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CWE-770 (不加限制或调节的资源分配) — Vulnerability Class 827

827 vulnerabilities classified as CWE-770 (不加限制或调节的资源分配). AI Chinese analysis included.

CWE-770 represents a critical resource management weakness where software allocates reusable resources, such as memory, file descriptors, or database connections, without enforcing limits or throttling mechanisms. This vulnerability typically arises when applications accept untrusted input or handle high-volume requests, allowing malicious actors to trigger excessive resource consumption. By rapidly requesting numerous resources, attackers can exhaust system capacity, leading to denial-of-service conditions that degrade performance or crash the entire service. To mitigate this risk, developers must implement strict quotas, rate limiting, and connection pooling strategies. Enforcing maximum thresholds for resource allocation ensures that no single user or process can monopolize system assets, thereby maintaining stability and availability even under heavy load or targeted abuse attempts.

MITRE CWE Description
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Common Consequences (1)
AvailabilityDoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory), DoS: Resource Consumption (Other)
When allocating resources without limits, an attacker could prevent other systems, applications, or processes from accessing the same type of resource. It can be easy for an attacker to consume many resources by rapidly making many requests or causing larger resources to be used than is needed.
Mitigations (5)
RequirementsClearly specify the minimum and maximum expectations for capabilities, and dictate which behaviors are acceptable when resource allocation reaches limits.
Architecture and DesignLimit the amount of resources that are accessible to unprivileged users. Set per-user limits for resources. Allow the system administrator to define these limits. Be careful to avoid CWE-410.
Architecture and DesignDesign throttling mechanisms into the system architecture. The best protection is to limit the amount of resources that an unauthorized user can cause to be expended. A strong authentication and access control model will help prevent such attacks from occurring in the first place, and it will help the administrator to identify who is committing the abuse. The login application should be protected …
ImplementationAssume 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…
Architecture and DesignFor any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Examples (2)
This code allocates a socket and forks each time it receives a new connection.
sock=socket(AF_INET, SOCK_STREAM, 0); while (1) { newsock=accept(sock, ...); printf("A connection has been accepted\n"); pid = fork(); }
Bad · C
In the following example a server socket connection is used to accept a request to store data on the local file system using a specified filename. The method openSocketConnection establishes a server socket to accept requests from a client. When a client establishes a connection to this service the getNextMessage method is first used to retrieve from the socket the name of the file to store the da…
int writeDataFromSocketToFile(char *host, int port) { char filename[FILENAME_SIZE]; char buffer[BUFFER_SIZE]; int socket = openSocketConnection(host, port); if (socket < 0) { printf("Unable to open socket connection"); return(FAIL); } if (getNextMessage(socket, filename, FILENAME_SIZE) > 0) { if (openFileToWrite(filename) > 0) { while (getNextMessage(socket, buffer, BUFFER_SIZE) > 0){ if (!(writeToFile(buffer) > 0)) break; } } closeFile(); } closeSocket(socket); }
Bad · C
CVE IDTitleCVSSSeverityPublished
CVE-2025-36123 IBM Db2 Denial of Service — Db2 for Linux, UNIX and Windows 6.2 Medium2026-01-30
CVE-2025-36387 IBM Db2 Denial of Service — Db2 for Linux, UNIX and Windows 6.5 Medium2026-01-30
CVE-2025-68934 Discourse Has Denial of Service (DoS) Vulnerability in Drafts Creation Endpoint — discourse 6.5 Medium2026-01-28
CVE-2025-68659 Discourse has DoS vulnerability in username change endpoint — discourse 4.3 Medium2026-01-28
CVE-2020-36943 aSc TimeTables 2021.6.2 - Denial of Service — asc Timetables 7.5 High2026-01-28
CVE-2026-24738 gmrtd ReadFile Vulnerable to Denial of Service via Excessive TLV Length Values — gmrtd 7.5AIHighAI2026-01-27
CVE-2026-23881 Kyverno Denial of Service via Context Variable Amplification in Policy Engine — kyverno 7.7 High2026-01-27
CVE-2020-36950 Laravel Nova 3.7.0 - 'range' DoS — Laravel Nova 6.5 Medium2026-01-27
CVE-2020-36949 TapinRadio 2.13.7 - Denial of Service — TapinRadio 7.5 High2026-01-27
CVE-2020-36946 SyncBreeze 10.0.28 - 'login' Denial of Service — SyncBreeze 7.5 High2026-01-27
CVE-2025-14525 Kubevirt: kubevirt: vm administration denial of service via guest agent — Red Hat OpenShift Virtualization 4 6.4 Medium2026-01-26
CVE-2026-1224 Tanium addressed an uncontrolled resource consumption vulnerability in Discover. — Discover 4.9 Medium2026-01-26
CVE-2021-47895 Nsauditor 3.2.2.0 - 'Event Description' Denial of Service — Nsauditor 7.5 High2026-01-23
CVE-2021-47894 Managed Switch Port Mapping Tool 2.85.2 - Denial of Service — Managed Switch Port Mapping Tool 7.5 High2026-01-23
CVE-2021-47893 AgataSoft PingMaster Pro 2.1 - Denial of Service — AgataSoft PingMaster Pro 7.5 High2026-01-23
CVE-2025-13927 Allocation of Resources Without Limits or Throttling in GitLab — GitLab 7.5 High2026-01-22
CVE-2026-1102 Allocation of Resources Without Limits or Throttling in GitLab — GitLab 5.3 Medium2026-01-22
CVE-2026-24006 Seroval affected by Denial of Service via Deeply Nested Objects — seroval 7.5 High2026-01-22
CVE-2026-23963 Mastodon missing length limits on list names, filter names, and filter keywords — mastodon 4.3 Medium2026-01-22
CVE-2026-23962 Mastodon vulnerable to Denial of Service from a single post (client/server) — mastodon 7.5 High2026-01-22
CVE-2026-23957 seroval is vulnerable to Denial of Service via array serialization — seroval 7.5 High2026-01-22
CVE-2025-68138 EVerest affected by memory exhaustion in libocpp — everest-core 4.7 Medium2026-01-21
CVE-2025-68136 EVerest's inadequate session handling can lead to memory-related errors or exhaustion of the operating system’s file descriptors, resulting in a denial of service — everest-core 7.4 High2026-01-21
CVE-2021-47877 GeoGebra Graphing Calculato‪r‬ 6.0.631.0 - Denial Of Service — GeoGebra Graphing Calculato‪r‬ 7.5 High2026-01-21
CVE-2021-47876 GeoGebra Classic 5.0.631.0-d - Denial of Service — GeoGebra Classic 7.5 High2026-01-21
CVE-2021-47875 GeoGebra CAS Calculator 6.0.631.0 - Denial of Service — CAS Calculator 9.8 Critical2026-01-21
CVE-2021-47865 ProFTPD 1.3.7a - Remote Denial of Service — ProFTPD 7.5 High2026-01-21
CVE-2025-68133 EVerest's unlimited connections can lead to DoS through operating system resource exhaustion — everest-core 7.4 High2026-01-21
CVE-2025-11044 Vulnerability on Automation Runtime my cause DoS Conditions — Automation Runtime 6.8 Medium2026-01-19
CVE-2026-23490 pyasn1 has a DoS vulnerability in decoder — pyasn1 7.5 High2026-01-16

Vulnerabilities classified as CWE-770 (不加限制或调节的资源分配) represent 827 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.