Common Weakness Enumeration

CWE-789

Allowed

Memory 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.

531 vulnerabilities reference this CWE, most recent first.

CVE-2026-67551 (GCVE-0-2026-67551)

Vulnerability from cvelistv5 – Published: 2026-08-05 05:27 – Updated: 2026-08-06 15:37
VLAI
Title
Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication
Summary
pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service. This issue affects Apache Qpid Proton-Dotnet: through 1.0.0. Users are recommended to upgrade to version 1.1.0, which fixes the issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 15:04 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 946 records in the last 180 days details
Impacted products
Show details on NVD website

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CVE-2026-67211 (GCVE-0-2026-67211)

Vulnerability from cvelistv5 – Published: 2026-09-11 17:49 – Updated: 2026-09-14 18:50
VLAI
Title
Apache OpenNLP: OOM DoS via Unbounded Array Allocation in SymSpellModelSerializer
Summary
OOM Denial of Service via Unbounded Map Pre-Sizing in Apache OpenNLP SymSpellModelSerializer Versions Affected: - 3.0.0-M4 - 3.0.0-M5 (The opennlp-spellcheck extension was introduced in 3.0.0-M4. Releases 1.x and 2.x do not contain the affected code.) Description: The SymSpellModelSerializer.create() method reads two 32-bit signed integer count fields (unigramCount and bigramCount) from a binary SymSpell model stream and passes each value directly to LinkedHashMap.newLinkedHashMap() after validating only that it is non-negative. No upper bound is applied, so the count is fully attacker-controlled when the model file originates from an untrusted source. A crafted .bin model file in which either count field is set to Integer.MAX_VALUE (or any value large enough to exhaust the available heap) causes the map to be pre-sized to a capacity of 2^30 entries. The oversized backing array is allocated on the first put() into that map, requesting 4–8 GB depending on whether compressed oops are in effect, and the load fails with an OutOfMemoryError. Because the count fields sit immediately after a fixed-size header (magic, format version, three UTF strings, the configuration fields, and the edit-distance identifier) the attacker pays no meaningful size cost to weaponize a payload: a file of well under 100 bytes plus a single real entry is sufficient to crash a JVM that loads it. Any code path that deserializes a SymSpell model is affected, including SymSpellModels.deserialize(InputStream), SymSpellModels.fromBytes(byte[]), classpath model loading via SymSpellModelResolver.resolveByLanguage(String), the CorrectTextTool command-line tool, and model-archive loading through the registered ArtifactSerializer. The opennlp-spellcheck extension ships in the official OpenNLP binary distribution. The practical impact is denial of service against processes that load SymSpell model files from untrusted or semi-trusted origins. Mitigation: - 3.x users should upgrade to 3.0.0-M6. Note: The fix applies an upper bound to both count fields, checked before the map is pre-sized; counts that are negative or exceed the bound cause an IOException to be thrown and the read to fail fast with no large allocation. The bound is the existing AbstractModelReader.MAX_ENTRIES limit introduced earlie, which the current change promotes to public visibility so that serializers implementing their own binary format can share it. The default bound is 10,000,000, which is well above the entry counts of legitimate SymSpell dictionaries but far below any value that would threaten heap exhaustion. Deployments that legitimately need to load larger dictionaries can raise the limit at JVM startup by setting the OPENNLP_MAX_ENTRIES system property to the desired positive integer (e.g. -DOPENNLP_MAX_ENTRIES=50000000); invalid or non-positive values fall back to the default. Note that this property is shared with the model-reader limit and raising it relaxes both. Users who cannot upgrade immediately should treat all SymSpell .bin model files as untrusted input unless their provenance is verified, and should avoid loading models supplied by end users or fetched from third-party repositories without integrity checks.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 18:49 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 946 records in the last 180 days details
Impacted products
Vendor Product Version
Apache Software Foundation Apache OpenNLP Affected: 3.0.0-M4 , < 3.0.0-M6 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-66733 (GCVE-0-2026-66733)

Vulnerability from cvelistv5 – Published: 2026-08-06 12:58 – Updated: 2026-08-06 17:54 X_Open Source
VLAI
Title
Sonic 3 A.I.R. Unbounded Memory Allocation DoS via ReceivedPacketCache
Summary
Sonic 3 A.I.R. before commit 2492d18 contains an unbounded memory allocation vulnerability in ReceivedPacketCache::enqueuePacket() that allows unauthenticated remote attackers to crash the server process by sending a crafted UDP packet with mUniquePacketID set to the maximum uint32 value. The mUniquePacketID field is read directly from the UDP wire-format packet header without bounds checking, causing the server to allocate one CacheItem per missing packet ID gap, exhausting available host memory and propagating an uncaught std::bad_alloc exception to std::terminate().
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 17:53 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
Impacted products
Vendor Product Version
Eukaryot sonic3air Affected: 0 , ≤ 26.03.28.0 (custom)
Unaffected: 2492d1882cd2cf1cc1d7415729ce5c4fd686cd4f (git)
Create a notification for this product.
Date Public
2026-07-29 00:00
Show details on NVD website

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CVE-2026-66485 (GCVE-0-2026-66485)

Vulnerability from cvelistv5 – Published: 2026-08-10 10:25 – Updated: 2026-08-10 10:56 X_Open Source
VLAI
Title
Uncontrolled Memory Allocation in GNU cpio
Summary
GNU cpio is vulnerable to an uncontrolled memory allocation in the make_path function at src/makepath.c. The function uses alloca to allocate stack memory based on the length of argpath, which is derived from an archive-controlled pathname during extraction. A malicious cpio archive containing a sufficiently long nested pathname causes an unbounded stack allocation, resulting in a stack overflow and crash of the cpio process. An attacker who can supply a crafted cpio archive to a victim who extracts it can cause a denial of service. This issue has been fixed in commit 3cd514031371d8aeeaf2048aa10103e02831aaa9
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 10:56 UTC
CWE
  • CWE-789 - Memory allocation with excessive size value
Assigner
CERT-PL CNA under the ENISA root
CNA scorecard B 81/100 over 222 records in the last 180 days details
References
Impacted products
Vendor Product Version
GNU cpio Affected: 0 , ≤ 2.15 (custom)
    cpe:2.3:a:gnu:cpio:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-66273 (GCVE-0-2026-66273)

Vulnerability from cvelistv5 – Published: 2026-08-05 05:23 – Updated: 2026-08-06 13:48
VLAI
Title
Apache Qpid Proton-J: Type size/count handling can lead to excessive allocation pre-authentication
Summary
A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service. This issue affects Apache Qpid Proton-J: through 0.34.1. Users are recommended to upgrade to version 0.35.0, which fixes the issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 13:48 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 946 records in the last 180 days details
Impacted products
Vendor Product Version
Apache Software Foundation Apache Qpid Proton-J Affected: 0 , ≤ 0.34.1 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-65315 (GCVE-0-2026-65315)

Vulnerability from cvelistv5 – Published: 2026-07-21 21:18 – Updated: 2026-09-24 14:18
VLAI
Title
Ollama Remote Denial of Service via Attacker-Controlled Allocation in GGUF Metadata Parser
Summary
Ollama (HEAD f0078ae) contains an uncontrolled memory allocation vulnerability in the GGUF metadata parser that allows remote attackers to crash the server by supplying a crafted GGUF file with attacker-controlled length and count fields in string lengths, tensor dimension counts, and metadata array counts that are used as allocation sizes without validation against remaining file size. Attackers can upload a sub-1KB crafted GGUF file via the blob upload and model create or pull API endpoints to trigger unrecoverable Go runtime out-of-memory fatal errors or makeslice panics that bypass recovery middleware and crash the entire server process.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 18:21 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
Impacted products
Vendor Product Version
Ollama Ollama Affected: 0 , ≤ f0078ae (git)
    cpe:2.3:a:ollama:ollama:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-07-21 00:00
Show details on NVD website

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CVE-2026-63574 (GCVE-0-2026-63574)

Vulnerability from cvelistv5 – Published: 2026-10-02 07:06 – Updated: 2026-10-02 19:23
VLAI
Title
Unbounded allocation from OpenPGP signature and user attribute subpacket lengths
Summary
Memory allocation with excessive size value in the OpenPGP signature and user attribute subpacket parsers (SignatureSubpacketsParser.ReadPacket, UserAttributeSubpacketsParser.ReadPacket) in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote, unauthenticated attacker who can supply a crafted OpenPGP public key, certificate or signature to cause a denial of service (OutOfMemoryException or memory exhaustion in the parsing process) via a subpacket header using the five-octet length form, because the declared length was used to size the subpacket buffer with no upper bound and without being compared with the size of the enclosing subpacket area or packet, so a few bytes of input could demand an allocation of up to about 2 GB before any subpacket data was read.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 19:23 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
bcorg CNA under the mitre root
CNA scorecard B 84/100 over 74 records in the last 180 days details
Impacted products
Vendor Product Version
Legion of the Bouncy Castle Inc. bc-csharp Affected: 0 , < 2.7.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-63566 (GCVE-0-2026-63566)

Vulnerability from cvelistv5 – Published: 2026-10-02 06:57 – Updated: 2026-10-02 18:08
VLAI
Title
DTLS handshake reassembler allocates buffer from unchecked 24-bit length
Summary
Memory allocation with excessive size value in the DTLS handshake reassembly (DtlsReliableHandshake, DtlsReassembler) in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows a remote unauthenticated DTLS peer to cause a denial of service through memory exhaustion via crafted handshake message fragments, because the reassembly buffer for each incoming handshake message was allocated at the 24-bit length declared in the fragment header, without the check against the peer's maximum handshake message size that TLS already applied. A fragment carrying no payload can force an allocation of almost 16 MB, for each of up to 16 pending messages per handshake, before the handshake is authenticated. DTLS servers and DTLS clients are both affected; TLS is not.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 18:07 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
bcorg CNA under the mitre root
CNA scorecard B 84/100 over 74 records in the last 180 days details
Impacted products
Vendor Product Version
Legion of the Bouncy Castle Inc. bc-csharp Affected: 0 , < 2.7.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-62370 (GCVE-0-2026-62370)

Vulnerability from cvelistv5 – Published: 2026-09-21 17:07 – Updated: 2026-09-29 15:04
VLAI
Title
KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub
Summary
KubeEdge is an open source system for extending native containerized application orchestration capabilities to hosts at Edge. From 1.0.0 until 1.21.2, 1.22.2, and 1.23.1, Reader.Read in pkg/viaduct/pkg/packer trusts the 32-bit PackageHeader.PayloadLen received through the CloudHub viaduct message-processing path and allocates that amount of memory before validating an upper bound. An authenticated malicious or compromised edge peer can repeatedly send crafted headers with excessive declared lengths, causing memory exhaustion, CloudHub process termination or restart loops, and temporary disruption of cloud-edge communication. This issue does not provide unauthenticated access or direct code execution. This issue is fixed in versions 1.21.2, 1.22.2, and 1.23.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:03 UTC
CWE
  • CWE-789 - Memory Allocation with Excessive Size Value
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
Impacted products
Vendor Product Version
kubeedge kubeedge Affected: >= 1.0.0, < 1.21.2
Affected: >= 1.22.0, < 1.22.2
Affected: >= 1.23.0, < 1.23.1
Create a notification for this product.
Show details on NVD website

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          "name": "https://github.com/kubeedge/kubeedge/releases/tag/v1.23.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kubeedge/kubeedge/releases/tag/v1.23.1"
        }
      ],
      "source": {
        "advisory": "GHSA-gfw4-49f9-cp25",
        "discovery": "UNKNOWN"
      },
      "title": "KubeEdge: Unbounded allocation in viaduct packer enables authenticated remote DoS against CloudHub"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-62370",
    "datePublished": "2026-09-21T17:07:31.398Z",
    "dateReserved": "2026-07-13T22:04:59.678Z",
    "dateUpdated": "2026-09-29T15:04:07.804Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-61485 (GCVE-0-2026-61485)

Vulnerability from cvelistv5 – Published: 2026-08-05 06:43 – Updated: 2026-09-04 15:57
VLAI

this attack requires control over the search index, which is considered fully trusted by Lucy.

Show details on NVD website

{
  "containers": {
    "cna": {
      "providerMetadata": {
        "dateUpdated": "2026-09-04T15:57:30.493Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "rejectedReasons": [
        {
          "lang": "en",
          "value": "this attack requires control over the search index, which is considered fully trusted by Lucy."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
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  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2026-61485",
    "datePublished": "2026-08-05T06:43:27.608Z",
    "dateRejected": "2026-09-04T15:57:30.493Z",
    "dateReserved": "2026-07-10T12:23:21.927Z",
    "dateUpdated": "2026-09-04T15:57:30.493Z",
    "state": "REJECTED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.