operations. When used, they are sent to the server as a GET parameter and they are not single us… |
| CVE-2024-11716 | 2025-01-02 | While assignment of a user to a team (bracket) in CTFd should be possible only once, at the registration, a flaw in logic implementation allows an authenticated user to reset it's bracket and then pi… |
| CVE-2024-12123 | 2024-12-04 | A hidden field manipulation vulnerability was identified in Issuetrak version 17.1 that could be triggered by an authenticated user. When an authenticated user submits a ticket, the request can be i… |
| CVE-2024-4629 | 2024-09-03 | A vulnerability was found in Keycloak. This flaw allows attackers to bypass brute force protection by exploiting the timing of login attempts. By initiating multiple login requests simultaneously, att… |
| CVE-2023-6759 | 2023-12-13 | A vulnerability classified as problematic has been found in Thecosy IceCMS 2.0.1. This affects an unknown part of the file /WebResource/resource of the component Love Handler. The manipulation leads t… |
| CVE-2023-6467 | 2023-12-02 | A vulnerability was found in Thecosy IceCMS 2.0.1. It has been rated as problematic. This issue affects some unknown processing of the file /Websquare/likeClickComment/ of the component Comment Like H… |
| CVE-2023-6438 | 2023-11-30 | A vulnerability classified as problematic has been found in Thecosy IceCMS 2.0.1. Affected is an unknown function of the file /WebArticle/articles/ of the component Like Handler. The manipulation lead… |
| CVE-2023-5313 | 2023-09-30 | A vulnerability classified as problematic was found in phpkobo Ajax Poll Script 3.18. Affected by this vulnerability is an unknown functionality of the file ajax-poll.php of the component Poll Handler… |
| Date | Name | Version | Importance | Comment |
|---|---|---|---|---|
| 2012-05-11 | CWE Content Team | 2.2 | — | updated Observed_Examples |
| 2020-02-24 | CWE Content Team | 4.0 | — | updated Relationships |
| 2023-01-31 | CWE Content Team | 4.10 | — | updated Common_Consequences, Description |
| 2023-04-27 | CWE Content Team | 4.11 | — | updated Relationships |
| 2023-06-29 | CWE Content Team | 4.12 | — | updated Mapping_Notes |
| 2023-10-26 | CWE Content Team | 4.13 | — | updated Common_Consequences |
| 2025-12-11 | CWE Content Team | 4.19 | — | updated Applicable_Platforms, Time_of_Introduction, Weakness_Ordinalities |