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CWE-400 (未加控制的资源消耗(资源穷尽)) — Vulnerability Class 2079

2079 vulnerabilities classified as CWE-400 (未加控制的资源消耗(资源穷尽)). AI Chinese analysis included.

CWE-400 represents a critical resource management weakness where software fails to properly control the allocation and maintenance of finite system resources, such as memory, CPU cycles, or file descriptors. Attackers typically exploit this vulnerability by triggering actions that consume excessive resources, leading to denial-of-service conditions that degrade performance or crash the application entirely. This often occurs through crafted inputs that force infinite loops, excessive data processing, or unbounded memory allocation. To mitigate this risk, developers must implement strict resource limits, including timeouts, maximum iteration counts, and memory caps. Additionally, employing robust input validation and monitoring tools helps detect abnormal consumption patterns early. By enforcing these controls, engineers ensure that applications remain resilient against resource exhaustion attacks, maintaining availability and stability even under malicious stress or unexpected load spikes.

MITRE CWE Description
The product does not properly control the allocation and maintenance of a limited resource.
Common Consequences (2)
Availability DoS: Crash, Exit, or Restart, DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory), DoS: Resource Consumption (Other)
If an attacker can trigger the allocation of the limited resources, but the number or size of the resources is not controlled, then the most common result is denial of service. This would prevent valid users from accessing the product, and it could potentially have an impact on the surrounding envir…
Access Control, Other Bypass Protection Mechanism, Other
In some cases it may be possible to force the product to "fail open" in the event of resource exhaustion. The state of the product -- and possibly the security functionality - may then be compromised.
Mitigations (4)
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, perha…
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 preven…
Architecture and Design Ensure that protocols have specific limits of scale placed on them.
Implementation Ensure that all failures in resource allocation place the system into a safe posture.
Examples (2)
The following example demonstrates the weakness.
class Worker implements Executor { ... public void execute(Runnable r) { try { ... } catch (InterruptedException ie) { // postpone response Thread.currentThread().interrupt(); } } public Worker(Channel ch, int nworkers) { ... } protected void activate() { Runnable loop = new Runnable() { public void run() { try { for (;;) { Runnable r = ...; r.run(); } } catch (InterruptedException ie) { ... } } }; new Thread(loop).start(); } }
Bad · Java
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
CVE ID Title CVSS Severity Published
CVE-2026-105759 vLLM: Unbounded Prometheus label cardinality from attacker-controlled HTTP method tokens in the vLLM Rust frontend metrics middleware (unauthenticated denial of service) — vllm 5.9 Medium 2026-10-05
CVE-2026-105749 Docling: Unbounded table rowspan/colspan in HTML, JATS, ODS and BoxNote backends causes CPU/memory exhaustion — docling 6.5 Medium 2026-10-05
CVE-2026-104861 probe-image-size: Quadratic-time Denial of Service in the SVG Parser — probe-image-size 7.5 High 2026-10-02
CVE-2026-104844 PostCSS: Quadratic complexity in flat selector parsing allows CPU exhaustion — postcss-selector-parser 5.9 Medium 2026-10-02
CVE-2026-95512 Freetype: freetype: denial of service via repeated subroutine allocations in cid font loader — Red Hat Hardened Images 5.5 Medium 2026-10-02
CVE-2026-103760 Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon Response Write — Mooncake 5.9 Medium 2026-10-01
CVE-2026-86344 389-ds-base: 389-ds-base: unauthenticated worker-thread-pool exhaustion via completed-operation-then-incomplete-pdu connection requeue — Red Hat Directory Server 11 7.5 High 2026-10-01
CVE-2026-103000 pypdf: Possible large memory usage when retrieving alphabetical page labels — pypdf 8.7 High 2026-09-30
CVE-2026-102999 pypdf: Possible long runtimes with large amount of embedded files — pypdf 8.7 High 2026-09-30
CVE-2026-102998 pypdf: Possible long runtimes when generating appearance streams — pypdf 8.7 High 2026-09-30
CVE-2026-102997 pypdf: Possible long runtimes for partially malformed FlateDecode streams (Follow-up) — pypdf 8.7 High 2026-09-30
CVE-2026-102996 pypdf: Possible large memory usage when parsing font data — pypdf 8.7 High 2026-09-30
CVE-2026-102995 pypdf: Possible large memory usage for large /ToUnicode streams (Follow-up 2) — pypdf 8.7 High 2026-09-30
CVE-2026-102994 pypdf: Possible long runtimes/large memory usage when parsing indirect objects — pypdf 8.7 High 2026-09-30
CVE-2026-102993 pypdf: Possible large memory usage when retrieving Roman page labels — pypdf 8.7 High 2026-09-30
CVE-2026-47568 NVIDIA Linux驱动内核层日志洪泛致拒绝服务漏洞 — GeForce 5.5 Medium 2026-09-30
CVE-2026-47567 NVIDIA Linux驱动DRM VMA耗尽致拒绝服务 — GeForce 5.5 Medium 2026-09-30
CVE-2026-86104 Fireware OS Resource Exhaustion in Login Process Allows Denial of Service — Fireware OS 8.7 High 2026-09-29
CVE-2026-18105 Fireware OS Uncontrolled Resource Consumption in Diagnostic Tasks Allows Denial of Service — Fireware OS 7.1 High 2026-09-29
CVE-2026-102821 Russh: Unbounded memory exhaustion via CHANNEL_OPEN flood during a client-stalled rekey — russh 6.5 Medium 2026-09-29
CVE-2026-102414 pbkdf2 rehashes long passwords on every iteration, enabling denial of service — pbkdf2 3.7 Low 2026-09-29
CVE-2026-102278 brace-expansion: DoS via uncontrolled recursion on nested brace groups causing stack exhaustion — brace-expansion 7.5 High 2026-09-28
CVE-2026-102277 brace-expansion: Quadratic-time expansion of the `{a},b}` rewrite causes CPU denial of service — brace-expansion 5.3 Medium 2026-09-28
CVE-2026-102276 brace-expansion: DoS via uncontrolled recursion in parseCommaParts causing stack exhaustion — brace-expansion 7.5 High 2026-09-28
CVE-2026-101911 ip-address: Address6 builds a parse diagnostic proportional to the input with no length bound, allowing a single long string to stall or crash the process — ip-address 6.3 Medium 2026-09-28
CVE-2026-101906 Axios: ReDoS (O(N²)) in shouldBypassProxy host normalization, reachable via untrusted redirect Location — axios 8.2 High 2026-09-28
CVE-2026-101901 Axios: Denial of Service via Unhandled 'error' Event in HTTP/2 ClientHttp2Session Initialization — axios 8.2 High 2026-09-28
CVE-2026-101098 ag-ui-protocol ag-ui HTTP JdkAgentHttpHandler.java readAllBytes resource consumption — ag-ui 4.3 Medium 2026-09-28
CVE-2026-94408 Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service — Elasticsearch 4.9 Medium 2026-09-26
CVE-2026-94397 Uncontrolled Resource Consumption in Elasticsearch Leading to denial of service — Elasticsearch 6.5 Medium 2026-09-26

Vulnerabilities classified as CWE-400 (未加控制的资源消耗(资源穷尽)) represent 2079 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.