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.
619 vulnerabilities reference this CWE, most recent first.
CVE-2026-94646 (GCVE-0-2026-94646)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:52 – Updated: 2026-10-02 13:50
VLAI
EPSS
VEX
Title
Apache Thrift: Node.js `server.js` ends the process on any per-connection error (+ two triggers)
Summary
Uncaught exception, Improper validation of specified quantity in input, Improperly controlled modification of object prototype attributes ('prototype pollution') vulnerability in Apache Thrift nodejs bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 13:50 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/5hjh0gz8wf6bo7ydx… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
|
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CVE-2026-94645 (GCVE-0-2026-94645)
Vulnerability from cvelistv5 – Published: 2026-10-02 10:51 – Updated: 2026-10-05 16:26
VLAI
EPSS
VEX
Title
Apache Thrift: Node.js `TJSONProtocol` uses a peer-declared container size as an unbounded loop bound
Summary
Improper validation of specified quantity in input, Allocation of resources without limits or throttling vulnerability in Apache Thrift nodejs bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 16:26 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/p96mokqfy16mnqfyo… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
|
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CVE-2026-94636 (GCVE-0-2026-94636)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:47 – Updated: 2026-10-02 17:32
VLAI
EPSS
VEX
Title
Apache Thrift: Python `TZlibTransport` stops enforcing its decompressed-size limit once the limit is exactly used up
Summary
Improper handling of highly compressed data (data amplification), Function call with incorrectly specified arguments, Improper validation of specified quantity in input vulnerability in Apache Thrift py bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 17:32 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/1rpq0d0g6yzjjzl1z… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
|
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CVE-2026-94450 (GCVE-0-2026-94450)
Vulnerability from cvelistv5 – Published: 2026-09-22 20:04 – Updated: 2026-09-23 12:43
VLAI
EPSS
VEX
Title
Potential denial of service when configured to send Retry packets in s2n-quic
Summary
Improper validation of the Destination Connection ID length in s2n-quic 1.88.0 and earlier may allow an unauthenticated remote user to cause a denial of service by shutting down a server endpoint via a single crafted UDP datagram. Only server endpoints specifically configured to send Retry packets are affected.
To remediate this issue, users should upgrade to version v1.89.0 or later.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 12:43 UTC
CWE
- CWE-1284 - Improper validation of specified quantity in input
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aws/s2n-quic/releases/tag/v1.89.0 | patchrelease-notes |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/aws/s2n-quic/security/advisori… | release-notes |
Impacted products
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CVE-2026-93749 (GCVE-0-2026-93749)
Vulnerability from cvelistv5 – Published: 2026-09-18 17:51 – Updated: 2026-09-24 14:23
VLAI
EPSS
VEX
Title
source-map-js through 1.2.1 Event Loop Denial of Service
Summary
source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the service from handling other requests.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 15:16 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/7rulnik/source-map-js/issues/76 | issue-tracking |
| https://github.com/7rulnik/source-map-js | product |
| https://github.com/7rulnik/source-map-js/blob/c1c… | technical-description |
| https://www.vulncheck.com/advisories/source-map-j… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| 7rulnik | source-map-js |
Affected:
0 , ≤ 1.2.1
(semver)
|
Date Public
2026-09-17 00:00
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CVE-2026-93345 (GCVE-0-2026-93345)
Vulnerability from cvelistv5 – Published: 2026-09-22 17:07 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
MikroTik RouterOS < 7.25beta4 Improper Input Validation DoS via BGP Labelled-VPN NLRI
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 18:26 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://forum.mikrotik.com/t/7-25beta-development… | release-notespatch |
| https://www.vulncheck.com/advisories/mikrotik-rou… | third-party-advisory |
Impacted products
Date Public
2026-09-10 00:00
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CVE-2026-93015 (GCVE-0-2026-93015)
Vulnerability from cvelistv5 – Published: 2026-09-17 15:16 – Updated: 2026-09-17 19:19
VLAI
EPSS
VEX
Title
BlueKitchen BTstack through 1.8.2 A2DP SEP Discovery Out-of-Bounds Write
Summary
BlueKitchen BTstack through 1.8.2 fails to validate the peer-reported endpoint count against table bounds in A2DP stream endpoint discovery. A bonded peer can send an AVDTP DISCOVER response with more endpoints than the fixed table holds, causing out-of-bounds writes that corrupt adjacent static objects and crash the process or sever event delivery.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 19:17 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/bluekitchen/btstack/commit/fc2… | patch |
| https://github.com/bluekitchen/btstack/blob/v1.8.… | technical-description |
| https://github.com/bluekitchen/btstack/blob/v1.8.… | technical-description |
| https://github.com/bluekitchen/btstack | product |
| https://www.vulncheck.com/advisories/bluekitchen-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| BlueKitchen GmbH | BTstack |
Affected:
0 , ≤ 1.8.2
(semver)
|
Date Public
2026-07-22 00:00
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CVE-2026-91137 (GCVE-0-2026-91137)
Vulnerability from cvelistv5 – Published: 2026-10-02 10:18 – Updated: 2026-10-02 10:44
VLAI
EPSS
VEX
Title
Apache Thrift: PHP `thrift_protocol` accelerator: zero-byte container elements
Summary
Improper validation of specified quantity in input, Allocation of resources without limits or throttling, Excessive Iteration vulnerability in Apache Thrift PHP bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 10:43 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/bf12g1b11r4x9x3ws… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
|
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CVE-2026-89420 (GCVE-0-2026-89420)
Vulnerability from cvelistv5 – Published: 2026-09-22 11:16 – Updated: 2026-09-22 12:04
VLAI
EPSS
VEX
Title
Session voucher adding no new funds is accepted without a charge in mpp, serving paid resources for free
Summary
Improper Validation of Specified Quantity in Input in ZenHive mpp allows a client holding an open payment channel to obtain paid resources without being charged.
MPP.Session.Actions.accept_voucher/3 in lib/mpp/session/actions.ex treats a voucher whose cumulativeAmount equals the channel's already-accepted cumulative amount as an idempotent success, returning the channel unchanged without calling maybe_spend/2. The credential verifies, the protected resource is served, and spent and units stay where they were. Because the server issues a fresh challenge per request and the credential replay store keys on challenge id and payload, the same signed voucher can be re-presented under every new challenge, so one paid voucher yields an unbounded number of paid units. The path is reachable from any method built on MPP.Session.Method through the Plug, MCP, JSON-RPC and WebSocket transports.
This issue affects mpp: from 0.14.0 before 0.16.2.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 12:03 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/ZenHive/mpp/security/advisorie… | relatedvendor-advisory |
| https://cna.erlef.org/cves/CVE-2026-89420.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-89420 | related |
| https://github.com/ZenHive/mpp/commit/82df569c898… | related |
| https://github.com/ZenHive/mpp/commit/7270edc1dcf… | patch |
Impacted products
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CVE-2026-87962 (GCVE-0-2026-87962)
Vulnerability from cvelistv5 – Published: 2026-09-10 10:52 – Updated: 2026-09-10 12:56
VLAI
EPSS
VEX
Title
t-digest 3.1 through 3.3 Denial of Service via Unvalidated Length Fields in MergingDigest.fromBytes
Summary
t-digest versions 3.1 through 3.3 contain a denial of service vulnerability in MergingDigest.fromBytes that fails to validate length and capacity fields from serialized data. Attackers can supply crafted serialized digests with mismatched header fields to trigger ArrayIndexOutOfBoundsException or NegativeArraySizeException, aborting the parsing thread.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 12:56 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/tdunning/t-digest/issues/227 | issue-tracking |
| https://github.com/tdunning/t-digest/blob/7905f3d… | technical-description |
| https://github.com/tdunning/t-digest | product |
| https://www.vulncheck.com/advisories/t-digest-3.1… | third-party-advisory |
Date Public
2026-08-14 00:00
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"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1284",
"description": "Improper Validation of Specified Quantity in Input",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-10T10:52:38.047Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Issue #227",
"tags": [
"issue-tracking"
],
"url": "https://github.com/tdunning/t-digest/issues/227"
},
{
"name": "MergingDigest.java",
"tags": [
"technical-description"
],
"url": "https://github.com/tdunning/t-digest/blob/7905f3d2ad18e7d7176811147d1316a3e23d7061/core/src/main/java/com/tdunning/math/stats/MergingDigest.java"
},
{
"tags": [
"product"
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"url": "https://github.com/tdunning/t-digest"
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{
"name": "VulnCheck Advisory: t-digest 3.1 through 3.3 Denial of Service via Unvalidated Length Fields in MergingDigest.fromBytes",
"tags": [
"third-party-advisory"
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"url": "https://www.vulncheck.com/advisories/t-digest-3.1-through-3.3-denial-of-service-via-unvalidated-length-fields-in-mergingdigest-frombytes"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "t-digest 3.1 through 3.3 Denial of Service via Unvalidated Length Fields in MergingDigest.fromBytes",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-87962",
"datePublished": "2026-09-10T10:52:38.047Z",
"dateReserved": "2026-09-09T17:35:22.800Z",
"dateUpdated": "2026-09-10T12:56:58.192Z",
"state": "PUBLISHED"
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"dataType": "CVE_RECORD",
"dataVersion": "5.2"
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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.