CWE-772
Weakness AllowedMissing 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
Modes of introduction
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
updated Demonstrative_Examples, Potential_Mitigations, Relationships
updated Potential_Mitigations
updated Potential_Mitigations
updated Common_Consequences, Relationships, Taxonomy_Mappings
updated Observed_Examples, Related_Attack_Patterns, Relationships
updated Relationships, Taxonomy_Mappings
updated Demonstrative_Examples, Relationships, Taxonomy_Mappings
updated Potential_Mitigations
updated Relationships
updated Applicable_Platforms, Demonstrative_Examples
updated Relationships, Taxonomy_Mappings
updated Relationships
updated Likelihood_of_Exploit, Taxonomy_Mappings
updated Common_Consequences, References, Relationships, Taxonomy_Mappings
updated Relationships
updated Description, Relationships
updated Applicable_Platforms, Relationships, Taxonomy_Mappings
updated Relationships
updated Relationships
updated Demonstrative_Examples
updated Relationships, Taxonomy_Mappings
updated Description
updated Relationships, Time_of_Introduction
updated Mapping_Notes
updated Observed_Examples
updated Common_Consequences, Description, Diagram
updated Detection_Factors, Weakness_Ordinalities
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- CWE-772 - Missing Release of Resource after Effective Lifetime
| URL | Tags |
|---|---|
| https://github.com/FreeRDP/FreeRDP/security/advis… | vendor-advisory |
| https://www.vulncheck.com/advisories/freerdp-befo… | third-party-advisory |
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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- CWE-772 - Missing Release of Resource after Effective Lifetime
| Vendor | Product | Version | |
|---|---|---|---|
| Devolutions | Server |
Affected:
2025.3.2.0 , < 2026.2.23.0
(custom)
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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- CWE-772 - Missing Release of Resource after Effective Lifetime
| URL | Tags |
|---|---|
| https://github.com/labstack/echo/security/advisor… | x_refsource_CONFIRM |
| https://github.com/labstack/echo/commit/1855061e5… | x_refsource_MISC |
| https://github.com/labstack/echo/commit/3fb0ba7e1… | x_refsource_MISC |
| https://github.com/labstack/echo/releases/tag/v4.16.1 | x_refsource_MISC |
| https://github.com/labstack/echo/releases/tag/v5.4.1 | x_refsource_MISC |
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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- CWE-772 - Missing Release of Resource after Effective Lifetime
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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| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse ThreadX |
Affected:
6.0 , ≤ 6.5.2.202603a
(custom)
|
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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- CWE-772 - Missing Release of Resource after Effective Lifetime
| 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 |
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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- CWE-772 - Missing Release of Resource after Effective Lifetime
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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| URL | Tags |
|---|---|
| https://github.com/corazawaf/coraza/security/advi… | x_refsource_CONFIRM |
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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- CWE-772 - Missing Release of Resource after Effective Lifetime
| URL | Tags |
|---|---|
| https://github.com/pydantic/pydantic-ai/security/… | x_refsource_CONFIRM |
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| https://github.com/pydantic/pydantic-ai/releases/… | x_refsource_MISC |
| Vendor | Product | Version | |
|---|---|---|---|
| pydantic | pydantic-ai |
Affected:
>= 2.10.0, < 2.53.0
|
|
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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- CWE-772 - Missing Release of Resource after Effective Lifetime
| URL | Tags |
|---|---|
| https://illumos.topicbox.com/groups/developer/T3b… | mailing-list |
| https://illumos.org/issues/18494 | issue-tracking |
| https://github.com/illumos/illumos-gate/commit/af… | patch |
| Vendor | Product | Version | |
|---|---|---|---|
| illumos | illumos-gate |
Affected:
cb5caa98562cf06753163f558cbcfe30b8f4673a , < af810a72c09944e884ec695e8dbf1702a4f424ae
(git)
|
|
| OmniOS | OmniOS |
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Affected: r151058 , < r151058w (custom) Affected: r151056 , < r151056aw (custom) Affected: r151054 , < r151054bw (custom) |
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"cveId": "CVE-2026-104112",
"datePublished": "2026-10-09T14:19:29.399Z",
"dateReserved": "2026-10-01T18:07:53.956Z",
"dateUpdated": "2026-10-09T16:45:36.172Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation MIT-3
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
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
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.