Weakness (CWE)
CWE-770: Allocation of Resources Without Limits or Throttling
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.
How to prevent it (8 mitigations)
-
Requirements
Clearly specify the minimum and maximum expectations for capabilities, and dictate which behaviors are acceptable when resource allocation reaches limits.
-
Architecture and Design
Limit 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 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, and it will help the administrator to identify who is committing the abuse. 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.
-
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.
-
Architecture and Design
For 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.
-
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, typically by using increasing time delays
- 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 can be difficult to effectively institute -- and even when properly done, it does not provide a full solution. It simply requires more resources on the part of the attacker.
-
Architecture and Design
Ensure that protocols have specific limits of scale placed on them.
-
Architecture and Design, Implementation
If the program must fail, ensure that it fails gracefully (fails closed). There may be a temptation to simply let the program fail poorly in cases such as low memory conditions, but an attacker may be able to assert control before the software has fully exited. Alternately, an uncontrolled failure could cause cascading problems with other downstream components; for example, the program could send a signal to a downstream process so the process immediately knows that a problem has occurred and has a better chance of recovery.
Ensure that all failures in resource allocation place the system into a safe posture.
Source: MITRE CWE-770
1,166 results · Clear filters · Feed
-
High 7.5
aSc TimeTables 2021.6.2 - Denial of Service
aSc TimeTables 2021.6.2 contains a denial of service vulnerability that allows attackers to crash the application by overwriting subject title fields with excessive data. Attackers can generate a 10,000-character buffer and paste it into the subject title to …
-
High 7.5
Suricata dnp3: unbounded transaction growth
Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, specially crafted traffic can cause Suricata to consume large amounts of memory while parsing DNP3 traffic. This can lead to the process slowing down and running out of memory,…
-
High 7.5
Suricata DCERPC: unbounded fragment buffering leads to memory exhaustion
Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, crafted DCERPC traffic can cause Suricata to expand a buffer w/o limits, leading to memory exhaustion and the process getting killed. While reported for DCERPC over UDP, it is …
-
High 7.7
Kyverno Denial of Service via Context Variable Amplification in Policy Engine
Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno's policy engine that allows users with policy creation privileges to cause denial of service by c…
-
High 8.7
A denial-of-service vulnerability exists in the NetX IPv6 component functionality of Eclipse ThreadX NetX Duo. A specia…
-
High 7.5
TapinRadio 2.13.7 - Denial of Service
TapinRadio 2.13.7 contains a denial of service vulnerability in the application proxy settings that allows attackers to crash the program by overflowing input fields. Attackers can paste a large buffer of 20,000 characters into the username and address fields…
-
High 7.5
SyncBreeze 10.0.28 - 'login' Denial of Service
SyncBreeze 10.0.28 contains a denial of service vulnerability in the login endpoint that allows remote attackers to crash the service. Attackers can send an oversized payload in the login request to overwhelm the application and potentially disrupt service av…
-
High 7.5
Nsauditor 3.2.2.0 - 'Event Description' Denial of Service
Nsauditor 3.2.2.0 contains a denial of service vulnerability that allows attackers to crash the application by overwriting the Event Description field with a large buffer. Attackers can generate a 10,000-character 'U' buffer and paste it into the Event Descri…
-
High 7.5
Managed Switch Port Mapping Tool 2.85.2 - Denial of Service
Managed Switch Port Mapping Tool 2.85.2 contains a denial of service vulnerability that allows attackers to crash the application by creating an oversized buffer. Attackers can generate a 10,000-character buffer and paste it into the IP Address and SNMP Commu…
-
High 7.5
AgataSoft PingMaster Pro 2.1 - Denial of Service
AgataSoft PingMaster Pro 2.1 contains a denial of service vulnerability in the Trace Route feature that allows attackers to crash the application by overflowing the host name input field. Attackers can generate a 10,000-character buffer and paste it into the …
-
High 7.5
Allocation of Resources Without Limits or Throttling in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.9 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2 that could have allowed an unauthenticated user to create a denial of service condition by sending crafted requests with …
-
High 7.5
Seroval affected by Denial of Service via Deeply Nested Objects
Seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, serialization of objects with extreme depth can exceed the maximum call stack limit. In version 1.4.1, Seroval introduc…
-
High 7.5
Mastodon vulnerable to Denial of Service from a single post (client/server)
Mastodon is a free, open-source social network server based on ActivityPub. Mastodon versions before v4.3.18, v4.4.12, and v4.5.5 do not have a limit on the maximum number of poll options for remote posts, allowing attackers to create polls with a very large …
-
High 7.5
seroval is vulnerable to Denial of Service via array serialization
seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, overriding encoded array lengths by replacing them with an excessively large value causes the deserialization process t…
-
High 7.5CVE-2025-67221 Public exploit
orjson does not limit recursion for deeply nested JSON documents
The orjson.dumps function in orjson thru 3.11.4 does not limit recursion for deeply nested JSON documents.
-
High 7.4
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 is an EV charging software stack. Prior to version 2025.10.0, once the module receives a SDP request, it creates a whole new set of objects like `Session`, `IConnection` which open new TCP socket for the ISO15118-20 communications and registers callba…
-
High 7.5
GeoGebra Graphing Calculator 6.0.631.0 - Denial Of Service
GeoGebra Graphing Calculator 6.0.631.0 contains a denial of service vulnerability that allows attackers to crash the application by inputting an oversized buffer. Attackers can generate a payload of 8000 repeated characters to overwhelm the input field and ca…
-
High 7.5
GeoGebra Classic 5.0.631.0-d - Denial of Service
GeoGebra Classic 5.0.631.0-d contains a denial of service vulnerability in the input field that allows attackers to crash the application by sending oversized buffer content. Attackers can generate a large buffer of 800,000 repeated characters and paste it in…
-
High 7.5
ProFTPD 1.3.7a - Remote Denial of Service
ProFTPD 1.3.7a contains a denial of service vulnerability that allows attackers to overwhelm the server by creating multiple simultaneous FTP connections. Attackers can repeatedly establish connections using threading to exhaust server connection limits and b…
-
High 7.4
EVerest's unlimited connections can lead to DoS through operating system resource exhaustion
EVerest is an EV charging software stack. In versions 2025.9.0 and below, an attacker can exhaust the operating system's memory and cause the module to terminate by initiating an unlimited number of TCP connections that never proceed to ISO 15118-2 communicat…
-
High 8.3
Endless reprocessing/reupload of activity log data due to SQLite max parameters limit not being considered
Wings is the server control plane for Pterodactyl, a free, open-source game server management panel. Starting in version 1.7.0 and prior to version 1.12.0, Wings does not consider SQLite max parameter limit when processing activity log entries allowing for lo…
-
High 8.3
Pterodactyl Wings's websocket endpoints have no visible rate limits or monitoring, allowing for DOS attacks under certain circumstances
Wings is the server control plane for Pterodactyl, a free, open-source game server management panel. Prior to version 1.12.0, websockets within wings lack proper rate limiting and throttling. As a result a malicious user can open a large number of connections…
-
High 7.5
pyasn1 has a DoS vulnerability in decoder
pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.
-
High 7.5
Telegram Desktop 2.9.2 - Denial of Service (PoC)
Telegram Desktop 2.9.2 contains a denial of service vulnerability that allows attackers to crash the application by sending an oversized message payload. Attackers can generate a 9 million byte buffer and paste it into the messaging interface to trigger an ap…
-
High 7.5
SmartFTP Client 10.0.2909.0 - 'Multiple' Denial of Service
SmartFTP Client 10.0.2909.0 contains multiple denial of service vulnerabilities that allow attackers to crash the application through specific input manipulation. Attackers can trigger crashes by entering malformed paths, using invalid IP addresses, or cleari…
-
High 7.5
Cyberfox Web Browser 52.9.1 - Denial of Service (PoC)
Cyberfox Web Browser 52.9.1 contains a denial of service vulnerability that allows attackers to crash the application by overflowing the search bar with excessive data. Attackers can generate a 9,000,000 byte payload and paste it into the search bar to trigge…
-
High 7.5
AWebServer GhostBuilding 18 - Denial of Service (DoS)
AWebServer GhostBuilding 18 contains a denial of service vulnerability that allows remote attackers to overwhelm the server by sending multiple concurrent HTTP requests. Attackers can generate high-volume requests to multiple endpoints including /mysqladmin t…
-
High 7.1CVE-2026-0897 Public exploit
Denial of Service in Keras via Excessive Memory Allocation in HDF5 Metadata
Allocation of Resources Without Limits or Throttling in the HDF5 weight loading component in Google Keras 3.0.0 through 3.13.0 on all platforms allows a remote attacker to cause a Denial of Service (DoS) through memory exhaustion and a crash of the Python int…
-
High 7.5
Unexpected shutdown in HPE Instant On Access Points after processing specific packets
A vulnerability affecting HPE Networking Instant On Access Points has been identified where a device processing a specially crafted packet could enter a non-responsive state, in some cases requiring a hard reset to re-establish services. A malicious actor cou…
-
High 8.7
LlamaIndex <= 0.12.2 VannaQueryEngine SQL Execution Allows Resource Exhaustion
LlamaIndex (run-llama/llama_index) versions up to and including 0.12.2 contain an uncontrolled resource consumption vulnerability in the VannaPack VannaQueryEngine implementation. The custom_query() logic generates SQL statements from a user-supplied prompt a…
-
High 7.5
An issue in Technitium DNS Server v.13.5 allows a remote attacker to cause a denial of service via the rate-limiting co…
-
High 7.5
Extreme Networks Aerohive HiveOS <=11.x 11.x Unauthenticated Remote Denial of Service
Aerohive HiveOS contains a denial of service vulnerability in the NetConfig UI that allows unauthenticated attackers to render the web interface unusable. Attackers can send a crafted HTTP request to the action.php5 script with specific parameters to trigger …
-
High 7.0
Unauthenticated Craft CMS users can trigger a database backup
Craft is a platform for creating digital experiences. In versions 5.0.0-RC1 through 5.8.20 and 3.0.0 through 4.16.16, unauthenticated users can trigger database backup operations via specific admin actions, potentially leading to resource exhaustion or inform…
-
High 7.5
AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow a zip bomb to be used to execute a DoS against the AIOHTTP server. An attacker may be able to send a compressed request that when decompressed by A…
-
High —
flagd: Multiple Go Runtime CVEs Impact Security and Availability
### Summary In 2025, several vulnerabilities in the Go Standard Library were disclosed, impacting Go-based applications like flagd (the evaluation engine for OpenFeature). These CVEs primarily focus on Denial of Service (DoS) through resource exhaustion and R…
-
High 7.5
Signal K Server Vulnerable to Denial of Service via Unrestricted Access Request Flooding
Signal K Server is a server application that runs on a central hub in a boat. A Denial of Service (DoS) vulnerability in versions prior to 2.19.0 allows an unauthenticated attacker to crash the SignalK Server by flooding the access request endpoint (`/signalk…
-
High 7.5
Fetch Softworks Fetch FTP Client 5.8.2 Remote CPU Consumption Denial of Service
Fetch FTP Client 5.8.2 contains a denial of service vulnerability that allows attackers to trigger 100% CPU consumption by sending long server responses. Attackers can send specially crafted FTP server responses exceeding 2K bytes to cause excessive resource …
-
High 7.5
SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x ICMP Flood Attack via Network Commands
SOUND4 IMPACT/FIRST/PULSE/Eco versions 2.x contains a network vulnerability that allows unauthenticated attackers to send ICMP signals to arbitrary hosts through network command scripts. Attackers can abuse ping.php, traceroute.php, and dns.php to generate ne…
-
High 7.5
Keycloak: keycloak tls client-initiated renegotiation denial of service
A flaw was found in Keycloak. This vulnerability allows an unauthenticated remote attacker to cause a denial of service (DoS) by repeatedly initiating TLS 1.2 client-initiated renegotiation requests to exhaust server CPU resources, making the service unavaila…
-
High 7.5
Hasura GraphQL 1.3.3 Denial of Service via Malicious GraphQL Query
Hasura GraphQL 1.3.3 contains a denial of service vulnerability that allows attackers to overwhelm the service by crafting malicious GraphQL queries with excessive nested fields. Attackers can send repeated requests with extremely long query strings and multi…