Common Weakness Enumeration
CWE-789
Weakness AllowedMemory Allocation with Excessive Size Value
Abstraction: Variant · Status: Draft
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
Mapping guidance
This CWE entry is at the Variant 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.
Modes of introduction
Implementation
Detection methods
Fuzzing
Fuzz testing (fuzzing) is a powerful technique for generating large numbers of diverse inputs - either randomly or algorithmically - and dynamically invoking the code with those inputs. Even with random inputs, it is often capable of generating unexpected results such as crashes, memory corruption, or resource consumption. Fuzzing effectively produces repeatable test cases that clearly indicate bugs, which helps developers to diagnose the issues.
Effectiveness: High
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
Automated Dynamic Analysis
Use tools that are integrated during compilation to insert runtime error-checking mechanisms related to memory safety errors, such as AddressSanitizer (ASan) for C/C++ [REF-1518].
Effectiveness: Moderate
Crafted inputs are necessary to reach the code containing the error, such as generated by fuzzers. Also, these tools may reduce performance, and they only report the error condition - not the original mistake that led to the error.
Notes
Relationship
This weakness can be closely associated with integer overflows (CWE-190). Integer overflow attacks would concentrate on providing an extremely large number that triggers an overflow that causes less memory to be allocated than expected. By providing a large value that does not trigger an integer overflow, the attacker could still cause excessive amounts of memory to be allocated.
Applicable Platform
Uncontrolled memory allocation is possible in many languages, such as dynamic array allocation in perl or initial size parameters in Collections in Java. However, languages like C and C++ where programmers have the power to more directly control memory management will be more susceptible.
Content history
Submission: CWE Content Team
· MITRE
· 2009-10-21
· CWE 1.6
Modification: CWE Content Team
· MITRE
· 2010-02-16
· CWE 1.8
updated Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2011-03-29
· CWE 1.12
updated Common_Consequences, Observed_Examples
Modification: CWE Content Team
· MITRE
· 2011-06-01
· CWE 1.13
updated Common_Consequences
Modification: CWE Content Team
· MITRE
· 2012-05-11
· CWE 2.2
updated References
Modification: CWE Content Team
· MITRE
· 2017-11-08
· CWE 3.0
updated Applicable_Platforms, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2019-01-03
· CWE 3.2
updated References, Relationships, Taxonomy_Mappings
Modification: CWE Content Team
· MITRE
· 2019-06-20
· CWE 3.3
updated Relationships
Modification: CWE Content Team
· MITRE
· 2020-02-24
· CWE 4.0
updated Relationships
Modification: CWE Content Team
· MITRE
· 2020-06-25
· CWE 4.1
updated Relationships
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 Alternate_Terms, Demonstrative_Examples, Description, Likelihood_of_Exploit, Name, Observed_Examples, Relationships, Time_of_Introduction
Modification: CWE Content Team
· MITRE
· 2021-03-15
· CWE 4.4
updated Demonstrative_Examples, Relationships
Modification: CWE Content Team
· MITRE
· 2022-10-13
· CWE 4.9
updated Observed_Examples
Modification: CWE Content Team
· MITRE
· 2023-04-27
· CWE 4.11
updated Detection_Factors, Relationships
Modification: CWE Content Team
· MITRE
· 2023-06-29
· CWE 4.12
updated Mapping_Notes, Relationships
Modification: CWE Content Team
· MITRE
· 2025-09-09
· CWE 4.18
updated Affected_Resources, Functional_Areas, Observed_Examples
Modification: CWE Content Team
· MITRE
· 2025-12-11
· CWE 4.19
updated Detection_Factors, References
Modification: CWE Content Team
· MITRE
· 2026-04-30
· CWE 4.20
updated Observed_Examples
Modification: CWE Content Team
· MITRE
· 2026-10-28
· CWE 5.0
updated References
592 vulnerabilities reference this CWE, most recent first.
CVE-2026-122129 (GCVE-0-2026-122129)
Vulnerability from cvelistv5 – Published: 2026-11-04 20:36 – Updated: 2026-11-05 20:48
VLAI
EPSS
VEX
Title
CESNET ipfixcol2 2.7.1 before 2.9.0 Memory Exhaustion via TCP LZ4 Decoder
Summary
CESNET ipfixcol2 2.7.1 before 2.9.0 contains a memory allocation vulnerability in Lz4Decoder::read_start_header() that allows unauthenticated attackers to exhaust memory by declaring unbounded ring buffer sizes. Attackers can open TCP connections sending LZ4 start headers with very large buffer sizes, forcing up to 4 GiB allocations per connection and denying collector service.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 20:48 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/CESNET/ipfixcol2/commit/1a1990… | patch |
| https://github.com/CESNET/ipfixcol2 | product |
| https://github.com/CESNET/ipfixcol2/releases/tag/v2.9.0 | release-notes |
| https://github.com/CESNET/ipfixcol2/blob/v2.8.0/s… | technical-description |
| https://www.vulncheck.com/advisories/cesnet-ipfix… | third-party-advisory |
Impacted products
Date Public
2026-10-14 00:00
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CVE-2026-122052 (GCVE-0-2026-122052)
Vulnerability from cvelistv5 – Published: 2026-11-05 00:15 – Updated: 2026-11-05 20:30
VLAI
EPSS
VEX
Title
laspy LAS File lasreader.py memory allocation
Summary
A vulnerability has been found in laspy up to 2.7.0. Affected by this issue is some unknown functionality of the file laspy/lasreader.py of the component LAS File Handler. The manipulation leads to uncontrolled memory allocation. Remote exploitation of the attack is possible.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 20:30 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/431136 | vdb-entry |
| https://vuldb.com/vuln/431136/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-122052 | third-party-advisory |
| https://vuldb.com/submit/1026182 | third-party-advisory |
| https://github.com/laspy/laspy/issues/378 | issue-tracking |
| https://github.com/laspy/laspy/issues/378#issueco… | issue-tracking |
| https://github.com/laspy/laspy/ | product |
Impacted products
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CVE-2026-119280 (GCVE-0-2026-119280)
Vulnerability from cvelistv5 – Published: 2026-10-29 20:55 – Updated: 2026-10-30 17:10
VLAI
EPSS
VEX
Title
MariaDB Connector/J : XA recover() trusted server-supplied gtrid and bqual lengths
Summary
MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7, 3.4.5, and 3.5.11, the MariaDbPoolConnection.recover() and MariaDbPoolPinnedConnection.recover() implementations trusted the gtrid_length and bqual_length columns returned by XA RECOVER. The methods allocated and split Xid byte arrays without validating the lengths against Xid.MAXGTRIDSIZE, Xid.MAXBQUALSIZE, or the actual data payload. A malicious or compromised server, or a machine-in-the-middle attacker, could cause large allocations, NegativeArraySizeException, or ArrayIndexOutOfBoundsException during XA recovery. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 17:09 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_CONFIRM |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mariadb-corporation | mariadb-connector-j |
Affected:
>= 3.0.0, < 3.3.7
Affected: >= 3.4.0, < 3.4.5 Affected: >= 3.5.0, < 3.5.11 |
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CVE-2026-119278 (GCVE-0-2026-119278)
Vulnerability from cvelistv5 – Published: 2026-10-29 20:50 – Updated: 2026-10-30 16:00
VLAI
EPSS
VEX
Title
MariaDB Connector/J: Rogue server can crash the client during caching_sha2_password authentication
Summary
MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7 and 3.4.5, during caching_sha2_password authentication, the authentication-more-data response was treated as a length-encoded byte array, memory was allocated from the server-declared length, and authResult[0] was accessed without ensuring a byte existed. A malicious or compromised server, or a machine-in-the-middle attacker, could declare a very large length or send an empty response before any password was transmitted. The malformed packet could cause excessive allocation or an unchecked ArrayIndexOutOfBoundsException escaping from DriverManager.getConnection(). This issue is fixed in versions 3.3.7 and 3.4.5.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 15:20 UTC
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_CONFIRM |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mariadb-corporation | mariadb-connector-j |
Affected:
>= 3.0.0, < 3.3.7
Affected: >= 3.4.0, < 3.4.5 |
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CVE-2026-119276 (GCVE-0-2026-119276)
Vulnerability from cvelistv5 – Published: 2026-10-29 20:47 – Updated: 2026-10-30 17:11
VLAI
EPSS
VEX
Title
MariaDB Connector/J: Rogue server can drive large heap allocations from server-declared lengths in OK packets
Summary
MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. From 3.0.0 until 3.3.7, 3.4.5, and 3.5.11, when CLIENT_SESSION_TRACK was negotiated, the OkPacket.parse() and OkPacket.parseWithInfo() paths allocated byte arrays using server-declared lengths for the OK packet info field and session-state variable names and values before confirming that the bytes remained in the packet. A malicious or compromised server, or a machine-in-the-middle attacker, could send a small OK packet declaring a much larger length and repeatedly force attacker-controlled heap allocations before the subsequent copy failed. This could create garbage-collection pressure or an OutOfMemoryError in the client application. This issue is fixed in versions 3.3.7, 3.4.5, and 3.5.11.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-30 17:11 UTC
CWE
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_CONFIRM |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
| https://github.com/mariadb-corporation/mariadb-co… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mariadb-corporation | mariadb-connector-j |
Affected:
>= 3.0.0, < 3.3.7
Affected: >= 3.4.0, < 3.4.5 Affected: >= 3.5.0, < 3.5.11 |
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CVE-2026-118590 (GCVE-0-2026-118590)
Vulnerability from cvelistv5 – Published: 2026-10-29 00:00 – Updated: 2026-11-04 01:09
VLAI
EPSS
VEX
Title
nipy nibabel Header volumeutils.py array_from_file memory allocation
Summary
A security vulnerability has been detected in nipy nibabel up to 5.4.2. The affected element is the function array_from_file of the file nibabel/volumeutils.py of the component Header Handler. The manipulation leads to uncontrolled memory allocation. The attack is possible to be carried out remotely. The pull request to fix this issue awaits acceptance.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-04 01:09 UTC
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/428028 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/428028/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-118590 | third-party-advisory |
| https://vuldb.com/submit/1026208 | third-party-advisory |
| https://github.com/nipy/nibabel/issues/1566 | issue-tracking |
| https://github.com/nipy/nibabel/pull/1587 | issue-trackingpatch |
| https://github.com/nipy/nibabel/ | product |
Impacted products
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CVE-2026-118589 (GCVE-0-2026-118589)
Vulnerability from cvelistv5 – Published: 2026-10-28 23:45 – Updated: 2026-10-29 17:20
VLAI
EPSS
VEX
Title
nschloe meshio VTK Reader _vtk_42.py memory allocation
Summary
A weakness has been identified in nschloe meshio up to 5.3.5. Impacted is an unknown function of the file meshio/_vtk_42.py of the component VTK Reader. Executing a manipulation of the argument DIMENSIONS can lead to uncontrolled memory allocation. The attack can be executed remotely. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 15:43 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/428027 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/428027/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-118589 | third-party-advisory |
| https://vuldb.com/submit/1026207 | third-party-advisory |
| https://github.com/nschloe/meshio/issues/1576 | issue-tracking |
| https://github.com/nschloe/meshio/ | product |
Impacted products
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CVE-2026-118036 (GCVE-0-2026-118036)
Vulnerability from cvelistv5 – Published: 2026-10-28 12:33 – Updated: 2026-10-28 12:33
VLAI
EPSS
VEX
Title
Uncontrolled Resource Consumption in Telerik Document Processing Libraries RadPdfProcessing and AI Document Summarization and Question Answering
Summary
In Progress® Telerik® Document Processing Libraries prior to version 2026.3.1027, uncontrolled recursion, infinite loop, inefficient algorithmic complexity and resource allocation vulnerabilities in RadPdfProcessing and AI document summarization and question answering allow an unauthenticated attacker to terminate or hang the host process via a crafted PDF document or document text submitted for summarization or question answering.
Severity
7.5 (High)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://docs.telerik.com/devtools/document-proces… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Progress Software | Telerik Document Processing Libraries |
Affected:
0 , < 2026.3.1027
(custom)
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CVE-2026-116787 (GCVE-0-2026-116787)
Vulnerability from cvelistv5 – Published: 2026-11-05 19:24 – Updated: 2026-11-05 21:12
VLAI
EPSS
VEX
Title
FreeSWITCH: Pre-authentication process termination in the Event Socket via an unbounded Content-Length
Summary
FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, mod_event_socket used an unauthenticated Content-Length value directly as the allocation size for an Event Socket message body. Negative or extremely large values could overflow the terminator calculation or force an allocation failure through a helper that aborts the FreeSWITCH process. The header is parsed before the Event Socket password, so any host admitted by apply-inbound-acl can trigger termination with its first packet; the default loopback ACL limits ordinary installations to local clients. The outbound socket dialplan path is also affected when FreeSWITCH connects to a hostile application server, and process termination drops every active call until the service is restarted. This issue is fixed in version 1.11.2.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-05 21:12 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/signalwire/freeswitch/security… | x_refsource_CONFIRM |
| https://github.com/signalwire/freeswitch/commit/a… | x_refsource_MISC |
| https://github.com/signalwire/freeswitch/releases… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| signalwire | freeswitch |
Affected:
< 1.11.2
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CVE-2026-116095 (GCVE-0-2026-116095)
Vulnerability from cvelistv5 – Published: 2026-10-25 22:45 – Updated: 2026-10-29 16:26 X_Open Source
VLAI
EPSS
VEX
Title
smg-project smg llm-multimodal jpeg_turbo.rs decode_jpeg_rgb memory allocation
Summary
A vulnerability was identified in smg-project smg 1.7.0/1.8.0/1.9.0/1.10.0/1.10.1. Affected is the function jpeg_turbo::decode_jpeg_rgb of the file crates/multimodal/src/jpeg_turbo.rs of the component llm-multimodal. The manipulation leads to uncontrolled memory allocation. The attack can be initiated remotely. The exploit is publicly available and might be used. Upgrading to version 1.11.0 is able to address this issue. The identifier of the patch is 8f51b57e219a914089e345b704c3c8de37a3bb8e. It is advisable to upgrade the affected component.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 16:25 UTC
Assigner
References
10 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/426162 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/426162/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-116095 | third-party-advisory |
| https://vuldb.com/submit/1000796 | third-party-advisory |
| https://github.com/smg-project/smg/issues/2361 | issue-tracking |
| https://github.com/smg-project/smg/pull/2569 | issue-trackingpatch |
| https://gist.github.com/Yunzez/24a1bf4c226fbc324e… | exploit |
| https://github.com/smg-project/smg/commit/8f51b57… | patch |
| https://github.com/smg-project/smg/releases/tag/v1.11.0 | patch |
| https://github.com/smg-project/smg/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| smg-project | smg |
Affected:
1.7.0
Affected: 1.8.0 Affected: 1.9.0 Affected: 1.10.0 Affected: 1.10.1 Unaffected: 1.11.0 cpe:2.3:a:smg-project:smg:*:*:*:*:*:*:*:* |
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Mitigation
Implementation
Architecture and Design
Perform adequate input validation against any value that influences the amount of memory that is allocated. Define an appropriate strategy for handling requests that exceed the limit, and consider supporting a configuration option so that the administrator can extend the amount of memory to be used if necessary.
Mitigation
Operation
Run your program using system-provided resource limits for memory. This might still cause the program to crash or exit, but the impact to the rest of the system will be minimized.
No CAPEC attack patterns related to this CWE.