Common Weakness Enumeration
CWE-400
DiscouragedUncontrolled Resource Consumption
Abstraction: Class · Status: Draft
The product does not properly control the allocation and maintenance of a limited resource.
5423 vulnerabilities reference this CWE, most recent first.
CVE-2026-21435 (GCVE-0-2026-21435)
Vulnerability from cvelistv5 – Published: 2026-02-12 18:22 – Updated: 2026-02-17 15:36
VLAI
EPSS
VEX
Title
webtransport-go CloseWithError can block indefinitely
Summary
webtransport-go is an implementation of the WebTransport protocol. Prior to v0.10.0, an attacker can cause a denial of service in webtransport-go by preventing or indefinitely delaying WebTransport session closure. A malicious peer can withhold QUIC flow control credit on the CONNECT stream, blocking transmission of the WT_CLOSE_SESSION capsule and causing the close operation to hang. This vulnerability is fixed in v0.10.0.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/quic-go/webtransport-go/securi… | x_refsource_CONFIRM |
| https://github.com/quic-go/webtransport-go/releas… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| quic-go | webtransport-go |
Affected:
< 0.10.0
|
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CVE-2026-20188 (GCVE-0-2026-20188)
Vulnerability from cvelistv5 – Published: 2026-05-06 16:15 – Updated: 2026-05-14 16:30
VLAI
EPSS
VEX
Title
Cisco Crosswork Network Controller and Cisco Network Services Orchestrator Advisory
Summary
Following the initial publication of the Security Advisory about a denial of service (DoS) condition in Cisco Crosswork Network Controller and Cisco Network Services Orchestrator (NSO), additional information has been made available to the Cisco Product Security Incident Response Team (PSIRT).
Upon further analysis, the Cisco PSIRT has reclassified this issue as a customer-configurable, resource management issue rather than a security vulnerability.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Crosswork Network Change Automation |
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CVE-2026-20139 (GCVE-0-2026-20139)
Vulnerability from cvelistv5 – Published: 2026-02-18 16:45 – Updated: 2026-02-19 19:28
VLAI
EPSS
VEX
Title
Client-Side Denial of Service (DoS) through ''/splunkd/__raw/services/authentication/users/username'' REST API endpoint in Splunk Enterprise
Summary
In Splunk Enterprise versions below 10.2.0, 10.0.2, 9.4.8, 9.3.9, and 9.2.12, and Splunk Cloud Platform versions below 10.2.2510.3, 10.1.2507.8, 10.0.2503.9, and 9.3.2411.121, a low-privileged user that does not hold the "admin" or "power" Splunk roles could craft a malicious payload into the `realname`, `tz`, or `email` parameters of the `/splunkd/__raw/services/authentication/users/username` REST API endpoint when they change a password. This could potentially lead to a client‑side denial‑of‑service (DoS). The malicious payload might significantly slow page load times or render Splunk Web temporarily unresponsive.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Splunk | Splunk Enterprise |
Affected:
10.0 , < 10.0.2
(custom)
Affected: 9.4 , < 9.4.8 (custom) Affected: 9.3 , < 9.3.9 (custom) Affected: 9.2 , < 9.2.12 (custom) |
|
| Splunk | Splunk Cloud Platform |
Affected:
10.2.2510 , < 10.2.2510.3
(custom)
Affected: 10.1.2507 , < 10.1.2507.8 (custom) Affected: 10.0.2503 , < 10.0.2503.9 (custom) Affected: 9.3.2411 , < 9.3.2411.121 (custom) |
Date Public
2026-02-18 00:00
Credits
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CVE-2026-20084 (GCVE-0-2026-20084)
Vulnerability from cvelistv5 – Published: 2026-03-25 16:02 – Updated: 2026-03-26 17:35
VLAI
EPSS
VEX
Summary
A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause BOOTP packets to be forwarded between VLANs, resulting in a denial of service (DoS) condition.
This vulnerability is due to improper handling of BOOTP packets on Cisco Catalyst 9000 Series Switches. An attacker could exploit this vulnerability by sending BOOTP request packets to an affected device. A successful exploit could allow an attacker to forward BOOTP packets from one VLAN to another, resulting in BOOTP VLAN leakage and potentially leading to high CPU utilization. This makes the device unreachable (either through console or remote management) and unable to forward traffic, resulting in a DoS condition.
Note: This vulnerability can be exploited with either unicast or broadcast BOOTP packets.
There are workarounds that address this vulnerability.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco IOS XE Software |
Affected:
16.6.1
Affected: 16.6.2 Affected: 16.6.3 Affected: 16.6.4 Affected: 16.6.5 Affected: 16.6.4a Affected: 16.6.6 Affected: 16.6.7 Affected: 16.6.8 Affected: 16.6.9 Affected: 16.6.10 Affected: 16.7.1 Affected: 16.8.1 Affected: 16.8.1a Affected: 16.8.1s Affected: 16.9.1 Affected: 16.9.2 Affected: 16.9.1s Affected: 16.9.3 Affected: 16.9.4 Affected: 16.9.5 Affected: 16.9.6 Affected: 16.9.7 Affected: 16.9.8 Affected: 16.10.1 Affected: 16.10.1s Affected: 16.10.1e Affected: 16.11.1 Affected: 16.11.1b Affected: 16.11.1s Affected: 16.12.1 Affected: 16.12.1s Affected: 16.12.1c Affected: 16.12.2 Affected: 16.12.3 Affected: 16.12.8 Affected: 16.12.2s Affected: 16.12.4 Affected: 16.12.3s Affected: 16.12.3a Affected: 16.12.4a Affected: 16.12.5 Affected: 16.12.6 Affected: 16.12.5b Affected: 16.12.6a Affected: 16.12.7 Affected: 17.1.1 Affected: 17.1.1s Affected: 17.1.1t Affected: 17.1.3 Affected: 17.2.1 Affected: 17.2.1a Affected: 17.3.1 Affected: 17.3.2 Affected: 17.3.3 Affected: 17.3.2a Affected: 17.3.4 Affected: 17.3.5 Affected: 17.3.6 Affected: 17.3.7 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.4.1 Affected: 17.5.1 Affected: 17.6.1 Affected: 17.6.2 Affected: 17.6.3 Affected: 17.6.1y Affected: 17.6.4 Affected: 17.6.5 Affected: 17.6.6 Affected: 17.6.6a Affected: 17.6.5a Affected: 17.6.7 Affected: 17.6.8 Affected: 17.7.1 Affected: 17.10.1 Affected: 17.10.1b Affected: 17.8.1 Affected: 17.9.1 Affected: 17.9.2 Affected: 17.9.3 Affected: 17.9.4 Affected: 17.9.5 Affected: 17.9.4a Affected: 17.9.6 Affected: 17.9.6a Affected: 17.9.7 Affected: 17.9.8 Affected: 17.11.1 Affected: 17.12.1 Affected: 17.12.2 Affected: 17.12.3 Affected: 17.12.4 Affected: 17.12.5 Affected: 17.12.1z5 Affected: 17.13.1 Affected: 17.14.1 Affected: 17.15.1 Affected: 17.15.2 Affected: 17.15.3 Affected: 17.15.2b Affected: 17.15.4 Affected: 17.15.4d Affected: 17.16.1 Affected: 17.17.1 Affected: 17.18.1 |
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CVE-2026-20080 (GCVE-0-2026-20080)
Vulnerability from cvelistv5 – Published: 2026-01-21 16:26 – Updated: 2026-01-21 16:47
VLAI
EPSS
VEX
Title
Cisco IEC6400 Edge Compute Appliance SSH Denial of Service Vulnerability
Summary
A vulnerability in the SSH service of Cisco IEC6400 Wireless Backhaul Edge Compute Software could allow an unauthenticated, remote attacker to cause the SSH service to stop responding.
This vulnerability exists because the SSH service lacks effective flood protection. An attacker could exploit this vulnerability by initiating a denial of service (DoS) attack against the SSH port. A successful exploit could allow the attacker to cause the SSH service to be unresponsive during the period of the DoS attack. All other operations remain stable during the attack.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Ultra-Reliable Wireless Backhaul |
Affected:
1.0.0
Affected: 1.1.0 Affected: 1.0.2 Affected: 1.0.1 |
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CVE-2026-20066 (GCVE-0-2026-20066)
Vulnerability from cvelistv5 – Published: 2026-03-04 17:49 – Updated: 2026-03-04 20:46
VLAI
EPSS
VEX
Title
Multiple Cisco Products Snort 3 TBD Denial of Service Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.
This vulnerability is due to an error in the JSTokenizer normalization logic when the HTTP inspection normalizes JavaScript. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection that is parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine restarts unexpectedly. JSTokenizer is not enabled by default.
Severity
5.8 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Threat Defense (FTD) Software |
Affected:
7.4.0
Affected: 7.4.1 Affected: 7.4.1.1 Affected: 7.6.0 Affected: 7.4.2 Affected: 7.4.2.1 Affected: 7.7.0 Affected: 7.4.2.2 Affected: 7.6.1 Affected: 7.4.2.3 Affected: 7.6.2 Affected: 7.7.10 Affected: 7.6.2.1 Affected: 7.7.10.1 Affected: 7.4.2.4 Affected: 7.4.3 |
|
| Cisco | Cisco UTD SNORT IPS Engine Software |
Affected:
17.3.1a
Affected: 17.2.1r Affected: 17.3.2 Affected: 17.4.1a Affected: 17.5.1 Affected: 17.3.3 Affected: 17.5.1a Affected: 17.3.4 Affected: 17.3.4a Affected: 17.4.2 Affected: 17.4.1b Affected: 17.6.1a Affected: 17.7.1a Affected: 17.6.2 Affected: 17.8.1a Affected: 17.3.5 Affected: 17.6.3 Affected: 17.6.3a Affected: 17.7.2 Affected: 17.9.1a Affected: 17.6.4 Affected: 17.10.1a Affected: 17.3.6 Affected: 17.3.7 Affected: 17.9.2a Affected: 17.6.5 Affected: 17.11.1a Affected: 17.9.3a Affected: 17.12.1a Affected: 17.9.4 Affected: 17.6.6 Affected: 17.3.8 Affected: 17.3.8a Affected: 17.6.6a Affected: 17.9.4a Affected: 17.12.2 Affected: 17.13.1a Affected: 17.9.5a Affected: 17.12.3 Affected: 17.6.7 Affected: 17.14.1a Affected: 17.12.4 Affected: 17.12.3a Affected: 17.15.1a Affected: 17.6.8 Affected: 17.9.6 Affected: 17.6.8a Affected: 17.16.1a Affected: 17.9.5e Affected: 17.12.4a Affected: 17.15.2c Affected: 17.9.5f Affected: 17.12.4b Affected: 17.15.2a Affected: 17.12.5 Affected: 17.17.1 Affected: 17.12.5a Affected: 17.9.7a Affected: 17.15.3a Affected: 17.15.3 Affected: 17.12.5b Affected: 17.12.5c Affected: 17.15.4 Affected: 17.9.7b Affected: 17.18.1 Affected: 17.18.1a Affected: 17.12.6 Affected: 17.9.8 Affected: 17.15.4c Affected: 17.12.5d Affected: 17.18.2 |
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CVE-2026-15308 (GCVE-0-2026-15308)
Vulnerability from cvelistv5 – Published: 2026-07-09 17:10 – Updated: 2026-07-09 19:32
VLAI
EPSS
VEX
Title
Incremental HTMLParser feed() allows CPU-exhaustion DoS via repeated unterminated markup declarations
Summary
The incremental HTML parser (html.parser.HTMLParser) allows for CPU
denial-of-service through repeated unterminated markup declarations when
processing uncontrolled data.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
8 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Python Software Foundation | CPython |
Affected:
0 , < 3.15.0
(python)
|
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CVE-2026-14684 (GCVE-0-2026-14684)
Vulnerability from cvelistv5 – Published: 2026-07-04 23:30 – Updated: 2026-07-16 07:18 Disputed
VLAI
EPSS
VEX
Title
HdrHistogram AbstractHistogram.java memory allocation
Summary
A flaw has been found in HdrHistogram up to 2.2.2. This affects the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. This manipulation of the argument numberOfSignificantValueDigits causes uncontrolled memory allocation. The attack can only be executed locally. The exploit has been published and may be used. The actual existence of this vulnerability is currently in question. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/376280 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/376280/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-14684 | third-party-advisory |
| https://vuldb.com/submit/846754 | third-party-advisory |
| https://github.com/HdrHistogram/HdrHistogram/issues/220 | exploitissue-tracking |
| https://github.com/HdrHistogram/HdrHistogram/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | HdrHistogram |
Affected:
2.2.0
Affected: 2.2.1 Affected: 2.2.2 cpe:2.3:a:hdrhistogram:hdrhistogram:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-14683 (GCVE-0-2026-14683)
Vulnerability from cvelistv5 – Published: 2026-07-04 23:00 – Updated: 2026-07-16 07:18 Disputed
VLAI
EPSS
VEX
Title
HdrHistogram AbstractHistogram.java memory allocation
Summary
A vulnerability was detected in HdrHistogram up to 2.2.2. Affected by this issue is the function org.HdrHistogram.AbstractHistogram.decodeFromCompressedByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. The manipulation of the argument lengthOfCompressedContents results in uncontrolled memory allocation. The attack needs to be approached locally. The exploit is now public and may be used. It is still unclear if this vulnerability genuinely exists. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/376279 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/376279/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-14683 | third-party-advisory |
| https://vuldb.com/submit/846750 | third-party-advisory |
| https://vuldb.com/submit/846752 | third-party-advisory |
| https://github.com/HdrHistogram/HdrHistogram/issues/219 | exploitissue-tracking |
| https://github.com/HdrHistogram/HdrHistogram/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | HdrHistogram |
Affected:
2.2.0
Affected: 2.2.1 Affected: 2.2.2 cpe:2.3:a:hdrhistogram:hdrhistogram:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-13149 (GCVE-0-2026-13149)
Vulnerability from cvelistv5 – Published: 2026-06-30 08:30 – Updated: 2026-07-08 11:38
VLAI
EPSS
VEX
Summary
brace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| juliangruber | brace-expansion |
Affected:
0 , ≤ 5.0.6
(semver)
|
Credits
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{
"url": "https://www.npmjs.com/package/brace-expansion"
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Mitigation
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.
Mitigation
Architecture and Design
- Mitigation of resource exhaustion attacks requires that the target system either:
- 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.
- 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.
Mitigation
Architecture and Design
Ensure that protocols have specific limits of scale placed on them.
Mitigation
Implementation
Ensure that all failures in resource allocation place the system into a safe posture.
CAPEC-147: XML Ping of the Death
An attacker initiates a resource depletion attack where a large number of small XML messages are delivered at a sufficiently rapid rate to cause a denial of service or crash of the target. Transactions such as repetitive SOAP transactions can deplete resources faster than a simple flooding attack because of the additional resources used by the SOAP protocol and the resources necessary to process SOAP messages. The transactions used are immaterial as long as they cause resource utilization on the target. In other words, this is a normal flooding attack augmented by using messages that will require extra processing on the target.
CAPEC-227: Sustained Client Engagement
An adversary attempts to deny legitimate users access to a resource by continually engaging a specific resource in an attempt to keep the resource tied up as long as possible. The adversary's primary goal is not to crash or flood the target, which would alert defenders; rather it is to repeatedly perform actions or abuse algorithmic flaws such that a given resource is tied up and not available to a legitimate user. By carefully crafting a requests that keep the resource engaged through what is seemingly benign requests, legitimate users are limited or completely denied access to the resource.
CAPEC-492: Regular Expression Exponential Blowup
An adversary may execute an attack on a program that uses a poor Regular Expression(Regex) implementation by choosing input that results in an extreme situation for the Regex. A typical extreme situation operates at exponential time compared to the input size. This is due to most implementations using a Nondeterministic Finite Automaton(NFA) state machine to be built by the Regex algorithm since NFA allows backtracking and thus more complex regular expressions.