Vulnerability Mapping:ALLOWEDThis CWE ID could be used to map to real-world vulnerabilities in limited situations requiring careful review
(with careful review of mapping notes)
Abstraction:
ClassClass - a weakness that is described in a very abstract fashion, typically independent of any specific language or technology. More specific than a Pillar Weakness, but more general than a Base Weakness. Class level weaknesses typically describe issues in terms of 1 or 2 of the following dimensions: behavior, property, and resource.
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Description
The product uses or supports data in a cache, but it does
not properly specify an expiration with a date, time, or
time period that is sufficient for the intended security
policy of the product or its adminstrators.
Common Consequences
This table specifies different individual consequences
associated with the weakness. The Scope identifies the application security area that is
violated, while the Impact describes the negative technical impact that arises if an
adversary succeeds in exploiting this weakness. The Likelihood provides information about
how likely the specific consequence is expected to be seen relative to the other
consequences in the list. For example, there may be high likelihood that a weakness will be
exploited to achieve a certain impact, but a low likelihood that it will be exploited to
achieve a different impact.
Impact
Details
Gain Privileges or Assume Identity; Bypass Protection Mechanism; Unexpected State; Varies by Context
Scope: Access Control, Integrity, Other
If the cached data is used for
security-critical functionality such as authentication,
authorization, or identity, then this might allow users
or adversaries to perform operations beyond their
expected lifetime. If the data is old but used for
identification, such as DNS lookup results, then the
stale data could point to entities that are no longer
controlled by the intended owner.
Potential Mitigations
Phase(s)
Mitigation
Architecture and Design; Implementation
For each type of cached data, determine the
best lifetime that balances efficiency provided by the
cache with the security implications of the data
becoming too stale. Explicitly specify an expiration
date or time period.
Relationships
This table shows the weaknesses and high level categories that are related to this
weakness. These relationships are defined as ChildOf, ParentOf, MemberOf and give insight to
similar items that may exist at higher and lower levels of abstraction. In addition,
relationships such as PeerOf, Overlaps, and CanAlsoBe are defined to show similar weaknesses that the user
may want to explore.
Relevant to the view "Complete Weakness Hierarchy" (View-1000)
Nature
Type
ID
Name
ChildOf
Pillar - a weakness that is the most abstract type of weakness and represents a theme for all class/base/variant weaknesses related to it. A Pillar is different from a Category as a Pillar is still technically a type of weakness that describes a mistake, while a Category represents a common characteristic used to group related things.
Improper Control of a Resource Through its Lifetime
Modes
Of Introduction
The different Modes of Introduction provide information
about how and when this
weakness may be introduced. The Phase identifies a point in the life cycle at which
introduction
may occur, while the Note provides a typical scenario related to introduction during the
given
phase.
Phase(s)
Note
Implementation
Developers might inadvertently omit
specifying a specific expiration for the data. With some
cache mechanisms, this could cause the data to be
labeled as having no expiration at all.
Applicable Platforms
This listing shows possible areas for which the given
weakness could appear. These
may be for specific named Languages, Operating Systems, Architectures, Paradigms,
Technologies,
or a class of such platforms. The platform is listed along with how frequently the given
weakness appears for that instance.
Type
Applicable Platforms
Notes
Languages
Class: Not Language-Specific
(Undetermined Prevalence)
Architectures
Class: Not Architecture-Specific
(Undetermined Prevalence)
Technologies
Class: Not Technology-Specific
(Undetermined Prevalence)
Demonstrative Examples
Example 1
Some JVM implementations cache DNS resolution results by default.
(bad code)
Example Language: Algorithm
The expiry setting of the cached results might either
be inappropriately long for the program or set to
never expire.
This results in a situation where changes to
DNS records seemingly do not take effect in the
program. This could cause the product to communicate
with IP addresses that are no longer associated with
the updated DNS records.
(good code)
Example Language: Algorithm
To mitigate this situation, the DNS cache
setting networkaddress.cache.ttl for the JVM needs to
be set appropriately.
Selected Observed
Examples
Note: this is a curated list of examples for users to understand the variety of ways in which this
weakness can be introduced. It is not a complete list of all CVEs that are related to this CWE entry.
RESTful search engine caches DNS hostname lookups
forever in order to prevent DNS spoofing attacks, but
it will not be able to detect when the hostnames
resolve to a different IP address.
Memberships
This MemberOf Relationships table shows additional CWE Categories and Views that
reference this weakness as a member. This information is often useful in understanding where a
weakness fits within the context of external information sources.
Nature
Type
ID
Name
MemberOf
Grouping - a CWE entry that contains a set of other entries that share a common characteristic.
(this CWE ID could be used to map to real-world vulnerabilities in limited situations requiring careful review)
Reason
Abstraction
Rationale
This CWE Entry is a Class and might have lower-level children that would be more appropriate
Comments
Examine children of this entry to see if there is a better fit
Notes
Maintenance
Version: 5.0; Release Date: 2026-10-28
This entry was created in CWE 5.0 to address known gaps in CWE coverage. It is not as complete as other new entries that were published in recent years. The CWE Team plans to work with the CWE community to make this entry more complete in later 5.x releases.
Description
This table specifies different individual consequences
associated with the weakness. The Scope identifies the application security area that is
violated, while the Impact describes the negative technical impact that arises if an
adversary succeeds in exploiting this weakness. The Likelihood provides information about
how likely the specific consequence is expected to be seen relative to the other
consequences in the list. For example, there may be high likelihood that a weakness will be
exploited to achieve a certain impact, but a low likelihood that it will be exploited to
achieve a different impact.
