Weakness (CWE)
CWE-400: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How to prevent it (4 mitigations)
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Architecture and Design
Design 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. The login application should be protected against DoS attacks as much as possible. Limiting the database access, perhaps by caching result sets, can help minimize the resources expended. To further limit the potential for a DoS attack, consider tracking the rate of requests received from users and blocking requests that exceed a defined rate threshold.
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Architecture and Design
Mitigation of resource exhaustion attacks requires that the target system either:
- recognizes the attack and denies that user further access for a given amount of time, or
- uniformly throttles all requests in order to make it more difficult to consume resources more quickly than they can again be freed.
The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.
The second solution is simply difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.
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Architecture and Design
Ensure that protocols have specific limits of scale placed on them.
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Implementation
Ensure that all failures in resource allocation place the system into a safe posture.
Source: MITRE CWE-400
1,728 results · Clear filters · Feed
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Medium 5.9
Unbounded SCRAM iteration count causes CPU exhaustion in PgBouncer
Missing upper bound on the key derivation iteration count accepted during SCRAM authentication to a backend server in PgBouncer through 1.25.2 allows a malicious or compromised PostgreSQL backend to cause uncontrolled CPU consumption in PgBouncer. The resulti…
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Medium 6.5
plone.app.dexterity and plone.app.contenttypes have a Denial of Service due to excessive title or description length
plone.app.dexterity is a content-type system for the Plone content management system, and plone.app.contenttypes provides Plone’s Dexterity-based content types. Plone.app.dexterity versions through 3.2.2, 4.0.0 through 4.1.2, and 5.0.0, and plone.app.contentt…
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Medium 6.5
Multiple Vulnerabilities in IBM Concert Software
IBM Concert 1.0.0 through 3.0.0 could allow a remote authenticated attacker to cause a denial of service due to improper enforcement of storage limits.
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Medium 6.5
icalendar: Denial of service via unbounded VALARM REPEAT expansion
icalendar is an RFC 5545 compatible parser and generator of iCalendar files for Python. From 6.1.0 until 7.2.2, vInt.from_ical accepts an attacker-controlled VALARM REPEAT value and applications that request alarm times can eagerly expand it without an applic…
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Medium 6.5
Netdata: Streaming protocol chart slot guard off-by-one allows ~16 GiB allocation request, crashing parent agent
Netdata is an open source observability tool. Prior to 2.10.4, an authenticated child agent can send an oversized CHART SLOT value that str2ull_encoded passes to pluginsd_rrdset_cache_put_to_slot in src/plugins.d/pluginsd_internals.h. The accepted slot drives…
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Medium 5.5
radare2: Uncontrolled resource consumption in radare2 PEF loader
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's Apple Preferred Executable Format loader was vulnerable because the PEF loader accepted relocSecCount values that were not bounded by the number of sectio…
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Medium 6.5
NVIDIA Infrastructure Controller for Linux contains a vulnerability where an attacker could cause uncontrolled resource…
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Medium 6.5
NVIDIA Infrastructure Controller for Linux contains a vulnerability where an attacker may cause uncontrolled resource c…
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Medium 4.3
Apache Neethi: Remote policy fetch lacks a total timeout, allowing a slow server to hang the request indefinitely
When Neethi fetches a remote policy reference, it only limits the time per read, not the whole transfer, so a server that trickles bytes slowly can keep the fetch alive indefinitely and tie up the calling thread (denial of service). Users are recommended to u…
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Medium 5.9
Suricata smb: some SMB flows can cause resource exhaustion
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.17 and 8.0.6, the SMB parser can retain force-completed transactions on flows where Suricata sees payload in only one direction,…
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Medium 6.5
Suricata dhcp: unbounded transactions in unidirectional traffic can lead to resource exhaustion
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with…
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Medium 5.3
c-ares: Memory-amplification denial of service via unvalidated DNS header record counts
c-ares is an asynchronous resolver library. Prior to 1.34.7, ares_dns_parse() trusts the attacker-controlled ANCOUNT, NSCOUNT, and ARCOUNT fields before confirming that the DNS response contains enough bytes for the claimed records. Because process_answer() i…
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Medium 5.3
Really Simple Security (Free) < 9.8.3 - Unauthenticated Unbounded Option Growth via Spoofed Client IP Header
The Really Simple Security WordPress plugin before 9.8.3 does not validate a client-supplied address value before using it as a storage key in one of its own options, allowing unauthenticated attackers to grow that option without bound and to slow the site's …
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Medium 5.3
O-RAN-SC SMO OAM VES Collector allocation of resources
A vulnerability was identified in O-RAN-SC SMO OAM 2025-06-10. This affects an unknown part of the component VES Collector. The manipulation leads to allocation of resources. Remote exploitation of the attack is possible. The exploit is publicly available and…
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Medium 4.3
O-RAN-SC SMO OAM VES Collector allocation of resources
A vulnerability was determined in O-RAN-SC SMO OAM 2025-06-10. Affected by this issue is some unknown functionality of the component VES Collector. Executing a manipulation can lead to allocation of resources. The attack may be launched remotely. The exploit …
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Medium 4.3
O-RAN-SC SMO OAM VES Collector allocation of resources
A vulnerability was found in O-RAN-SC SMO OAM 2025-06-10. Affected by this vulnerability is an unknown functionality of the component VES Collector. Performing a manipulation results in allocation of resources. The attack may be initiated remotely. The exploi…
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Medium 4.3
O-RAN-SC SMO OAM VES Collector memory allocation
A vulnerability has been found in O-RAN-SC SMO OAM 2025-06-10. Affected is an unknown function of the component VES Collector. Such manipulation of the argument additionalFields.padding leads to uncontrolled memory allocation. The attack can be launched remot…
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Medium 5.9
AsyncHttpClient: Connection permit leak on TLS handshake failure causes per-host denial of service
The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 3.0.8 until 3.0.12, a client with maxConnections or maxConnectionsPerHost set above zero leaks one connection permit whe…
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Medium 5.3
Soup Sieve: Polynomial-time ReDoS (O(n²)) in the whitespace/comment trimming regex `RE_WS_END` (triggers on VALID selectors)
Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.9, selector_iter in src/soupsieve/css_parser.py trims the raw selector with RE_WS_END, an end-anchored WSC whitespace-and-comment expression used with search(), so the …
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Medium 5.3
Soup Sieve: Polynomial-time ReDoS (O(n²)) in the `IDENTIFIER` / `VALUE` selector sub-patterns
Soup Sieve is a CSS selector library designed to be used with Beautiful Soup 4. Prior to 2.9, the selector parser in src/soupsieve/css_parser.py defines IDENTIFIER with adjacent quantified groups over overlapping character classes, and VALUE embeds IDENTIFIER…
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Medium 4.3
vgmstream mus_acm.c parse_mus resource consumption
A security flaw has been discovered in vgmstream up to r2117. This issue affects the function parse_mus of the file src/meta/mus_acm.c. The manipulation results in resource consumption. The attack may be launched remotely. The patch is identified as ae37662ad…
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Medium 6.3
OpenTelemetry-Go: BatchProcessor can busy-spin when export buffer is full
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to version 0.21.0, the go.opentelemetry.io/otel/sdk/log BatchingProcessor can enter a tight CPU loop when attacker-driven log emission fills its asynchronous export buffer while the exporter is…
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Medium 5.1
OpenTelemetry-Go: UTF-8 replacement rune bypasses attribute length truncation
OpenTelemetry-Go is the Go implementation of OpenTelemetry. From version 1.10.0 until 1.33.0, the sdk/trace/span.go attribute truncation path can fail to enforce AttributeValueLengthLimit for string and string-slice attributes containing the valid Unicode rep…
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Medium 6.5
vLLM: Request-selected PyNvVideoCodec GPU decode bypasses static VRAM reservation
vLLM is an inference and serving engine for large language models. Prior to 0.28.0, request bodies for Chat Completions and Responses can set media_io_kwargs.video.video_backend to pynvvideocodec, and MediaConnector.fetch_video forwards that choice to VideoMe…
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Medium 4.3
ag-ui-protocol ag-ui JSON sse_parser.cpp resource consumption
A flaw has been found in ag-ui-protocol ag-ui 1.0. Affected is an unknown function of the file src/stream/sse_parser.cpp of the component JSON Parser. Executing a manipulation can lead to resource consumption. The attack may be performed from remote. This pat…
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Medium 4.3
ag-ui-protocol ag-ui SSE Client client.go resource consumption
A security vulnerability has been detected in ag-ui-protocol ag-ui 1.0. This affects an unknown function of the file sdks/community/go/pkg/client/sse/client.go of the component SSE Client. Such manipulation leads to resource consumption. The attack can be exe…
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Medium 4.3
a2ui-project a2ui Update Components basic_functions.ts updateComponents resource consumption
A vulnerability was determined in a2ui-project a2ui 0.9/0.9.1. This issue affects the function updateComponents of the file basic_functions.ts of the component Update Components. Executing a manipulation can lead to resource consumption. The attack can be lau…
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Medium 5.7
Seraphinite Accelerator < 2.29.24 - Subscriber+ DoS via seraph_accel_State Update
The Seraphinite Accelerator WordPress plugin before 2.29.24 does not perform a capability check on one of its state-update AJAX actions, allowing authenticated users such as subscribers to write a malformed value that causes an uncaught error on every subsequ…
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Medium 5.3
vllm-project vLLM MoRIIO Acknowledgement moriio_connector.py MoRIIOWrapper._handle_release_message resource consumption
A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0. Affected is the function MoRIIOConnectorScheduler.request_finished/MoRIIOConnectorWorker.get_finished/MoRIIOWrapper._handle_release_message of the file vllm/distributed/kv_transfer/kv_connector/v1/…
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Medium 5.3
a2ui-project a2ui Basic Catalog safe_regex.ts redos
A vulnerability was identified in a2ui-project a2ui up to 0.10.6. Affected is an unknown function of the file renderers/web_core/src/v0_9/basic_catalog/functions/safe_regex.ts of the component Basic Catalog. Such manipulation leads to inefficient regular expr…
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Medium 6.0
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version tha…
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Medium 6.0
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version tha…
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Medium 6.0
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version tha…
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Medium 6.1
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version tha…
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Medium 4.4
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version tha…
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Medium 5.3
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). The supported version tha…
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Medium 5.3
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: WebSocket). Supported versions that are af…
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Medium 5.3
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-media-multipart). Supported versio…
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Medium 5.3
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: JSON). Supported versions that are affecte…
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Medium 4.3
Vulnerability in the Oracle Coherence product of Oracle Fusion Middleware (component: Core). Supported versions that ar…