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.
6465 vulnerabilities reference this CWE, most recent first.
CVE-2026-57080 (GCVE-0-2026-57080)
Vulnerability from cvelistv5 – Published: 2026-06-30 11:04 – Updated: 2026-07-20 06:42
VLAI
EPSS
VEX
Title
Net::BitTorrent versions through 2.1.0 for Perl allow remote memory exhaustion via an uncapped peer-wire message-length prefix
Summary
Net::BitTorrent versions through 2.1.0 for Perl allow remote memory exhaustion via an uncapped peer-wire message-length prefix.
The peer-wire framing in _process_messages trusts the 4-byte length prefix sent by a connected peer with no upper bound, while receive_data appends every inbound byte to the input buffer. A peer announces a length prefix of up to about 4 GiB and then streams bytes; the decoder waits until the buffer holds the full message before processing it, so the buffer grows without limit.
Peer connections are unauthenticated, so any peer in the swarm exhausts the downloading process's memory. The largest legitimate message is a 16 KiB piece block, so any announced length far above that is anomalous.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 13:48 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/sanko/Net-BitTorrent.pm/securi… | vendor-advisory |
| https://metacpan.org/release/SANKO/Net-BitTorrent… | release-notes |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SANKO | Net::BitTorrent |
Affected:
0 , ≤ 2.1.0
(custom)
|
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CVE-2026-56846 (GCVE-0-2026-56846)
Vulnerability from cvelistv5 – Published: 2026-08-04 00:49 – Updated: 2026-08-04 15:03
VLAI
EPSS
VEX
Summary
A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion.
This vulnerability affects Node.js **24.x** and **22.x**.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 14:28 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
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CVE-2026-56819 (GCVE-0-2026-56819)
Vulnerability from cvelistv5 – Published: 2026-07-21 22:11 – Updated: 2026-07-23 13:55
VLAI
EPSS
VEX
Title
Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel is already closed (Direct memory leak / OOM DoS)
Summary
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can leak one direct `ByteBuf` per HTTP/2 `DATA` frame in applications that enable HTTP/2 content decompression via `DelegatingDecompressorFrameListener`. When a `DATA` frame is processed for a stream whose decompressor has already been closed, `Http2Decompressor.decompress(...)` calls `decompressor.writeInbound(data.retain())` and does not release the retained buffer on the error path, eventually exhausting direct memory and crashing the JVM. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 13:55 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/commit/bb2ff68a1fb… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-56816 (GCVE-0-2026-56816)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:56 – Updated: 2026-07-22 18:24
VLAI
EPSS
VEX
Title
Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types
Summary
Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's `Http3FrameCodec` buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; `decodeFrame` trusts `payLoadLength`, allowing an attacker to open multiple QUIC streams and send reserved frames with very large payload lengths to cause memory exhaustion and denial of service. This issue is fixed in version 4.2.16.Final.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:21 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
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CVE-2026-56745 (GCVE-0-2026-56745)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:31 – Updated: 2026-07-22 15:30
VLAI
EPSS
VEX
Title
Netty SpdyHttpDecoder: ByteBuf Reference Leak on RST_STREAM Leads to Native Memory Exhaustion
Summary
Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, the `SpdyHttpDecoder` handler in Netty's SPDY-to-HTTP codec allocates a pooled `ByteBuf` when processing a client-initiated `SYN_STREAM` frame with `FLAG_FIN=0` and stores the partially constructed `FullHttpRequest` in `messageMap`; when the remote peer sends `RST_STREAM` for that stream or the accumulated content exceeds `maxContentLength`, the decoder removes the entry but does not release the pooled `ByteBuf`, causing native memory exhaustion. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 15:30 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/commit/5b68c61f37a… | x_refsource_MISC |
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| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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CVE-2026-56741 (GCVE-0-2026-56741)
Vulnerability from cvelistv5 – Published: 2026-07-17 21:15 – Updated: 2026-07-20 15:21
VLAI
EPSS
VEX
Title
JLine: Unauthenticated Remote DoS via Unbounded Telnet NAWS Terminal Geometry
Summary
JLine is a Java library for handling console input. Prior to 3.30.14, 4.0.16, and 4.2.1, the JLine3 Telnet server remote-telnet module does not apply an upper bound to terminal dimensions received via the Telnet NAWS option, and TelnetIO.handleNAWS() in TelnetIO.java:856-879 reads client-supplied width and height as 16-bit unsigned integers and passes values such as 65535x65535 to setTerminalGeometry(), allowing an unauthenticated remote attacker to repeatedly alternate values and trigger continuous expensive rendering work that causes CPU exhaustion and denial of service. This issue is fixed in versions 3.30.14, 4.0.16, and 4.2.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 15:21 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/jline/jline3/security/advisori… | x_refsource_CONFIRM |
| https://github.com/jline/jline3/pull/2000 | x_refsource_MISC |
| https://github.com/jline/jline3/commit/3ea9cad869… | x_refsource_MISC |
| https://github.com/jline/jline3/commit/733eb353dc… | x_refsource_MISC |
| https://github.com/jline/jline3/commit/86b7ba7801… | x_refsource_MISC |
| https://github.com/jline/jline3/releases/tag/4.0.16 | x_refsource_MISC |
| https://github.com/jline/jline3/releases/tag/4.2.1 | x_refsource_MISC |
Impacted products
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CVE-2026-56740 (GCVE-0-2026-56740)
Vulnerability from cvelistv5 – Published: 2026-07-17 21:17 – Updated: 2026-07-20 13:58
VLAI
EPSS
VEX
Title
JLine: Unauthenticated Remote Memory Exhaustion via Unbounded Telnet NEW-ENVIRON Variables
Summary
JLine is a Java library for handling console input. Prior to 3.30.14, 4.0.16, and 4.2.1, the JLine3 Telnet server remote-telnet module does not limit the number of environment variables a client may inject via the Telnet NEW-ENVIRON option, and TelnetIO.readNEVariables() in TelnetIO.java:1127-1180 stores each variable pair in a HashMap held by ConnectionData, allowing an unauthenticated attacker to flood unique variable pairs before the terminating IAC SE byte and exhaust JVM heap memory with an OutOfMemoryError. This issue is fixed in versions 3.30.14, 4.0.16, and 4.2.1.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 13:57 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://github.com/jline/jline3/security/advisori… | x_refsource_CONFIRM |
| https://github.com/jline/jline3/pull/2000 | x_refsource_MISC |
| https://github.com/jline/jline3/pull/2001 | x_refsource_MISC |
| https://github.com/jline/jline3/commit/0389f0ee6d… | x_refsource_MISC |
| https://github.com/jline/jline3/commit/4ee3a73849… | x_refsource_MISC |
| https://github.com/jline/jline3/commit/934f09e612… | x_refsource_MISC |
| https://github.com/jline/jline3/releases/tag/4.0.16 | x_refsource_MISC |
| https://github.com/jline/jline3/releases/tag/4.2.1 | x_refsource_MISC |
| https://github.com/jline/jline3/releases/tag/jlin… | x_refsource_MISC |
Impacted products
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CVE-2026-56725 (GCVE-0-2026-56725)
Vulnerability from cvelistv5 – Published: 2026-09-25 17:09 – Updated: 2026-09-29 19:37
VLAI
EPSS
VEX
Title
Zammad: Denial of Service via OTRS Import Controller
Summary
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary An unauthenticated request to POST /api/v1/import/otrs/import_check blocks a Zammad request worker for roughly two minutes. The import_check and import_status actions are missing the setup_done_response guard that other actions in the same controller carry, so they execute on fully set-up production instances. The action enters a retry loop against a blank OTRS endpoint, sleeping for 30 s + 45 s between attempts. Impact An unauthenticated remote attacker denies service to a production Zammad instance. Each request costs almost nothing and forces ~115 seconds of server-side blocking. A few requests per second saturate the Puma worker pool. The condition persists as long as the traffic continues. No account, valid import configuration, or target knowledge beyond the hostname is needed. CSRF token is trivially obtained from any prior GET response. This issue is fixed in version 7.0.2.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 19:37 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/zammad/zammad/security/advisor… | x_refsource_CONFIRM |
| https://github.com/zammad/zammad/commit/a04a95b69… | x_refsource_MISC |
| https://github.com/zammad/zammad/releases/tag/7.0.2 | x_refsource_MISC |
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CVE-2026-56248 (GCVE-0-2026-56248)
Vulnerability from cvelistv5 – Published: 2026-06-23 12:12 – Updated: 2026-06-23 13:25
VLAI
EPSS
VEX
Title
Capgo - Unauthenticated Denial-of-Service via audit_logs RLS Policy
Summary
Cap-go capgo (capgo-backend) before 12.128.12 contains an unauthenticated denial-of-service vulnerability arising from the audit_logs table's Row-Level Security (RLS) policy when accessed via the Supabase PostgREST API. Because the PostgreSQL query planner executes costly logic before RLS rejection, unfiltered queries to the public.audit_logs endpoint using the public anon key consistently trigger statement timeouts (PostgREST error 57014). Under concurrency, this exhausts database resources and causes cascading HTTP 500 failures on unrelated endpoints (e.g. /orgs), resulting in an application-layer denial of service.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 13:24 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-unauth… | third-party-advisory |
Impacted products
Date Public
2026-05-08 00:00
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CVE-2026-56145 (GCVE-0-2026-56145)
Vulnerability from cvelistv5 – Published: 2026-07-21 20:04 – Updated: 2026-07-22 18:25
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service
Summary
Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user with permission to execute EQL sequence queries against an index they control can send a specially crafted query that triggers excessive memory consumption, causing the Elasticsearch node to crash.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:13 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elasticsearch |
Affected:
9.4.0 , ≤ 9.4.3
(semver)
Affected: 8.0.0 , ≤ 8.19.17 (semver) Affected: 9.0.0 , ≤ 9.3.6 (semver) |
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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.