Common Weakness Enumeration
CWE-1284
AllowedImproper Validation of Specified Quantity in Input
Abstraction: Base · Status: Incomplete
The product receives input that is expected to specify a quantity (such as size or length), but it does not validate or incorrectly validates that the quantity has the required properties.
493 vulnerabilities reference this CWE, most recent first.
CVE-2026-26934 (GCVE-0-2026-26934)
Vulnerability from cvelistv5 – Published: 2026-02-26 17:03 – Updated: 2026-02-26 18:28
VLAI
EPSS
VEX
Title
Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service
Summary
Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
Impacted products
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CVE-2026-25863 (GCVE-0-2026-25863)
Vulnerability from cvelistv5 – Published: 2026-05-04 18:29 – Updated: 2026-05-25 23:41 X_Open Source
VLAI
EPSS
VEX
Title
Conditional Fields for Contact Form 7 < 2.7.3 DoS via Uncontrolled Resource Consumption
Summary
Conditional Fields for Contact Form 7 WordPress plugin through version 2.7.2 contains an uncontrolled resource consumption vulnerability in the Wpcf7cfMailParser class where the hide_hidden_mail_fields_regex_callback() method reads an iteration count directly from user-supplied POST parameters without validation or upper bound enforcement. Unauthenticated attackers can supply an arbitrarily large integer value through the REST API endpoint to cause unbounded loop execution with multiple preg_replace() operations, exhausting server memory and crashing the PHP process.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://wordpress.org/plugins/cf7-conditional-fie… | release-notespatch |
| https://www.vulncheck.com/advisories/conditional-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Jules Colle | Conditional Fields for Contact Form 7 |
Affected:
0 , < 2.7.3
(semver)
|
Date Public
2026-05-03 00:00
Credits
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CVE-2026-25345 (GCVE-0-2026-25345)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:14 – Updated: 2026-04-28 16:14
VLAI
EPSS
VEX
Title
WordPress SimpLy Gallery plugin <= 3.3.2 - Arbitrary Code Execution vulnerability
Summary
Improper Validation of Specified Quantity in Input vulnerability in GalleryCreator SimpLy Gallery simply-gallery-block allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects SimpLy Gallery: from n/a through <= 3.3.2.
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/Wordpress/Plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GalleryCreator | SimpLy Gallery |
Affected:
0 , ≤ 3.3.2
(custom)
|
Date Public
2026-04-22 14:18
Credits
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CVE-2026-21485 (GCVE-0-2026-21485)
Vulnerability from cvelistv5 – Published: 2026-01-06 03:17 – Updated: 2026-01-06 18:56
VLAI
EPSS
VEX
Title
iccDEV Undefined Behavior (UB) and Out of Memory in CIccProfile::LoadTag()
Summary
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Versions 2.3.1.1 and below are prone to have Undefined Behavior (UB) and Out of Memory errors. This issue is fixed in version 2.3.1.2.
Severity
8.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/InternationalColorConsortium/i… | x_refsource_CONFIRM |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
| https://github.com/InternationalColorConsortium/i… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| InternationalColorConsortium | iccDEV |
Affected:
< 2.3.1.2
|
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CVE-2026-12755 (GCVE-0-2026-12755)
Vulnerability from cvelistv5 – Published: 2026-06-25 13:12 – Updated: 2026-06-25 14:52
VLAI
EPSS
VEX
Summary
Improper input validation in the PAM AD discovery endpoints in
Devolutions Server 2026.2.4.0 through 2026.2.7.0 allows an authenticated
user with the UserGroupsView permission to coerce server-side
authentication to an attacker-controlled host, exposing PAM provider
credentials as a NTLMv2 challenge-response, via a crafted DomainName
parameter.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper validation of specified quantity in input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Devolutions | Server |
Affected:
2026.2.4.0 , < 2026.2.7.0
(custom)
|
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CVE-2026-12059 (GCVE-0-2026-12059)
Vulnerability from cvelistv5 – Published: 2026-06-12 06:30 – Updated: 2026-06-12 13:58
VLAI
EPSS
VEX
Title
Cellopoint｜CelloOS - Improper Access Control
Summary
The SSH service of CelloOS developed by Cellopoint has an Improper Access Control vulnerability, allowing authenticated remote attackers to bypass the enforced command restrictions and execute operating system commands outside the originally authorized scope.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper validation of specified quantity in input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.twcert.org.tw/tw/cp-132-10966-3258e-1.html | third-party-advisory |
| https://www.twcert.org.tw/en/cp-139-10965-3ce75-2.html | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cellopoint | CelloOS |
Affected:
0 , < 4.8.0 Build 20260316
(custom)
|
Date Public
2026-06-12 06:27
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CVE-2026-11906 (GCVE-0-2026-11906)
Vulnerability from cvelistv5 – Published: 2026-06-30 19:42 – Updated: 2026-07-01 15:53
VLAI
EPSS
VEX
Title
IBM® Db2® federated server is vulnerable to a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns by autheticated user
Summary
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7277423 | vendor-advisorypatch |
Impacted products
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CVE-2026-11596 (GCVE-0-2026-11596)
Vulnerability from cvelistv5 – Published: 2026-06-10 17:15 – Updated: 2026-06-10 18:18
VLAI
EPSS
VEX
Summary
In ScreenConnect™ versions prior to 26.2, input
validation within the Host Pass creation functionality could allow an
authenticated user with Host Pass creation privileges the ability to specify a
token expiration duration beyond the intended maximum when generating delegated
access tokens.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper validation of specified quantity in input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ConnectWise | ScreenConnect |
Affected:
All versions prior to 26.2
|
Credits
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CVE-2026-9801 (GCVE-0-2026-9801)
Vulnerability from cvelistv5 – Published: 2026-05-28 04:42 – Updated: 2026-06-26 06:46
VLAI
EPSS
VEX
Title
Keycloak: keycloak: denial of service via malformed ldap password policy response
Summary
A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol (LDAP) server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a malformed LDAP password policy response during a password authentication request, the attacker can trigger an OutOfMemoryError. This causes the Keycloak Java Virtual Machine (JVM) to terminate, leading to a denial of service (DoS) for all realms on the affected node.
Severity
4.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:25097 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:25098 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:30049 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:30050 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-9801 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2482473 | issue-trackingx_refsource_REDHAT |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected:
26.4.13-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected:
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(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.4.13 |
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6 |
Unaffected:
26.6.3-3 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.6::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6 |
Unaffected:
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cpe:/a:redhat:build_keycloak:26.6::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6.3 |
cpe:/a:redhat:build_keycloak:26.6::el9 |
Date Public
2026-05-28 04:18
Credits
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CVE-2026-9704 (GCVE-0-2026-9704)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:56 – Updated: 2026-06-26 06:46
VLAI
EPSS
VEX
Title
Keycloak: keycloak: privilege escalation due to oversized subject_token jwt
Summary
A flaw was found in Keycloak. An authenticated user with low privileges can exploit this vulnerability by sending an oversized subject_token JSON Web Token (JWT) to the TokenEndpoint. When the token exceeds a 4000-character limit, it is silently dropped, causing the system to fall back to client credentials. This allows the user to gain the permissions of the client's service account, leading to privilege escalation.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:25097 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:25098 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:30049 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:30050 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-9704 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2481877 | issue-trackingx_refsource_REDHAT |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected:
26.4.13-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
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26.4-19 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.4.13 |
cpe:/a:redhat:build_keycloak:26.4::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6 |
Unaffected:
26.6.3-3 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.6::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6 |
Unaffected:
26.6-6 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.6::el9 |
|
| Red Hat | Red Hat build of Keycloak 26.6.3 |
cpe:/a:redhat:build_keycloak:26.6::el9 |
Date Public
2026-05-27 12:45
Credits
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"name": "RHSA-2026:25097",
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"time": "2026-05-27T12:27:13.702Z",
"value": "Reported to Red Hat."
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"time": "2026-05-27T12:45:59.735Z",
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"title": "Keycloak: keycloak: privilege escalation due to oversized subject_token jwt",
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"value": "To prevent the silent dropping of oversized `subject_token` JWTs, configure Keycloak to enforce strict parameter validation. This involves setting the `fail-fast` parameter to `true` for the `TokenEndpoint` configuration, which will cause requests with oversized parameters to be rejected explicitly rather than silently processed with reduced privileges. Consult Keycloak documentation for the exact method to modify these settings. A restart of the Keycloak service may be necessary for the changes to apply."
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"datePublished": "2026-05-27T12:56:00.858Z",
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Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
No CAPEC attack patterns related to this CWE.