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.
566 vulnerabilities reference this CWE, most recent first.
CVE-2026-11721 (GCVE-0-2026-11721)
Vulnerability from cvelistv5 – Published: 2026-07-22 14:13 – Updated: 2026-07-22 18:52
VLAI
EPSS
VEX
Title
Cache poisoning possible with label count discrepancy, RRSIG, and wildcards
Summary
It is possible for an attacker's zone to respond to a query with an RRSIG that has a smaller number of labels than the zone in which the RRSIG is contained. This causes `named` to produce a wildcard name for a zone that is shorter than the attacker's zone, which can result in cache poisoning. For this attack to have any effect, the resolver under attack must have set `synth-from-dnssec yes;` (which is the default).
This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:52 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-11721 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.26 | patch |
| https://downloads.isc.org/isc/bind9/9.21.24 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.11.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.24 (custom) Affected: 9.21.0 , ≤ 9.21.23 (custom) Affected: 9.11.3-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.24-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-07-22 00:00
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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 · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 18:18 UTC
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
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CVE-2026-10822 (GCVE-0-2026-10822)
Vulnerability from cvelistv5 – Published: 2026-07-22 14:09 – Updated: 2026-07-22 18:53
VLAI
EPSS
VEX
Title
Key Record using PRIVATEDNS algorithm may lead to unexpected exit
Summary
If BIND encounters a particular invalid data structure in a DNS record, it will accept the invalid data, and may subsequently abort and exit.
BIND will first need to store a DNS record for a key (KEY, DNSKEY, etc.). That key must specify a PRIVATEDNS algorithm (253), and in the algorithm identifier, improperly give a length longer than the actual identifier data. The invalid identifier will be stored. If BIND later needs to render that record to text, it will use the invalid length during processing, leading to a consistency check failing.
This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:53 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://kb.isc.org/docs/cve-2026-10822 | vendor-advisory |
| https://downloads.isc.org/isc/bind9/9.20.26 | patch |
| https://downloads.isc.org/isc/bind9/9.21.24 | patch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ISC | BIND 9 |
Affected:
9.18.0 , ≤ 9.18.50
(custom)
Affected: 9.20.0 , ≤ 9.20.24 (custom) Affected: 9.21.0 , ≤ 9.21.23 (custom) Affected: 9.18.11-S1 , ≤ 9.18.50-S1 (custom) Affected: 9.20.9-S1 , ≤ 9.20.24-S1 (custom) cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:* |
Date Public
2026-07-22 00:00
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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 · CISA-ADP (v2.0.3)
Decision recorded 2026-05-30 01:53 UTC
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:
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
2026-05-28 04:18
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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 · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 15:29 UTC
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 |
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| 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
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CVE-2026-8047 (GCVE-0-2026-8047)
Vulnerability from cvelistv5 – Published: 2026-05-26 06:49 – Updated: 2026-05-26 10:48
VLAI
EPSS
VEX
Title
Out-of-bounds Write in CODESYS Control
Summary
The affected products perform improper length checking when parsing incoming HTTP requests, resulting in a size-limited out-of-bounds write. An unauthenticated remote attacker can exploit this flaw to cause a denial of service via a system crash on the affected device.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 10:45 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | CODESYS Control RTE (SL) |
Affected:
3.5.21.0 , < 3.5.22.20
(semver)
|
|
| CODESYS | CODESYS Control RTE (for Beckhoff CX) SL |
Affected:
3.5.21.0 , < 3.5.22.20
(semver)
|
|
| CODESYS | CODESYS Control Win (SL) |
Affected:
3.5.21.0 , < 3.5.22.20
(semver)
|
|
| CODESYS | CODESYS HMI (SL) |
Affected:
3.5.21.0 , < 3.5.22.20
(semver)
|
|
| CODESYS | CODESYS Runtime Toolkit |
Affected:
3.5.21.0 , < 3.5.22.20
(semver)
|
|
| CODESYS | CODESYS Control for BeagleBone SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for emPC-A/iMX6 SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for IOT2000 SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for Linux ARM SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for Linux SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for PFC100 SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for PFC200 SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for PLCnext SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for Raspberry Pi SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Control for WAGO Touch Panels 600 SL |
Affected:
0.0.0 , < 4.21.0.0
(semver)
|
|
| CODESYS | CODESYS Virtual Control SL |
Affected:
4.15.0.0 , < 4.21.0.0
(semver)
|
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CVE-2026-7254 (GCVE-0-2026-7254)
Vulnerability from cvelistv5 – Published: 2026-05-27 13:12 – Updated: 2026-05-27 14:48
VLAI
EPSS
VEX
Title
Open BMC Denial of Service
Summary
IBM OPENBMC FW1110.00 through FW1110.11 is vulnerable to denial of service attacks by unauthenticated network users.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 14:48 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7272993 | vendor-advisorypatch |
Impacted products
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CVE-2026-6915 (GCVE-0-2026-6915)
Vulnerability from cvelistv5 – Published: 2026-04-29 16:51 – Updated: 2026-04-29 17:49
VLAI
EPSS
VEX
Title
Flaw in the updateUser Command May Allow Unauthorized Configuration Change
Summary
An authorization flaw in the user management command could allow an authenticated user to make limited changes to authentication-related data associated with another user account. This could affect how authentication is performed for the impacted account.
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-29 17:49 UTC
CWE
- CWE-1284 - Improper validation of specified quantity in input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB | MongoDB Server |
Affected:
8.2.0 , < 8.2.7
(custom)
Affected: 8.0.0 , < 8.0.21 (custom) Affected: 7.0.0 , < 7.0.32 (custom) |
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CVE-2026-6839 (GCVE-0-2026-6839)
Vulnerability from cvelistv5 – Published: 2026-04-22 06:07 – Updated: 2026-04-22 12:30
VLAI
EPSS
VEX
Summary
Improper validation of STRING tensor offsets could allows malformed string metadata to trigger out of bounds access during constant tensor import in Samsung Open Source ONE
Affected version is prior to commit 1.30.0.
Severity
6.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-22 12:29 UTC
CWE
- CWE-1284 - Improper validation of specified quantity in input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | ONE |
Affected:
1.30.0
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CVE-2026-3676 (GCVE-0-2026-3676)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:48 – Updated: 2026-05-27 14:38
VLAI
EPSS
VEX
Title
There are multiple vulnerabilities in IBM DB2 bundled with IBM Application Performance Management products.
Summary
IBM Cloud APM, Base Private 8.1.4 and IBM Cloud APM, Advanced Private 8.1.4 IBM Db2 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 the Fenced environment.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-27 14:34 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7273649 | vendor-advisorypatch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | Cloud APM, Base Private |
Affected:
8.1.4 , ≤ ) Interim Fix 021
(semver)
cpe:2.3:a:ibm:cloud_apm_base_private:8.1.4:*:*:*:*:*:*:* |
|
| IBM | Cloud APM, Advanced Private |
Affected:
8.1.4
cpe:2.3:a:ibm:cloud_apm_advanced_private:8.1.4:*:*:*:*:*:*:* |
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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.