Common Weakness Enumeration

CWE-772

Weakness Allowed

Missing Release of Resource after Effective Lifetime

Abstraction: Base · Status: Draft

The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.

Dimensions

  • Behavior-Type: Release
  • Behavior-Property: Missing
  • Resource-Type: Resource
  • Resource-Property: after Effective Lifetime
Mapping guidance

This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.

Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Relationships and members
ChildOf: CWE-404 · View CWE-1000
ChildOf: CWE-404 · View CWE-1003
ChildOf: CWE-404 · View CWE-1305
ChildOf: CWE-404 · View CWE-1340
Modes of introduction
Implementation
Detection methods

Automated Static Analysis

Automated static analysis, commonly referred to as Static Application Security Testing (SAST), can find some instances of this weakness by analyzing source code (or binary/compiled code) without having to execute it. Typically, this is done by building a model of data flow and control flow, then searching for potentially-vulnerable patterns that connect "sources" (origins of input) with "sinks" (destinations where the data interacts with external components, a lower layer such as the OS, etc.)

Effectiveness: High

Notes

Maintenance

"Resource exhaustion" (CWE-400) is currently treated as a weakness, although it is more like a category of weaknesses that all have the same type of consequence. While this entry treats CWE-400 as a parent in view 1000, the relationship is probably more appropriately described as a chain.

Theoretical

Vulnerability theory is largely about how behaviors and resources interact. "Resource exhaustion" can be regarded as either a consequence or an attack, depending on the perspective. This entry is an attempt to reflect one of the underlying weaknesses that enable these attacks (or consequences) to take place.

Content history
Submission: CWE Content Team · MITRE · 2009-05-13 · CWE 1.4
Modification: CWE Content Team · MITRE · 2010-02-16 · CWE 1.8

updated Demonstrative_Examples, Potential_Mitigations, Relationships

Modification: CWE Content Team · MITRE · 2010-04-05 · CWE 1.8.1

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2010-06-21 · CWE 1.9

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2011-06-01 · CWE 1.13

updated Common_Consequences, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2011-06-27 · CWE 2.0

updated Observed_Examples, Related_Attack_Patterns, Relationships

Modification: CWE Content Team · MITRE · 2011-09-13 · CWE 2.1

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2012-05-11 · CWE 2.2

updated Demonstrative_Examples, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2012-10-30 · CWE 2.3

updated Potential_Mitigations

Modification: CWE Content Team · MITRE · 2013-02-21 · CWE 2.4

updated Relationships

Modification: CWE Content Team · MITRE · 2014-02-18 · CWE 2.6

updated Applicable_Platforms, Demonstrative_Examples

Modification: CWE Content Team · MITRE · 2014-07-30 · CWE 2.8

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2017-01-19 · CWE 2.10

updated Relationships

Modification: CWE Content Team · MITRE · 2017-11-08 · CWE 3.0

updated Likelihood_of_Exploit, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2019-01-03 · CWE 3.2

updated Common_Consequences, References, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2019-06-20 · CWE 3.3

updated Relationships

Modification: CWE Content Team · MITRE · 2019-09-19 · CWE 3.4

updated Description, Relationships

Modification: CWE Content Team · MITRE · 2020-02-24 · CWE 4.0

updated Applicable_Platforms, Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2020-08-20 · CWE 4.2

updated Relationships

Modification: CWE Content Team · MITRE · 2020-12-10 · CWE 4.3

updated Relationships

Modification: CWE Content Team · MITRE · 2021-03-15 · CWE 4.4

updated Demonstrative_Examples

Modification: CWE Content Team · MITRE · 2022-10-13 · CWE 4.9

updated Relationships, Taxonomy_Mappings

Modification: CWE Content Team · MITRE · 2023-01-31 · CWE 4.10

updated Description

Modification: CWE Content Team · MITRE · 2023-04-27 · CWE 4.11

updated Relationships, Time_of_Introduction

Modification: CWE Content Team · MITRE · 2023-06-29 · CWE 4.12

updated Mapping_Notes

Modification: CWE Content Team · MITRE · 2023-10-26 · CWE 4.13

updated Observed_Examples

Modification: CWE Content Team · MITRE · 2025-09-09 · CWE 4.18

updated Common_Consequences, Description, Diagram

Modification: CWE Content Team · MITRE · 2025-12-11 · CWE 4.19

updated Detection_Factors, Weakness_Ordinalities

Modification: CWE Content Team · MITRE · 2026-10-28 · CWE 5.0

updated Dimensions, References

659 vulnerabilities reference this CWE, most recent first.

CVE-2026-121391 (GCVE-0-2026-121391)

Vulnerability from cvelistv5 – Published: 2026-11-03 14:27 – Updated: 2026-11-03 14:27
VLAI
Title
FreeRDP before 3.32.2 File Descriptor Exhaustion via Parallel CREATE
Summary
FreeRDP from 3.0.0 before 3.32.2 contains a file descriptor leak in parallel_process_irp_create that fails to close previous descriptors on repeated IRP_MJ_CREATE requests. A hostile RDP server with parallel-device redirection enabled can send repeated CREATE requests to exhaust the client descriptor table and crash the process.
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7605 records in the last 180 days details
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: 3.0.0 , < 3.32.2 (semver)
Unaffected: 3.32.2 (semver)
    cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-19 00:00
Show details on NVD website

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CVE-2026-119636 (GCVE-0-2026-119636)

Vulnerability from cvelistv5 – Published: 2026-11-03 20:39 – Updated: 2026-11-06 19:37
VLAI
Summary
Improper release of expired privileged access checkouts in the PAM scheduled check-in task in Devolutions Server 2025.3.2.0 through 2026.2.22.0 allows an authenticated user with checkout rights on a PAM account to retain access to that account on the target system after the checkout expires via a backlog of 21 or more newer active checkouts that prevents the expired checkout from being checked in and its password from being rotated.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 19:37 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
DEVOLUTIONS CNA under the mitre root
CNA scorecard E 44/100 over 71 records in the last 180 days details
Impacted products
Vendor Product Version
Devolutions Server Affected: 2025.3.2.0 , < 2026.2.23.0 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-118262 (GCVE-0-2026-118262)

Vulnerability from cvelistv5 – Published: 2026-10-28 19:00 – Updated: 2026-11-03 13:24
VLAI
Title
Echo: WebSocket proxy can retain connections and handlers after client disconnect
Summary
Echo is a Go web framework. From 4.15.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware can retain a handler, copy goroutines, and network connections after a WebSocket client disconnects when the upstream keeps its connection open. The raw proxy waits for both copy directions without reliably closing the peer connection when one direction ends, including when a rejected upgrade response uses HTTP keep-alive. Repeated connections can accumulate resources and cause denial of service, depending on proxy-route accessibility, upstream behavior, and connection deadlines. This issue is fixed in 4.16.1 and 5.4.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 13:24 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7895 records in the last 180 days details
Impacted products
Vendor Product Version
labstack echo Affected: >= 4.15.0, < 4.16.1
Affected: >= 5.0.0, < 5.4.1
Create a notification for this product.
Show details on NVD website

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CVE-2026-115793 (GCVE-0-2026-115793)

Vulnerability from cvelistv5 – Published: 2026-10-29 15:44 – Updated: 2026-11-05 21:32
VLAI
Title
Resource exhaustion from RPC sessions kept for requests to unknown interface
Summary
P-Net before 1.0.3 does not release the RPC session allocated for an RPC request that names an unknown interface or object UUID, and does not start a timeout for it. Repeated requests with different activity UUIDs exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Endpoint Mapper Lookup and Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 21:31 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
rt-labs CNA under the ENISA root
CNA scorecard B 75/100 over 11 records in the last 180 days details
Impacted products
Vendor Product Version
RT-Labs P-Net Affected: 0 , < 1.0.3 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-115215 (GCVE-0-2026-115215)

Vulnerability from cvelistv5 – Published: 2026-11-02 21:43 – Updated: 2026-11-06 17:58
VLAI
Title
NetX Secure DTLS server allocates a session for each new source before the cookie exchange and never reclaims it, so spoofed datagrams exhaust the session pool
Summary
In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the NetX Secure DTLS server allocates a session from its fixed session pool for the first datagram from any unrecognised address and port, before the cookie exchange, and never releases a session whose handshake stalls. A remote, unauthenticated attacker can exhaust the pool with one spoofed datagram per source and deny DTLS service to legitimate clients until the application resets the sessions.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 17:58 UTC
CWE
  • CWE-770 - Allocation of resources without limits or throttling
  • CWE-772 - Missing release of resource after effective lifetime
Assigner
eclipse CNA under the mitre root
CNA scorecard C 66/100 over 204 records in the last 180 days details
Impacted products
Vendor Product Version
Eclipse Foundation Eclipse ThreadX Affected: 6.0 , ≤ 6.5.2.202603a (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-114236 (GCVE-0-2026-114236)

Vulnerability from cvelistv5 – Published: 2026-10-21 08:04 – Updated: 2026-11-06 17:52
VLAI
Title
Podman: goroutine/file-descriptor leak in storage/pkg/archive.applylayer and applyuncompressedlayer on malformed layers
Summary
storage/pkg/archive.ApplyLayer and ApplyUncompressedLayer may, when processing corrupt or malicious inputs, leak a file descriptor; unbounded repeated calls can exhaust the process’ file descriptor limit
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-28 16:22 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1131 records in the last 180 days details
References
URL Tags
https://access.redhat.com/security/cve/CVE-2026-114236 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2558105 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Confidential Compute Attestation     cpe:/a:redhat:confidential_compute_attestation:1
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Red Hat DPU kit for NVIDIA     cpe:/a:redhat:dpu_kit:4
Create a notification for this product.
Red Hat Exploit Intelligence     cpe:/a:redhat:exploit_intelligence:0
Create a notification for this product.
Red Hat Multicluster Engine for Kubernetes     cpe:/a:redhat:multicluster_engine
Create a notification for this product.
Red Hat NVIDIA JetPack 6 for RHEL     cpe:/a:redhat:jetpack:6
Create a notification for this product.
Red Hat OpenShift Lightspeed     cpe:/a:redhat:openshift_lightspeed:1
Create a notification for this product.
Red Hat OpenShift Lightspeed     cpe:/a:redhat:openshift_lightspeed:2
Create a notification for this product.
Red Hat OpenShift Source-to-Image (S2I)     cpe:/a:redhat:source_to_image:1
Create a notification for this product.
Red Hat Red Hat Advanced Cluster Security 4     cpe:/a:redhat:advanced_cluster_security:4
Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2     cpe:/a:redhat:ansible_automation_platform:2
Create a notification for this product.
Red Hat Red Hat Build of Podman Desktop     cpe:/a:redhat:podman_desktop:1
Create a notification for this product.
Red Hat Red Hat Certification Program for Red Hat Enterprise Linux 9     cpe:/a:redhat:certifications:9
Create a notification for this product.
Red Hat Red Hat Developer Hub 1     cpe:/a:redhat:rhdh:1
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10     cpe:/a:redhat:enterprise_linux:10
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9     cpe:/a:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
Create a notification for this product.
Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
Create a notification for this product.
Red Hat Red Hat OpenShift Container Platform 5     cpe:/a:redhat:openshift:5
Create a notification for this product.
Red Hat Red Hat OpenShift Dev Spaces     cpe:/a:redhat:openshift_devspaces:3
Create a notification for this product.
Red Hat Red Hat OpenStack Platform 18.0     cpe:/a:redhat:openstack:18.0
Create a notification for this product.
Red Hat Red Hat Quay 3     cpe:/a:redhat:quay:3
Create a notification for this product.
Date Public
2026-10-21 00:00
Show details on NVD website

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CVE-2026-112200 (GCVE-0-2026-112200)

Vulnerability from cvelistv5 – Published: 2026-10-29 15:42 – Updated: 2026-11-05 21:26
VLAI
Title
Resource exhaustion from unreleased AR and RPC session on RPC requests with incorrect endianness
Summary
P-Net before 1.0.3 does not release the Application Relationship (AR) and the RPC session when an RPC request is rejected because its data representation has incorrect endianness. The session and its AR remain allocated, so repeated requests exhaust the available sessions. Once they are exhausted the device no longer answers new RPC requests, including Connect, until it is restarted. A remote unauthenticated attacker can use this to cause a denial of service.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 21:26 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
rt-labs CNA under the ENISA root
CNA scorecard B 75/100 over 11 records in the last 180 days details
Impacted products
Vendor Product Version
RT-Labs P-Net Affected: 0 , < 1.0.3 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-107834 (GCVE-0-2026-107834)

Vulnerability from cvelistv5 – Published: 2026-10-09 17:41 – Updated: 2026-10-13 20:26
VLAI
Title
OWASP Coraza WAF: Resource exhaustion via deferred file handle accumulation in multipart body processor
Summary
OWASP Coraza WAF is a golang modsecurity compatible web application firewall library. From 3.0.0 until 3.8.0, the multipart loop in internal/bodyprocessors/multipart.go executes defer temp.Close() for every uploaded file part, so each temporary-file descriptor remains open until the complete request returns. An unauthenticated attacker can submit a multipart body containing many minimal file parts and exhaust the process file-descriptor table within the request-body size limit, causing os.CreateTemp failures, MULTIPART_STRICT_ERROR responses, blocked legitimate uploads, and process-wide inability to open files or sockets. This issue is fixed in version 3.8.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:19 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7895 records in the last 180 days details
Impacted products
Vendor Product Version
corazawaf coraza Affected: >= 3.0.0, < 3.8.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-107286 (GCVE-0-2026-107286)

Vulnerability from cvelistv5 – Published: 2026-10-08 15:12 – Updated: 2026-10-08 17:27
VLAI
Title
Pydantic AI: Concurrency-limited models can keep their slot when a streamed request ends early
Summary
Pydantic AI is a Python agent framework for building applications and workflows with Generative AI. From 2.10.0 until 2.53.0, streamed requests made through ConcurrencyLimitedModel or limit_model_concurrency can retain shared concurrency slots because anyio.CapacityLimiter associates an acquired slot with the borrowing task while streaming cleanup can run in a different task. Early stream termination, cancellation, consumer exceptions, or complete stream_text() consumption with debounce_by=0.1 can therefore leave capacity occupied, eventually preventing later requests that share the long-lived limiter from proceeding and causing a denial of service. Agent-level max_concurrency and non-streaming model requests are not affected. This issue is fixed in version 2.53.0.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 17:26 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7895 records in the last 180 days details
Impacted products
Vendor Product Version
pydantic pydantic-ai Affected: >= 2.10.0, < 2.53.0
Create a notification for this product.
pydantic pydantic-ai-slim Affected: >= 2.10.0, < 2.53.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-104112 (GCVE-0-2026-104112)

Vulnerability from cvelistv5 – Published: 2026-10-09 14:19 – Updated: 2026-10-09 16:45
VLAI
Title
Missing release of passed file descriptors in illumos nscd allows local users to exhaust kernel memory
Summary
A missing release of resources in the illumos name service cache daemon (nscd) allows a local user to exhaust kernel memory. The nscd door server procedure, switcher() in usr/src/cmd/nscd/nscd_frontend.c, does not close file descriptors that are passed with a door call but not used by the request, and the main nscd door at /var/run/name_service_door accepts passed descriptors from any user in its zone. Because nscd also runs with an unlimited file descriptor limit, an unprivileged local user, including one in a non-global zone, can repeatedly pass a descriptor to its zone's nscd in a door_call() loop, causing the file descriptor table of nscd to grow without bound in kernel memory. This causes a denial of service of nscd and can render processes in all zones on the host unresponsive. The flaw has existed since 2006 (illumos-gate commit cb5caa98), and affects any illumos distribution prior to illumos-gate commit af810a72.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-09 16:15 UTC
CWE
  • CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
illumos CNA under the redhat root
CNA scorecard – unranked: 9 records in the last 180 days, 10 needed details
Impacted products
Vendor Product Version
illumos illumos-gate Affected: cb5caa98562cf06753163f558cbcfe30b8f4673a , < af810a72c09944e884ec695e8dbf1702a4f424ae (git)
Create a notification for this product.
OmniOS OmniOS Affected: any , < r151054 (custom)
Affected: r151058 , < r151058w (custom)
Affected: r151056 , < r151056aw (custom)
Affected: r151054 , < r151054bw (custom)
Create a notification for this product.
Show details on NVD website

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Mitigation MIT-3
Requirements

Strategy: Language Selection

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • For example, languages such as Java, Ruby, and Lisp perform automatic garbage collection that releases memory for objects that have been deallocated.
Mitigation
Implementation

It is good practice to be responsible for freeing all resources you allocate and to be consistent with how and where you free resources in a function. If you allocate resources that you intend to free upon completion of the function, you must be sure to free the resources at all exit points for that function including error conditions.

Mitigation MIT-47
Operation Architecture and Design

Strategy: Resource Limitation

  • Use resource-limiting settings provided by the operating system or environment. For example, when managing system resources in POSIX, setrlimit() can be used to set limits for certain types of resources, and getrlimit() can determine how many resources are available. However, these functions are not available on all operating systems.
  • When the current levels get close to the maximum that is defined for the application (see CWE-770), then limit the allocation of further resources to privileged users; alternately, begin releasing resources for less-privileged users. While this mitigation may protect the system from attack, it will not necessarily stop attackers from adversely impacting other users.
  • Ensure that the application performs the appropriate error checks and error handling in case resources become unavailable (CWE-703).
CAPEC-469: HTTP DoS

An attacker performs flooding at the HTTP level to bring down only a particular web application rather than anything listening on a TCP/IP connection. This denial of service attack requires substantially fewer packets to be sent which makes DoS harder to detect. This is an equivalent of SYN flood in HTTP. The idea is to keep the HTTP session alive indefinitely and then repeat that hundreds of times. This attack targets resource depletion weaknesses in web server software. The web server will wait to attacker's responses on the initiated HTTP sessions while the connection threads are being exhausted.