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.
546 vulnerabilities reference this CWE, most recent first.
CVE-2026-77640 (GCVE-0-2026-77640)
Vulnerability from cvelistv5 – Published: 2026-08-20 21:02 – Updated: 2026-08-21 20:08
VLAI
EPSS
VEX
Summary
tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1. A truncated stream never reaches Z_STREAM_END, causing zlib to return Z_BUF_ERROR with no input remaining, which buf_add_compress() mistook for a full output buffer and retried forever. Fixed by returning TOR_COMPRESS_ERROR in that case so the caller can abort cleanly. This is TROVE-2026-021.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:51 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| torproject | Tor |
Affected:
0.2.6.1-alpha , < 0.4.9.9
(custom)
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* |
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CVE-2026-75897 (GCVE-0-2026-75897)
Vulnerability from cvelistv5 – Published: 2026-08-18 17:05 – Updated: 2026-08-18 19:21
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in Capabilities Route in OpenSearch Dashboards
Summary
Improper input validation in the capabilities route handler in OpenSearch Dashboards - the size of the request payload is not bounded - might allow remote attackers to cause a denial of service via a crafted HTTP request.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:10 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://opensearch.org/downloads/ | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSearch | OpenSearch Dashboards |
Affected:
1.3 , ≤ 3.7.0
(custom)
cpe:2.3:a:opensearch:opensearch_dashboards:*:*:*:*:*:*:*:* |
|
| AWS | Amazon OpenSearch Service |
Affected:
1.3 , ≤ 3.5
(custom)
cpe:2.3:a:aws:amazon_opensearch_service:*:*:*:*:*:*:*:* |
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CVE-2026-73194 (GCVE-0-2026-73194)
Vulnerability from cvelistv5 – Published: 2026-08-15 12:09 – Updated: 2026-08-17 20:29
VLAI
EPSS
VEX
Title
DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse
Summary
DBI versions before 1.652 for Perl allow a heap out-of-bounds write via an unvalidated numeric placeholder that sets the binder counter in preparse.
preparse reserves seven output bytes per input byte, the width of the longest ':p99999' expansion. The ':N' branch parses the number with `atoi(src)` and assigns it to the binder counter with no range check, so a statement containing ':2147483648' leaves the counter negative (-2147483648 with glibc, where atoi wraps). Each following '?' then expands through `sprintf(start, ":p%d", idx++)` to ':p-2147483648', 14 bytes with the terminating NUL where the buffer budgets 7. The placeholder limit added in 1.650 tests the counter against 99,999, which a negative counter passes.
Any caller that preparses an untrusted statement into ':pN' style placeholders gets a heap out-of-bounds write that grows with the number of '?' marks following the poisoned placeholder. The '?' and '%s' return styles compare the parsed number against the expected sequence and error out, and are unaffected.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 20:29 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/perl5-dbi/dbi/security/advisor… | vendor-advisory |
| https://github.com/perl5-dbi/dbi/commit/29b72ae7d… | patch |
| https://www.cve.org/CVERecord?id=CVE-2026-14739 | related |
| https://www.cve.org/CVERecord?id=CVE-2026-10879 | related |
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CVE-2026-71394 (GCVE-0-2026-71394)
Vulnerability from cvelistv5 – Published: 2026-08-10 10:23 – Updated: 2026-08-10 17:49 X_Open Source
VLAI
EPSS
VEX
Title
Heap Use of Uninitialized Memory in GNU Emacs for Android
Summary
GNU Emacs for Android improperly validates the table header input in sfnt_read_table_directory() in src/sfnt.c. Due to an incorrect comparison variable in the read-length check, a crafted font file that claims to contain more table directory entries than actually present causes the parser to return a struct with uninitialized heap memory in the table directory entries. An attacker can deliver a malicious font file via email, EWW (Emacs Web Wowser), or documents with custom faces, causing Emacs to load it. This leads to the use of uninitialized heap data in subsequent table lookups, potentially resulting in information disclosure, crashes, or arbitrary memory access on 32-bit targets.
This issue is fixed after commit 7621ee1d01229d50e5c0cddea6bf0b01095a62cf
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 17:49 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/08/CVE-2026-71391 | third-party-advisory |
| https://www.gnu.org/savannah-checkouts/gnu/emacs/… | product |
Impacted products
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CVE-2026-71314 (GCVE-0-2026-71314)
Vulnerability from cvelistv5 – Published: 2026-08-05 20:58 – Updated: 2026-08-06 13:33
VLAI
EPSS
VEX
Title
Nuxt: Unauthenticated out-of-memory crash via unbounded v-for expansion in island rendering
Summary
Nuxt is an open-source web development framework for Vue.js. From 3.1.0 until 3.21.10 and 4.5.1, an unauthenticated attacker can use a server island v-for prop, including vforToArray and , to trigger unbounded SSR memory allocation until MAX_VFOR_LENGTH = 100000 and crash the Nuxt process. This issue is fixed in 3.21.10 and 4.5.1.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 13:33 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/nuxt/nuxt/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/nuxt/nuxt/commit/4e35ae9babd94… | x_refsource_MISC |
| https://github.com/nuxt/nuxt/commit/668cdfdfda418… | x_refsource_MISC |
| https://github.com/nuxt/nuxt/releases/tag/v3.21.10 | x_refsource_MISC |
| https://github.com/nuxt/nuxt/releases/tag/v4.5.1 | x_refsource_MISC |
Impacted products
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CVE-2026-70378 (GCVE-0-2026-70378)
Vulnerability from cvelistv5 – Published: 2026-08-05 06:58 – Updated: 2026-08-10 11:44
VLAI
EPSS
VEX
Title
imagecli - Negative carve Ratio Bypasses Bounds Check and Crashes Process via Reachable Panic
Summary
imagecli's pipeline operation (Carve::apply in src/image_ops.rs) only asserts , never validating that the ratio is positive. A negative ratio (e.g. -5) causes the computed target width to saturate to 0 via Rust's defined float-to-uint cast, which is then passed to imageproc::seam_carving::shrink_width — a function that panics when given a width below 2, crashing the process.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 13:14 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/theotherphil/imagecli/issues/67 | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| theotherphil | imagecli |
Affected:
0 , ≤ 0.2.1
(custom)
|
Date Public
2026-08-05 06:58
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CVE-2026-66679 (GCVE-0-2026-66679)
Vulnerability from cvelistv5 – Published: 2026-08-18 13:59 – Updated: 2026-08-18 19:48
VLAI
EPSS
VEX
Title
WordPress Appointment Hour Booking plugin <= 1.5.91 - Broken Access Control vulnerability
Summary
Unauthenticated Broken Access Control in Appointment Hour Booking <= 1.5.91 versions.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:34 UTC
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 | |
|---|---|---|---|
| codepeople | Appointment Hour Booking |
Affected:
n/a , ≤ 1.5.91
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CVE-2026-66374 (GCVE-0-2026-66374)
Vulnerability from cvelistv5 – Published: 2026-07-25 00:28 – Updated: 2026-07-27 14:36
VLAI
EPSS
VEX
Summary
Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ (DNS-over-QUIC) receive path.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 14:35 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nic | Knot Resolver |
Affected:
0 , < 6.4.1
(semver)
cpe:2.3:a:nic:knot_resolver:*:*:*:*:*:*:*:* |
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CVE-2026-59997 (GCVE-0-2026-59997)
Vulnerability from cvelistv5 – Published: 2026-07-08 00:09 – Updated: 2026-07-08 12:52
VLAI
EPSS
VEX
Summary
internal-sftp in sshd in OpenSSH before 10.4 recognizes only the first 9 command-line arguments, which can be important if a later command-line argument would have helped to ensure the intended security properties of an SFTP connection.
Severity
4.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 12:52 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
References
Impacted products
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CVE-2026-59930 (GCVE-0-2026-59930)
Vulnerability from cvelistv5 – Published: 2026-07-08 16:13 – Updated: 2026-07-09 13:54
VLAI
EPSS
VEX
Title
Mistune toc / TableOfContents directive: heading IDs use predictable `toc_N` numbering with no slugification, allowing collision with attacker-controlled `id="toc_N"` content
Summary
Mistune is a Python Markdown parser with renderers and plugins. Prior to 3.3.0, the toc plugin and TableOfContents directive generate heading IDs as predictable toc_N values without slugifying the heading text, allowing attacker-controlled id="toc_N" content to collide with generated anchors and redirect same-page navigation, CSS selectors, or JavaScript handlers. This issue is fixed in version 3.3.0.
Severity
4.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 13:53 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/lepture/mistune/security/advis… | x_refsource_CONFIRM |
| https://github.com/lepture/mistune/commit/c4093c4… | x_refsource_MISC |
| https://github.com/lepture/mistune/releases/tag/v3.3.0 | x_refsource_MISC |
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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.