Common Weakness Enumeration
CWE-789
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.
414 vulnerabilities reference this CWE, most recent first.
CVE-2026-52759 (GCVE-0-2026-52759)
Vulnerability from cvelistv5 – Published: 2026-06-10 12:43 – Updated: 2026-06-10 14:46 X_Open Source
VLAI
EPSS
VEX
Title
Ghidra < 12.1.1 - Denial of Service via Uncontrolled Memory Allocation in Mach-O Parser
Summary
Ghidra before 12.1.1 contains an uncontrolled memory allocation vulnerability in the Mach-O binary parser that allows attackers to cause denial of service. An attacker can supply a crafted Mach-O binary with an arbitrarily large ncmds load command count value, forcing the parser to allocate excessive heap memory without validating file size, crashing the Ghidra JVM.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 14:46 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/NationalSecurityAgency/ghidra/… | vendor-advisory |
| https://www.vulncheck.com/advisories/ghidra-denia… | third-party-advisory |
Impacted products
Date Public
2026-06-08 00:00
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CVE-2026-52753 (GCVE-0-2026-52753)
Vulnerability from cvelistv5 – Published: 2026-06-10 12:40 – Updated: 2026-07-14 21:33 X_Open Source
VLAI
EPSS
VEX
Title
Ghidra < 12.0.3 - Out-of-Memory in Rust Symbol Demangler via Malformed Symbol
Summary
Ghidra before 12.0.3 contains an out-of-memory vulnerability in the rust_demangle function that allocates unbounded output buffers without size limits. Attackers can craft malicious Rust symbol names in binaries to trigger exponential memory allocation, causing process crashes during binary analysis.
Severity
5.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 15:14 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/NationalSecurityAgency/ghidra/… | vendor-advisory |
| https://www.vulncheck.com/advisories/ghidra-out-o… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| nationalsecurityagency | ghidra |
Affected:
0 , < 12.0.3
(semver)
Unaffected: 12.0.3 (semver) cpe:2.3:a:nsa:ghidra:*:*:*:*:*:*:*:* |
Date Public
2026-02-11 00:00
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CVE-2026-50734 (GCVE-0-2026-50734)
Vulnerability from cvelistv5 – Published: 2026-06-30 09:53 – Updated: 2026-06-30 12:32
VLAI
EPSS
VEX
Title
Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire memory-allocation DoS during wire format negotiation
Summary
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All.
An unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validate and causes the broker to attempt allocation during pre-auth negotiation which can trigger OOM and crash the broker.
This issue affects Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7.
Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 12:32 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/nxso951fnvf72qf9m… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache ActiveMQ Client |
Affected:
0 , < 5.19.8
(semver)
Affected: 6.0.0 , < 6.2.7 (semver) |
|
| Apache Software Foundation | Apache ActiveMQ |
Affected:
0 , < 5.19.8
(semver)
Affected: 6.0.0 , < 6.2.7 (semver) |
|
| Apache Software Foundation | Apache ActiveMQ All |
Affected:
0 , < 5.19.8
(semver)
Affected: 6.0.0 , < 6.2.7 (semver) |
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CVE-2026-49975 (GCVE-0-2026-49975)
Vulnerability from cvelistv5 – Published: 2026-06-08 15:26 – Updated: 2026-08-19 12:05
VLAI
EPSS
VEX
Title
Apache HTTP Server: mod_http2 denial of service
Summary
Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's mod_http leads to denial of service via malicious HTTP requests.
This issue affects Apache HTTP Server: from 2.4.17 through 2.4.67.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-18 10:27 UTC
CWE
Assigner
References
22 references
Impacted products
23 products
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server |
Affected:
2.4.17 , ≤ 2.4.67
(semver)
|
|
| Red Hat | JBoss Core Services for RHEL 8 |
Unaffected:
0:2.4.62-13.el8jbcs , < *
(rpm)
cpe:/a:redhat:jboss_core_services:1::el8 |
|
| Red Hat | JBoss Core Services for RHEL 8 |
Unaffected:
0:2.0.29-10.el8jbcs , < *
(rpm)
cpe:/a:redhat:jboss_core_services:1::el8 |
|
| Red Hat | JBoss Core Services on RHEL 7 |
Unaffected:
0:2.4.62-13.el7jbcs , < *
(rpm)
cpe:/a:redhat:jboss_core_services:1::el7 |
|
| Red Hat | JBoss Core Services on RHEL 7 |
Unaffected:
0:2.0.29-10.el7jbcs , < *
(rpm)
cpe:/a:redhat:jboss_core_services:1::el7 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:2.0.29-4.el10_2.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
|
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:2.0.29-2.el10_0.2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
8100020260608081321.489197e6 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
8040020260702193120.522a0ee4 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
8040020260702193120.522a0ee4 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.4 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
8060020260702195216.ad008a3a , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
8060020260702195216.ad008a3a , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
8080020260702200145.63b34585 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
8080020260702200145.63b34585 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:2.0.26-6.el9_8.1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:1.15.19-4.el9_2.8 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
|
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:2.0.26-2.el9_4.3 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4 |
|
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:2.0.26-4.el9_6.2 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
|
| Red Hat | Red Hat JBoss Core Services 2.4.62.SP4 |
Unaffected:
httpd24-httpd , < *
(rpm)
Unaffected: httpd24-mod_http2 , < * (rpm) cpe:/a:redhat:jboss_core_services:1 |
|
| Red Hat | Red Hat Hardened Images |
Unaffected:
2.4.68-1.hum1 , < *
(rpm)
cpe:/a:redhat:hummingbird:1 |
|
| Red Hat | Red Hat OpenShift Service Mesh 2.6 |
Unaffected:
1781604724 , < *
(rpm)
cpe:/a:redhat:service_mesh:2.6::el9 |
|
| Red Hat | Red Hat JBoss Core Services |
cpe:/a:redhat:jboss_core_services:1
|
|
| Red Hat | Red Hat JBoss Web Server 5 |
cpe:/a:redhat:jboss_enterprise_web_server:5
|
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-06-08T22:32:35.729Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/03/3"
},
{
"url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00009.html"
},
{
"url": "http://www.openwall.com/lists/oss-security/2026/06/08/16"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"version": "3.1"
}
},
{
"other": {
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"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-18T10:27:36.270403Z",
"version": "2.0.3"
},
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}
}
],
"providerMetadata": {
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},
"references": [
{
"tags": [
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],
"url": "https://github.com/EQSTLab/CVE-2026-49975"
}
],
"title": "CISA ADP Vulnrichment"
},
{
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"vendor": "Red Hat",
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"vendor": "Red Hat"
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"vendor": "Red Hat"
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"cpes": [
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"product": "Red Hat JBoss Core Services",
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"vendor": "Red Hat"
},
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},
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"vendor": "Red Hat"
},
{
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"defaultStatus": "unaffected",
"packageName": "jbcs-httpd24-openssl-chil",
"product": "Red Hat JBoss Core Services",
"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
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"defaultStatus": "unaffected",
"packageName": "jbcs-httpd24-openssl-pkcs11",
"product": "Red Hat JBoss Core Services",
"vendor": "Red Hat"
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],
"datePublic": "2026-06-03T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in HTTP/2, affecting various web servers. A remote attacker can exploit this vulnerability by combining an HPACK compression bomb with a zero-byte flow-control window. This technique allows a small amount of data to expand into large memory allocations on the server, which are then held, leading to a denial of service (DoS) by rendering the server inaccessible."
}
],
"metrics": [
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CVE-2026-48502 (GCVE-0-2026-48502)
Vulnerability from cvelistv5 – Published: 2026-06-22 21:18 – Updated: 2026-06-23 15:05
VLAI
EPSS
VEX
Title
MessagePack-CSharp: Denial of service vulnerabilities can swamp the CPU or crash the process with stack and heap overflows
Summary
MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePackReader.ReadDateTime() can allocate stack memory based on an attacker-controlled MessagePack extension length. In the slow path for timestamp extension parsing, the computed tokenSize includes the extension body length from the wire and is used in a stackalloc operation before the extension length is validated as one of the valid timestamp sizes. A very small payload can claim a large timestamp extension body and cause a stack allocation large enough to trigger an uncatchable StackOverflowException, terminating the host process. This vulnerability is fixed in 2.5.301 and 3.1.7.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 14:58 UTC
CWE
- CWE-125 - Out-of-bounds Read
- CWE-190 - Integer Overflow or Wraparound
- CWE-407 - Inefficient Algorithmic Complexity
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
- CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
- CWE-502 - Deserialization of Untrusted Data
- CWE-674 - Uncontrolled Recursion
- CWE-789 - Memory Allocation with Excessive Size Value
- CWE-1188 - Insecure Default Initialization of Resource
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/MessagePack-CSharp/MessagePack… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MessagePack-CSharp | MessagePack-CSharp |
Affected:
>= 3.1.7, < 3.1.7
Affected: < 2.5.301 |
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CVE-2026-47734 (GCVE-0-2026-47734)
Vulnerability from cvelistv5 – Published: 2026-06-10 22:11 – Updated: 2026-06-11 16:14
VLAI
EPSS
VEX
Title
Dulwich has unbounded memory allocation in receive-pack from crafted thin packs
Summary
Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.1.0 and prior to version 1.2.5, a client with push access could push a tiny crafted thin pack (~174 bytes) whose delta header declares a huge dest_size. When dulwich ingested it via add_thin_pack / apply_delta, it would allocate hundreds of MB of memory based on that attacker-controlled size, with no relationship to the actual bytes received. Operators running a Dulwich-based Git server that exposes git-receive-pack (i.e. accepts pushes) - for example via dulwich.server functionality, the HTTP smart server, or anything built on ReceivePackHandler - are impacted. The issue is patched in 1.2.5. add_thin_pack now accepts a max_input_size keyword (bytes; 0/None = unlimited, matching git's semantics), and ReceivePackHandler reads receive.maxInputSize from the repository config and passes it through. Wire reads are counted and a PackInputTooLarge exception is raised once the cap is exceeded - equivalent to git index-pack --max-input-size. Users should upgrade to Dulwich 1.2.5 or later and set receive.maxInputSize in their server's repository config to a sane bound for their environment. On unpatched versions, receive.maxInputSize has no effect, so it cannot be used as a workaround. Until upgrading, operators should restrict dulwich-receive-pack (push) access to trusted, authenticated clients only, or disable it entirely on servers that only need to serve fetches and/or run the server under an OS-level memory limit (e.g. ulimit, cgroups/MemoryMax, or a container memory limit) so a malicious push is killed rather than taking down the host.
Severity
5.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-11 14:08 UTC
CWE
Assigner
References
2 references
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| https://github.com/jelmer/dulwich/security/adviso… | x_refsource_CONFIRM |
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CVE-2026-47667 (GCVE-0-2026-47667)
Vulnerability from cvelistv5 – Published: 2026-07-21 19:57 – Updated: 2026-07-23 14:13
VLAI
EPSS
VEX
Title
CImg Library: Uncontrolled Memory Allocation and Memory Leak in `_load_analyze()` via Crafted NIfTI/Analyze Header
Summary
CImg Library is a C++ library for image processing. Prior to version 4.0.0 in `_load_analyze()`, the header_size field is read as an `unsigned int` from the first 4 bytes of an Analyze/NIfTI file and passed directly to `new unsigned char[header_size]` without being bounded against the actual file size. A value up to ~4 GB is accepted. If the subsequent `fread` returns `short` as it will for any malformed file), the function throws a `CImgIOException` and the allocated buffer is never freed. A 6-byte crafted file is sufficient to trigger an allocation of ~1.3 GB per call, with the full allocation leaked on every error path. The issue is reachable via `load_analyze()` and the generic `load()` when the file extension is .hdr, .img, or .nii. Version 4.0.0 fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-23 14:12 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/GreycLab/CImg/security/advisor… | x_refsource_CONFIRM |
| https://github.com/GreycLab/CImg/issues/480 | x_refsource_MISC |
| https://github.com/GreycLab/CImg/commit/6a69bf725… | x_refsource_MISC |
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CVE-2026-47319 (GCVE-0-2026-47319)
Vulnerability from cvelistv5 – Published: 2026-06-04 09:39 – Updated: 2026-06-08 05:31
VLAI
EPSS
VEX
Summary
Memory allocation with excessive size value vulnerability in Samsung Open Source rlottie allows Excessive Allocation.
This issue affects rlottie: before 0b4e308fa88c72cbb60cc8a2c1d2c2ad89b101dd.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-04 12:18 UTC
CWE
- CWE-789 - Memory allocation with excessive size value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | rlottie |
Unaffected:
0b4e308fa88c72cbb60cc8a2c1d2c2ad89b101dd
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CVE-2026-47313 (GCVE-0-2026-47313)
Vulnerability from cvelistv5 – Published: 2026-05-19 06:28 – Updated: 2026-05-19 13:18
VLAI
EPSS
VEX
Summary
Memory allocation with excessive size value vulnerability in Samsung Open Source Escargot allows Excessive Allocation.
This issue affects Escargot: 590345cc6258317c5da850d846ce6baaf2afc2d3.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 13:17 UTC
CWE
- CWE-789 - Memory allocation with excessive size value
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Samsung Open Source | Escargot |
Affected:
590345cc6258317c5da850d846ce6baaf2afc2d3
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CVE-2026-44967 (GCVE-0-2026-44967)
Vulnerability from cvelistv5 – Published: 2026-06-12 14:52 – Updated: 2026-06-12 16:10
VLAI
EPSS
VEX
Title
opentelemetry-cpp: OTLP HTTP exporters read unbounded HTTP response
Summary
OpenTelemetry-cpp is the C++ implementation of OpenTelemetry. Prior to release 1.27.0, the OTLP HTTP exporters (traces/metrics/logs) read the full HTTP response into an in-memory vector of bytes without a size cap. This is exploitable for memory exhaustion when the configured collector endpoint is attacker-controlled (or a network attacker can MITM the exporter connection). This vulnerability is fixed in opentelemetry-cpp release 1.27.0.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-12 16:10 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-c… | x_refsource_CONFIRM |
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-c… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-c… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-cpp |
Affected:
< 1.27.0
|
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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.