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Weakness (CWE)

CWE-1284: Improper Validation of Specified Quantity in Input

Base 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.

How to prevent it (1 mitigation)

  1. Implementation

    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.

Source: MITRE CWE-1284

All Critical High Medium Low Exploited only Public exploit

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  • High 7.5
    CVE-2026-53587 Public exploit

    libgit2 - Unauthenticated network-reachable heap out-of-bounds read in transports/smart_pkt.c:set_data

    libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, libgit2 performs a fixed-size strncmp in set_data in src/libgi…

    libgit2 libgit2 libgit2 libgit2 Debian Ubuntu Alpine
  • High 8.1
    CVE-2026-66374 Public exploit

    Knot Resolver before 6.4.1 allows remote code execution via a heap-based buffer overflow in the DoQ (DNS-over-QUIC) rec…

    NIC Knot Resolver knot-resolver knot-resolver Debian Ubuntu
  • High 8.6
    CVE-2025-48507 Public exploit

    The security state of the calling processor into Trusted Firmware (TF-A) is not used and could potentially allow non-se…

    AMD Zynq™ UltraScale+ RFSoCs Zynq™ UltraScale+ MPSoCs Kria™ SOM
  • High 8.7
    CVE-2025-5349 Public exploit

    NetScaler ADC and NetScaler Gateway - Improper access control on the NetScaler Management Interface

    Improper access control on the NetScaler Management Interface in NetScaler ADC and NetScaler Gateway

    NetScaler ADC
  • High 7.3
    CVE-2023-38709 Public exploit

    Apache HTTP Server: HTTP response splitting

    Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses. This issue affects Apache HTTP Server: through 2.4.58.

    Apache Software Foundation Apache HTTP Server apache2 apache2 Debian Ubuntu Alpine
  • High 7.8
    CVE-2022-20493 Public exploit

    In Condition of Condition.java, there is a possible way to grant notification access due to improper input validation. …

    Android