CWE-789
Memory Allocation with Excessive Size Value
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.
CVE-2026-32836 (GCVE-0-2026-32836)
Vulnerability from cvelistv5 – Published: 2026-03-17 19:10 – Updated: 2026-04-29 14:33
VLAI
Title
mackron / dr_libs dr_flac.h Excessive Memory Allocation in PICTURE Metadata Parsing
Summary
dr_libs dr_flac.h version 0.13.3 and earlier (fixed in commits fefced4, 4f5a4cd, and 663239a) contain an uncontrolled memory allocation vulnerability in drflac__read_and_decode_metadata() that allows attackers to trigger excessive memory allocation by supplying crafted PICTURE metadata blocks. Attackers can exploit attacker-controlled mimeLength and descriptionLength fields to cause denial of service through memory exhaustion when processing FLAC streams with metadata callbacks.
Severity
6.2 (Medium)
CWE
- CWE-789 - Memory allocation with excessive size value
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/mackron/dr_libs/issues/298 | issue-tracking |
| https://github.com/mackron/dr_libs/commit/fefced4… | patch |
| https://github.com/mackron/dr_libs/commit/4f5a4cd… | patch |
| https://github.com/mackron/dr_libs/commit/663239a… | patch |
| https://www.vulncheck.com/advisories/mackron-dr-l… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mackron | dr_libs dr_flac.h |
Affected:
0 , ≤ 0.13.3
(semver)
Unaffected: fefced4a64adfb1a68a2d31d882366e56096dee8 (git) Unaffected: 4f5a4cd3b57564d969443c580c75857e039f100a (git) Unaffected: 663239a3d0460c33bd5b6e5166edcb404e3df676 (git) |
Credits
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CVE-2026-32941 (GCVE-0-2026-32941)
Vulnerability from cvelistv5 – Published: 2026-03-20 03:37 – Updated: 2026-03-21 02:53
VLAI
Title
Sliver Vulnerable to Authenticated OOM via Memory Exhaustion in mTLS/WireGuard Transports
Summary
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Severity
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/BishopFox/sliver/security/advi… | x_refsource_CONFIRM |
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CVE-2026-33174 (GCVE-0-2026-33174)
Vulnerability from cvelistv5 – Published: 2026-03-23 23:24 – Updated: 2026-03-24 13:40
VLAI
Title
Rails Active Storage has a possible DoS vulnerability when in proxy mode via Range requests
Summary
Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, when serving files through Active Storage's proxy delivery mode, the proxy controller loads the entire requested byte range into memory before sending it. A request with a large or unbounded Range header (e.g. `bytes=0-`) could cause the server to allocate memory proportional to the file size, possibly resulting in a DoS vulnerability through memory exhaustion. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
Severity
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/rails/rails/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/rails/rails/commit/2cd933c366b… | x_refsource_MISC |
| https://github.com/rails/rails/commit/42012eaaa88… | x_refsource_MISC |
| https://github.com/rails/rails/commit/8159a9c3de3… | x_refsource_MISC |
| https://github.com/rails/rails/releases/tag/v7.2.3.1 | x_refsource_MISC |
| https://github.com/rails/rails/releases/tag/v8.0.4.1 | x_refsource_MISC |
| https://github.com/rails/rails/releases/tag/v8.1.2.1 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| rails | activestorage |
Affected:
>= 8.1.0.beta1, < 8.1.2.1
Affected: >= 8.0.0.beta1, < 8.0.4.1 Affected: < 7.2.3.1 |
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CVE-2026-33524 (GCVE-0-2026-33524)
Vulnerability from cvelistv5 – Published: 2026-04-24 18:18 – Updated: 2026-04-27 13:35
VLAI
Title
Zserio: Integer Overflow in BitStreamReader and Unbounded Memory Allocation in Deserialization
Summary
Zserio is a framework for serializing structured data with a compact and efficient way with low overhead. Prior to 2.18.1, a crafted payload as small as 4-5 bytes can force memory allocations of up to 16 GB, crashing any process with an OOM error (Denial of Service). This vulnerability is fixed in 2.18.1.
Severity
7.5 (High)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ndsev/zserio/security/advisori… | x_refsource_CONFIRM |
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CVE-2026-35186 (GCVE-0-2026-35186)
Vulnerability from cvelistv5 – Published: 2026-04-09 18:54 – Updated: 2026-04-13 20:18
VLAI
Title
Wasmtime has an improperly masked return value from `table.grow` with Winch compiler backend
Summary
Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's Winch compiler backend contains a bug where translating the table.grow operator causes the result to be incorrectly typed. For 32-bit tables this means that the result of the operator, internally in Winch, is tagged as a 64-bit value instead of a 32-bit value. This invalid internal representation of Winch's compiler state compounds into further issues depending on how the value is consumed. The primary consequence of this bug is that bytes in the host's address space can be stored/read from. This is only applicable to the 16 bytes before linear memory, however, as the only significant return value of table.grow that can be misinterpreted is -1. The bytes before linear memory are, by default, unmapped memory. Wasmtime will detect this fault and abort the process, however, because wasm should not be able to access these bytes. Overall this this bug in Winch represents a DoS vector by crashing the host process, a correctness issue within Winch, and a possible leak of up to 16-bytes before linear memory. Wasmtime's default compiler is Cranelift, not Winch, and Wasmtime's default settings are to place guard pages before linear memory. This means that Wasmtime's default configuration is not affected by this issue, and when explicitly choosing Winch Wasmtime's otherwise default configuration leads to a DoS. Disabling guard pages before linear memory is required to possibly leak up to 16-bytes of host data. This vulnerability is fixed in 36.0.7, 42.0.2, and 43.0.1.
Severity
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/bytecodealliance/wasmtime/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytecodealliance | wasmtime |
Affected:
>= 25.0.0, < 36.0.7
Affected: >= 37.0.0, < 42.0.2 Affected: >= 43.0.0, < 44.0.1 |
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CVE-2026-35549 (GCVE-0-2026-35549)
Vulnerability from cvelistv5 – Published: 2026-04-03 05:00 – Updated: 2026-04-03 14:34
VLAI
Summary
An issue was discovered in MariaDB Server before 11.4.10, 11.5.x through 11.8.x before 11.8.6, and 12.x before 12.2.2. If the caching_sha2_password authentication plugin is installed, and some user accounts are configured to use it, a large packet can crash the server because sha256_crypt_r uses alloca.
Severity
6.5 (Medium)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
Impacted products
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CVE-2026-35633 (GCVE-0-2026-35633)
Vulnerability from cvelistv5 – Published: 2026-04-09 21:27 – Updated: 2026-04-14 03:10 X_Open Source
VLAI
Title
OpenClaw < 2026.3.22 - Unbounded Memory Allocation via Remote Media Error Responses
Summary
OpenClaw before 2026.3.22 contains an unbounded memory allocation vulnerability in remote media HTTP error handling that allows attackers to trigger excessive memory consumption. Attackers can send crafted HTTP error responses with large bodies to remote media endpoints, causing the application to allocate unbounded memory before failure handling occurs.
Severity
5.3 (Medium)
CWE
- CWE-789 - Uncontrolled Memory Allocation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/openclaw/openclaw/security/adv… | third-party-advisory |
| https://github.com/openclaw/openclaw/commit/630f1… | patch |
| https://github.com/openclaw/openclaw/commit/81445… | patch |
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Impacted products
Date Public
2026-03-24 00:00
Credits
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CVE-2026-39312 (GCVE-0-2026-39312)
Vulnerability from cvelistv5 – Published: 2026-04-07 16:52 – Updated: 2026-04-07 17:27
VLAI
Title
Pre-Auth EAP-TLS DoS on SoftEther VPN Developer Edition
Summary
SoftEtherVPN is a an open-source cross-platform multi-protocol VPN Program. In 5.2.5188 and earlier, a pre-authentication denial-of-service vulnerability exists in SoftEther VPN Developer Edition 5.2.5188 (and likely earlier versions of Developer Edition). An unauthenticated remote attacker can crash the vpnserver process by sending a single malformed EAP-TLS packet over raw L2TP (UDP/1701), terminating all active VPN sessions.
Severity
7.5 (High)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/SoftEtherVPN/SoftEtherVPN/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SoftEtherVPN | SoftEtherVPN |
Affected:
<= 5.2.5188
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CVE-2026-39882 (GCVE-0-2026-39882)
Vulnerability from cvelistv5 – Published: 2026-04-08 20:24 – Updated: 2026-04-09 20:22
VLAI
Title
OpenTelemetry-Go OTLP HTTP exporters read unbounded HTTP response bodies
Summary
OpenTelemetry-Go is the Go implementation of OpenTelemetry. Prior to 1.43.0, the otlp HTTP exporters (traces/metrics/logs) read the full HTTP response body into an in-memory bytes.Buffer 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 1.43.0.
Severity
5.3 (Medium)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_CONFIRM |
| https://github.com/open-telemetry/opentelemetry-g… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-go |
Affected:
< 1.43.0
|
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CVE-2026-40182 (GCVE-0-2026-40182)
Vulnerability from cvelistv5 – Published: 2026-04-23 17:51 – Updated: 2026-04-23 18:38
VLAI
Title
OpenTelemetry dotnet: OTLP exporter reads unbounded HTTP response bodies
Summary
OpenTelemetry dotnet is a dotnet telemetry framework. From 1.13.1 to before 1.15.2, When exporting telemetry to a back-end/collector over gRPC or HTTP using OpenTelemetry Protocol format (OTLP), if the request results in a unsuccessful request (i.e. HTTP 4xx or 5xx), the response is read into memory with no upper-bound on the number of bytes consumed. This could cause memory exhaustion in the consuming application if the configured back-end/collector endpoint is attacker-controlled (or a network attacker can MitM the connection) and an extremely large body is returned by the response. This vulnerability is fixed in 1.15.2.
Severity
5.3 (Medium)
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/open-telemetry/opentelemetry-d… | x_refsource_CONFIRM |
| https://github.com/open-telemetry/opentelemetry-d… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-d… | x_refsource_MISC |
| https://github.com/open-telemetry/opentelemetry-p… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-telemetry | opentelemetry-dotnet |
Affected:
>= 1.13.1, < 1.15.2
|
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Mitigation
Phases: Implementation, Architecture and Design
Description:
- 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
Phase: Operation
Description:
- 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.