Common Weakness Enumeration
CWE-502
AllowedDeserialization of Untrusted Data
Abstraction: Base · Status: Draft
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
5189 vulnerabilities reference this CWE, most recent first.
CVE-2026-48560 (GCVE-0-2026-48560)
Vulnerability from cvelistv5 – Published: 2026-06-09 17:05 – Updated: 2026-08-25 22:44
VLAI
EPSS
VEX
Title
Microsoft SharePoint Server Spoofing Vulnerability
Summary
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 17:48 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |
Affected:
16.0.0 , < 16.0.5556.1005
(custom)
|
|
| Microsoft | Microsoft SharePoint Server 2019 |
Affected:
16.0.0 , < 16.0.10417.20153
(custom)
|
|
| Microsoft | Microsoft SharePoint Server Subscription Edition |
Affected:
16.0.0 , < 16.0.19725.20384
(custom)
|
Date Public
2026-06-09 14:00
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CVE-2026-48517 (GCVE-0-2026-48517)
Vulnerability from cvelistv5 – Published: 2026-06-22 21:03 – Updated: 2026-06-25 15:55
VLAI
EPSS
VEX
Title
MessagePack-CSharp: Typeless deserialization type restrictions do not recurse into arrays or generic arguments
Summary
MessagePack for C# is a MessagePack serializer for C#. Prior to 2.5.301 and 3.1.7, MessagePack-CSharp's typeless deserialization includes MessagePackSerializerOptions.ThrowIfDeserializingTypeIsDisallowed(Type) as a safety check for dangerous types. The default implementation checks the outer type name, but it does not recursively inspect array element types or generic type arguments. As a result, a type that would be blocked directly can be wrapped inside an array or constructed generic type and pass the outer type check. The formatter machinery can then materialize formatters for the inner blocked type. 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 15:05 UTC
CWE
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:
>= 3.0, < 3.1.7
Affected: < 2.5.301 |
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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-2026-48397 (GCVE-0-2026-48397)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:45 – Updated: 2026-08-27 22:34
VLAI
EPSS
VEX
Title
Lightroom Classic | Deserialization of Untrusted Data (CWE-502)
Summary
Lightroom Classic is affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue requires user interaction in that a victim must open a malicious file. Scope is changed.
Severity
8.6 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 04:00 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data (CWE-502)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/lightro… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Lightroom Classic |
Affected:
0 , ≤ 15.4.1
(semver)
Unaffected: 15.5 (semver) |
Date Public
2026-08-11 17:00
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CVE-2026-48207 (GCVE-0-2026-48207)
Vulnerability from cvelistv5 – Published: 2026-05-21 15:51 – Updated: 2026-05-21 18:37
VLAI
EPSS
VEX
Title
Apache Fory: PyFory ReduceSerializer Incomplete Policy Enforcement
Summary
Deserialization of untrusted data in Apache Fory PyFory. PyFory's ReduceSerializer could bypass documented DeserializationPolicy validation hooks during reduce-state restoration and global-name resolution. An application is vulnerable if it deserializes attacker-controlled data using PyFory Python-native mode with strict mode disabled and relies on DeserializationPolicy to restrict unsafe classes, functions, or module attributes.
This issue affects Apache Fory: from before 1.0.0.
Mitigation: Users of Apache Fory are recommended to upgrade to version 1.0.0 or later, which enforces DeserializationPolicy validation for the affected ReduceSerializer paths and thus fixes this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-21 17:10 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://fory.apache.org/security/#cve-2026-48207-… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Fory |
Affected:
0.13.0 , < 1.0.0
(semver)
|
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CVE-2026-47623 (GCVE-0-2026-47623)
Vulnerability from cvelistv5 – Published: 2026-08-04 17:33 – Updated: 2026-08-04 17:58
VLAI
EPSS
VEX
Summary
NVIDIA Dynamo for Linux contains a vulnerability where an attacker could cause deserialization of untrusted data. A successful exploit of this vulnerability might lead to denial of service and data tampering.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 17:58 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
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CVE-2026-47472 (GCVE-0-2026-47472)
Vulnerability from cvelistv5 – Published: 2026-07-14 20:01 – Updated: 2026-07-15 14:11
VLAI
EPSS
VEX
Summary
NVIDIA TensorRT-LLM contains a vulnerability in its inter-process communication layer where an attacker with local same-user access could cause deserialization. A successful exploit of this vulnerability might lead to code execution, information disclosure, data tampering, and denial of service.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 14:11 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NVIDIA | TensorRT-LLM |
Affected:
0.0 , ≤ v1.3.0 rc16
(custom)
|
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CVE-2026-47161 (GCVE-0-2026-47161)
Vulnerability from cvelistv5 – Published: 2026-05-27 18:31 – Updated: 2026-05-28 12:59
VLAI
EPSS
VEX
Title
RELATE Vulnerable to Remote Code Execution (RCE) via Insecure Celery Pickle Deserialization
Summary
RELATE is a web-based courseware package. Prior to commit d66ba5659b459bf1ba56b7109b5f9ecf197cbefb, RELATE LMS configures its Celery workers to accept and deserialize untrusted 'pickle' data. An attacker who can reach the message broker can execute arbitrary commands on the host server. Combined with missing network isolation in the code execution sandbox, this allows an authenticated student to achieve full Remote Code Execution (RCE) on the host system. Commit d66ba5659b459bf1ba56b7109b5f9ecf197cbefb fixes the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-28 12:59 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/inducer/relate/security/adviso… | x_refsource_CONFIRM |
| https://github.com/inducer/relate/commit/d66ba565… | x_refsource_MISC |
Impacted products
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CVE-2026-47065 (GCVE-0-2026-47065)
Vulnerability from cvelistv5 – Published: 2026-06-03 09:39 – Updated: 2026-06-04 03:55
VLAI
EPSS
VEX
Title
Apache MINA: Critical Deserialization Allow-list Bypass via resolveProxyClass - ZDRES-232
Summary
ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy
Assessment: Fully addressed.
When the serialised stream contains a TC_PROXYCLASSDESC (the marker
for a java.lang.reflect.Proxy ), JDK’s ObjectInputStream.readProxyDesc()
is
dispatched. JDK then calls the default
ObjectInputStream.resolveProxyClass(interfaces) implementation, which
performs Class.forName(intf, false, latestUserDefinedLoader()) for EACH
interface name and constructs the proxy class — bypassing the accepted
classes list .
ZDRES-233: Class.forName(name, initialize=true, classLoader) in
readClassDescriptor Triggers Static Initialiser of Allow-Listed Classes
Assessment: Fully addressed.
For ANY class on the allow-list, deserialising a stream that names it triggers the class’s
(static initialiser) BEFORE any instance is constructed. This means an
attacker who supplies a class name on the allow-list (e.g., the
developer wrote accept(“com.myapp.*") , attacker supplies
com.myapp.SomeClass ) causes <clinit> of SomeClass — and many
real-world classes have side-effecting static initialisers
Both issues have been fixed.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 00:00 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/y7xj1bl8qo47p9bkt… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache MINA |
Affected:
2.2.0 , < 2.2.8
(semver)
Affected: 2.1.0 , < 2.1.13 (semver) Affected: 2.0.0 , < 2.0.29 (semver) |
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CVE-2026-46725 (GCVE-0-2026-46725)
Vulnerability from cvelistv5 – Published: 2026-05-19 09:25 – Updated: 2026-05-19 13:29
VLAI
EPSS
VEX
Title
Remote Code Execution in extension "Content Element Selector" (ceselector)
Summary
The extension passes an attacker-controlled cookie directly to PHP's unserialize() without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with "Persistent Mode: Static" in the plugin settings.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 13:28 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://typo3.org/security/advisory/typo3-ext-sa-… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TYPO3 | Extension "Content Element Selector" |
Affected:
6.0.0 , < 6.0.1
(semver)
Affected: 5.0.0 , < 5.0.1 (semver) Affected: 4.0.0 , < 4.0.2 (semver) Affected: 0 , < 3.0.3 (semver) |
Date Public
2026-05-19 09:00
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Mitigation
Architecture and Design
Implementation
If available, use the signing/sealing features of the programming language to assure that deserialized data has not been tainted. For example, a hash-based message authentication code (HMAC) could be used to ensure that data has not been modified.
Mitigation
Implementation
When deserializing data, populate a new object rather than just deserializing. The result is that the data flows through safe input validation and that the functions are safe.
Mitigation
Implementation
Explicitly define a final object() to prevent deserialization.
Mitigation
Architecture and Design
Implementation
- Make fields transient to protect them from deserialization.
- An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.
Mitigation
Implementation
Avoid having unnecessary types or gadgets (a sequence of instances and method invocations that can self-execute during the deserialization process, often found in libraries) available that can be leveraged for malicious ends. This limits the potential for unintended or unauthorized types and gadgets to be leveraged by the attacker. Add only acceptable classes to an allowlist. Note: new gadgets are constantly being discovered, so this alone is not a sufficient mitigation.
Mitigation
Architecture and Design
Implementation
Employ cryptography of the data or code for protection. However, it's important to note that it would still be client-side security. This is risky because if the client is compromised then the security implemented on the client (the cryptography) can be bypassed.
Mitigation MIT-29
Operation
Strategy: Firewall
Use an application firewall that can detect attacks against this weakness. It can be beneficial in cases in which the code cannot be fixed (because it is controlled by a third party), as an emergency prevention measure while more comprehensive software assurance measures are applied, or to provide defense in depth [REF-1481].
CAPEC-586: Object Injection
An adversary attempts to exploit an application by injecting additional, malicious content during its processing of serialized objects. Developers leverage serialization in order to convert data or state into a static, binary format for saving to disk or transferring over a network. These objects are then deserialized when needed to recover the data/state. By injecting a malformed object into a vulnerable application, an adversary can potentially compromise the application by manipulating the deserialization process. This can result in a number of unwanted outcomes, including remote code execution.