Common Weakness Enumeration
CWE-837
Weakness AllowedImproper Enforcement of a Single, Unique Action
Abstraction: Base · Status: Incomplete
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 incorrectly enforces this restriction.
Mapping guidance
This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.
Modes of introduction
Implementation
Content history
Submission: CWE Content Team
· MITRE
· 2011-03-24
· CWE 1.12
Modification: CWE Content Team
· MITRE
· 2012-05-11
· CWE 2.2
updated Observed_Examples
Modification: CWE Content Team
· MITRE
· 2020-02-24
· CWE 4.0
updated Relationships
Modification: CWE Content Team
· MITRE
· 2023-01-31
· CWE 4.10
updated Common_Consequences, Description
Modification: CWE Content Team
· MITRE
· 2023-04-27
· CWE 4.11
updated Relationships
Modification: CWE Content Team
· MITRE
· 2023-06-29
· CWE 4.12
updated Mapping_Notes
Modification: CWE Content Team
· MITRE
· 2023-10-26
· CWE 4.13
updated Common_Consequences
Modification: CWE Content Team
· MITRE
· 2025-12-11
· CWE 4.19
updated Applicable_Platforms, Time_of_Introduction, Weakness_Ordinalities
Modification: CWE Content Team
· MITRE
· 2026-10-28
· CWE 5.0
updated Background_Details, Demonstrative_Examples, Description
40 vulnerabilities reference this CWE, most recent first.
CVE-2026-112285 (GCVE-0-2026-112285)
Vulnerability from cvelistv5 – Published: 2026-10-19 13:55 – Updated: 2026-10-19 16:34
VLAI
EPSS
VEX
Title
Thelia before 3.1.5 and 3.2.4 Coupon Usage Limit Bypass via Pay-Later Orders
Summary
Thelia before 3.1.5 and 3.2.x before 3.2.4 contains a business logic vulnerability that allows authenticated customers to bypass coupon usage limits because usage is counted only when orders become paid. Attackers can place multiple pay-later orders while a usage remains, or cancel paid orders to inflate max_usage, gaining unlimited discounts.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 15:36 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/thelia/thelia/security/advisor… | vendor-advisory |
| https://github.com/thelia/thelia/commit/1c3ed9c7a… | patch |
| https://github.com/thelia/thelia/commit/edb7078bf… | patch |
| https://github.com/thelia/thelia/blob/3.2.3/core/… | technical-description |
| https://github.com/thelia/thelia/blob/3.2.3/core/… | technical-description |
| https://github.com/thelia/thelia/blob/3.2.3/core/… | technical-description |
| https://github.com/thelia/thelia/releases/tag/3.1.5 | release-notes |
| https://github.com/thelia/thelia/releases/tag/3.2.4 | release-notes |
| https://www.vulncheck.com/advisories/thelia-befor… | third-party-advisory |
Impacted products
Date Public
2026-10-18 16:11
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CVE-2026-105850 (GCVE-0-2026-105850)
Vulnerability from cvelistv5 – Published: 2026-10-06 16:11 – Updated: 2026-10-06 16:28
VLAI
EPSS
VEX
Title
Payload: Order confirmation validation issue in Payload Ecommerce
Summary
Payload is a free and open source headless content management system. In @payloadcms/plugin-ecommerce versions before 3.90.0 and canary versions before 4.0.0-canary.34, use of the Stripe payment adapter can allow a Stripe order confirmation to be processed more than once under certain conditions. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-06 16:28 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/payloadcms/payload/security/ad… | x_refsource_CONFIRM |
| https://github.com/payloadcms/payload/commit/6c0c… | x_refsource_MISC |
| https://github.com/payloadcms/payload/releases/ta… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| payloadcms | payload |
Affected:
< 3.90.0
Affected: >= 4.0.0-canary.0, < 4.0.0-canary.34 |
|
| @payloadcms | plugin-ecommerce |
Affected:
< 3.90.0
Affected: >= 4.0.0-canary.0, < 4.0.0-canary.34 |
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CVE-2026-86198 (GCVE-0-2026-86198)
Vulnerability from cvelistv5 – Published: 2026-09-09 13:32 – Updated: 2026-09-10 14:58
VLAI
EPSS
VEX
Title
PocketMine-MP before 5.44.2 Denial of Service via ResourcePackClientResponsePacket
Summary
PocketMine-MP versions before 5.44.2 fail to properly validate multiple ResourcePackClientResponsePacket packets with STATUS_COMPLETED status during resource pack handling. Malicious clients can send batches of these packets to repeatedly trigger pre-spawn progression, creating duplicate Player objects and amplifying memory consumption and network traffic.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:18 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/pmmp/PocketMine-MP/security/ad… | vendor-advisory |
| https://github.com/pmmp/PocketMine-MP/commit/7a27… | patch |
| https://www.vulncheck.com/advisories/pocketmine-m… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| pmmp | PocketMine-MP |
Affected:
0 , < 5.44.2
(semver)
Unaffected: 5.44.2 (semver) |
Date Public
2026-06-24 00:00
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CVE-2026-45734 (GCVE-0-2026-45734)
Vulnerability from cvelistv5 – Published: 2026-08-18 15:51 – Updated: 2026-08-19 14:43
VLAI
EPSS
VEX
Title
MyBB: Default CAPTCHA missing invalidation
Summary
MyBB is free and open source forum software. Prior to 1.8.40, the built-in CAPTCHA does not consistently enforce single-use semantics, allowing remote attackers to bypass CAPTCHA controls through challenge replay. The successful validation paths in contact.php, member.php?action=do_resendactivation, member.php?action=do_lostpw, member.php?action=do_emailuser, and sendthread.php?action=do_sendtofriend do not call captcha::invalidate_captcha() for the MyBB Default CAPTCHA selected by the captchaimage setting. A valid response can therefore be reused until a non-vulnerable endpoint invalidates it, an incorrect response is submitted, or the challenge expires. This issue is fixed in version 1.8.40.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 14:43 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/mybb/mybb/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/mybb/mybb/commit/c2ed54f9259b9… | x_refsource_MISC |
| https://github.com/mybb/mybb/releases/tag/mybb_1840 | x_refsource_MISC |
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CVE-2026-44601 (GCVE-0-2026-44601)
Vulnerability from cvelistv5 – Published: 2026-05-07 03:09 – Updated: 2026-05-07 14:58
VLAI
EPSS
VEX
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-07 13:56 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| torproject | Tor |
Affected:
0 , < 0.4.9.7
(custom)
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* |
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CVE-2026-42609 (GCVE-0-2026-42609)
Vulnerability from cvelistv5 – Published: 2026-05-11 15:03 – Updated: 2026-05-14 17:56
VLAI
EPSS
VEX
Title
Grav: Administrative Account Disruption and Privilege De-escalation via User Overwrite Logic
Summary
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 existing accounts, including the primary administrator. By creating a new user with a username that already exists, the system updates the existing account's metadata and permissions instead of rejecting the request. This leads to a Denial of Service (DoS) on administrative functions and Privilege De-escalation of the root account. This vulnerability is fixed in 2.0.0-beta.2.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 17:56 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/getgrav/grav/security/advisori… | x_refsource_CONFIRM |
| https://github.com/getgrav/grav/commit/5a12f9be83… | x_refsource_MISC |
| https://github.com/getgrav/grav/commit/c66dfeb5ff… | x_refsource_MISC |
| https://github.com/getgrav/grav/commit/d904efc33e… | x_refsource_MISC |
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CVE-2025-62784 (GCVE-0-2025-62784)
Vulnerability from cvelistv5 – Published: 2025-10-27 20:59 – Updated: 2025-10-28 14:32
VLAI
EPSS
VEX
Title
InventoryGui allows item duplication in GUIs which use GuiStorageElement
Summary
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 items out of that element can allow item duplication when the experimental Bundle item feature is enabled on the server. The vulnerability is resolved in version 1.6.5.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-28 14:29 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Phoenix616/InventoryGui/securi… | x_refsource_CONFIRM |
| https://github.com/Phoenix616/InventoryGui/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Phoenix616 | InventoryGui |
Affected:
< 1.6.5
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CVE-2025-62783 (GCVE-0-2025-62783)
Vulnerability from cvelistv5 – Published: 2025-10-27 20:54 – Updated: 2025-10-28 14:32
VLAI
EPSS
VEX
Title
InventoryGui affected by item duplication in GUIs which use GuiStorageElement
Summary
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 duplication when the experimental Bundle item feature is enabled on the server. The vulnerability is resolved in version 1.6.2-SNAPSHOT.
Severity
5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-28 14:31 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Phoenix616/InventoryGui/securi… | x_refsource_CONFIRM |
| https://github.com/Phoenix616/InventoryGui/issues/48 | x_refsource_MISC |
| https://github.com/Phoenix616/InventoryGui/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Phoenix616 | InventoryGui |
Affected:
< 1.6.2-SNAPSHOT
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CVE-2025-62782 (GCVE-0-2025-62782)
Vulnerability from cvelistv5 – Published: 2025-10-27 20:50 – Updated: 2025-10-28 14:33
VLAI
EPSS
VEX
Title
InventoryGUI vulnerable to item duplication via Bundle items when using GuiStorageElement
Summary
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 when the experimental Bundle item feature is enabled on the server. The vulnerability is resolved in version 1.6.4-SNAPSHOT.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-28 14:32 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/Phoenix616/InventoryGui/securi… | x_refsource_CONFIRM |
| https://github.com/Phoenix616/InventoryGui/issues/51 | x_refsource_MISC |
| https://github.com/Phoenix616/InventoryGui/commit… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Phoenix616 | InventoryGui |
Affected:
< 1.6.4-SNAPSHOT
|
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CVE-2025-58135 (GCVE-0-2025-58135)
Vulnerability from cvelistv5 – Published: 2025-09-09 21:45 – Updated: 2025-09-10 19:33
VLAI
EPSS
VEX
Title
Zoom Workplace Clients for Windows - Improper Action Enforcement
Summary
Improper action enforcement in certain Zoom Workplace Clients for Windows may allow an unauthenticated user to conduct a disclosure of information via network access.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-10 19:32 UTC
CWE
- CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zoom Communications, Inc | Zoom Workplace Clients for Windows |
Affected:
0 , < see references
(custom)
|
Date Public
2025-09-09 12:01
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.