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.
5801 vulnerabilities reference this CWE, most recent first.
CVE-2026-84834 (GCVE-0-2026-84834)
Vulnerability from cvelistv5 – Published: 2026-09-03 16:31 – Updated: 2026-09-07 11:17
VLAI
EPSS
VEX
Title
WordPress JobSearch plugin <= 3.2.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in JobSearch <= 3.2.0 versions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-07 10:59 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
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CVE-2026-84832 (GCVE-0-2026-84832)
Vulnerability from cvelistv5 – Published: 2026-09-03 08:45 – Updated: 2026-10-08 11:16
VLAI
EPSS
VEX
Title
Unsafe deserialization in the REST interface
Summary
SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 12:32 UTC
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SEPPmail AG | SEPPmail Secure Email Gateway (SEG) |
Affected:
0 , < 15.0.6
(custom)
|
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CVE-2026-84753 (GCVE-0-2026-84753)
Vulnerability from cvelistv5 – Published: 2026-09-03 16:31 – Updated: 2026-09-05 01:49
VLAI
EPSS
VEX
Title
WordPress Mail Mint plugin <= 1.31.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Mail Mint <= 1.31.0 versions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-05 01:48 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
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CVE-2026-84752 (GCVE-0-2026-84752)
Vulnerability from cvelistv5 – Published: 2026-09-03 16:31 – Updated: 2026-09-03 17:35
VLAI
EPSS
VEX
Title
WordPress RTMKit plugin <= 2.1.5 - PHP Object Injection vulnerability
Summary
Contributor PHP Object Injection in RTMKit <= 2.1.5 versions.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 17:35 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
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CVE-2026-84202 (GCVE-0-2026-84202)
Vulnerability from cvelistv5 – Published: 2026-09-01 15:18 – Updated: 2026-09-01 17:37
VLAI
EPSS
VEX
Title
ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading
Summary
ModelScope uses PyYAML's unsafe yaml.Loader to parse model configuration files, allowing arbitrary code execution through Python object construction tags. Attackers can craft malicious model repositories with poisoned configuration files that execute code when loaded by users.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 17:36 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/modelscope/modelscope | product |
| https://github.com/modelscope/modelscope/issues/1660 | issue-tracking |
| https://github.com/modelscope/modelscope/blob/v1.… | technical-description |
| https://github.com/modelscope/modelscope/blob/v1.… | technical-description |
| https://www.vulncheck.com/advisories/modelscope-t… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| modelscope | modelscope |
Affected:
0 , ≤ 1.40.0
(semver)
|
Date Public
2026-03-30 00:00
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CVE-2026-83803 (GCVE-0-2026-83803)
Vulnerability from cvelistv5 – Published: 2026-09-22 16:24 – Updated: 2026-09-22 17:43
VLAI
EPSS
VEX
Title
Sentry: Unsafe pickle deserialization in Relocation Feature
Summary
Sentry is an error tracking and performance monitoring tool. From 23.11.0 until 26.7.0, Sentry instances with the relocation feature enabled unsafely deserialize a legacy database field while importing a user-supplied relocation archive. An authenticated user can craft an archive that causes arbitrary code execution in the import worker process. Self-hosted installations using the default configuration are not affected because the relocation feature is disabled by default. This issue is fixed in version 26.7.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 17:35 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/getsentry/sentry/security/advi… | x_refsource_CONFIRM |
| https://github.com/getsentry/sentry/pull/119622 | x_refsource_MISC |
| https://github.com/getsentry/sentry/commit/d7fd44… | x_refsource_MISC |
| https://github.com/getsentry/sentry/releases/tag/26.7.0 | x_refsource_MISC |
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CVE-2026-83603 (GCVE-0-2026-83603)
Vulnerability from cvelistv5 – Published: 2026-09-22 17:01 – Updated: 2026-09-22 17:43
VLAI
EPSS
VEX
Title
Netdata: Local Root via ndsudo Arbitrary socket_path → fail2ban-client Pickle RCE
Summary
Netdata is an open source observability tool. Prior to 2.10.4, the setuid-root ndsudo helper command fail2ban-client-status-socket in src/collectors/utils/ndsudo.c accepts a caller-controlled --socket_path from the low-privileged netdata service account. The account can direct root fail2ban-client to a malicious UNIX socket, and fail2ban/client/csocket.py CSocket.receive() passes the returned data to pickle.loads(), allowing attacker-controlled code to execute as root on systems with fail2ban-client installed. This issue is fixed in version 2.10.4 and nightly build 2.10.0-782-nightly.
Severity
8.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-22 17:35 UTC
Assigner
References
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| URL | Tags |
|---|---|
| https://github.com/netdata/netdata/security/advis… | x_refsource_CONFIRM |
| https://github.com/netdata/netdata/pull/22745 | x_refsource_MISC |
| https://github.com/netdata/netdata/commit/9bced8d… | x_refsource_MISC |
| https://github.com/netdata/netdata/releases/tag/v2.10.4 | x_refsource_MISC |
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CVE-2026-83557 (GCVE-0-2026-83557)
Vulnerability from cvelistv5 – Published: 2026-09-01 14:57 – Updated: 2026-09-01 17:46
VLAI
EPSS
VEX
Title
jackson-databind omits java.lang.Comparable from DefaultBaseTypeLimitingValidator's unsafe base types
Summary
DefaultBaseTypeLimitingValidator is the PolymorphicTypeValidator applied automatically whenever @JsonTypeInfo is used without an explicitly configured custom validator. It denies polymorphic resolution only for a fixed set of "unsafe base types", and its isSafeSubType method returns true unconditionally for every base type outside that set. java.lang.Comparable was absent from the list despite being implemented by a very large fraction of JDK and application classes, comparable in breadth to java.io.Serializable, which is on the list for that reason. An application declaring an @JsonTypeInfo-annotated property or class with Comparable as its base type, and no custom PolymorphicTypeValidator, will accept a type identifier for essentially any class implementing Comparable. This yields an attacker-controlled object instantiation primitive; a demonstrated case constructs a java.io.File for an arbitrary attacker-chosen path, which becomes path-traversal-adjacent if the application subsequently calls path-sensitive methods on the value. No class implementing Comparable has been identified that yields code execution through deserialization alone. Global Default Typing via activateDefaultTyping is not affected, because that method structurally requires an explicit PolymorphicTypeValidator argument. This affects com.fasterxml.jackson.core:jackson-databind from 2.11.0 before 2.18.10, from 2.19.0 before 2.21.6, and from 2.22.0 before 2.22.2, and tools.jackson.core:jackson-databind from 3.0.0 before 3.1.6 and from 3.2.0 before 3.2.2. Users should upgrade to 2.18.10, 2.21.6, 2.22.2, 3.1.6, or 3.2.2.
Severity
5.6 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 17:46 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/FasterXML/jackson-databind/sec… | third-party-advisory |
| https://github.com/FasterXML/jackson-databind/pull/6155 | patchissue-tracking |
| https://github.com/FasterXML/jackson-databind/iss… | issue-tracking |
| https://github.com/FasterXML/jackson-databind/com… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| FasterXML | jackson-databind |
Affected:
2.11.0 , < 2.18.10
(maven)
Affected: 2.19.0 , < 2.21.6 (maven) Affected: 2.22.0 , < 2.22.2 (maven) |
|
| FasterXML | jackson-databind |
Affected:
3.0.0 , < 3.1.6
(maven)
Affected: 3.2.0 , < 3.2.2 (maven) |
Date Public
2026-09-01 00:00
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CVE-2026-83520 (GCVE-0-2026-83520)
Vulnerability from cvelistv5 – Published: 2026-10-13 19:01 – Updated: 2026-10-20 22:20
VLAI
EPSS
VEX
Title
.NET Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-08 00:00 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
14 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | .NET 10.0 |
Affected:
10.0.0 , < 10.0.13
(custom)
|
|
| Microsoft | .NET 11.0 |
Affected:
11.0.0 , < 11.0.0-rc.2
(custom)
|
|
| Microsoft | .NET 8.0 |
Affected:
8.0.0 , < 8.0.32
(custom)
|
|
| Microsoft | .NET 9.0 |
Affected:
9.0.0 , < 9.0.21
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 |
Affected:
3.5.0 , < 2.0.50727.9188 AND 3.0.30729.9171
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 |
Affected:
3.0.0.0 , < 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 |
Affected:
4.7.0 , < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 |
Affected:
4.8.0 , < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 |
Affected:
4.8.1 , < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 |
Affected:
4.7.0 , < 4.7.4150.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 4.8 |
Affected:
4.8.0 , < 4.8.4811.0
(custom)
|
|
| Microsoft | Microsoft .NET Framework 4.8.1 |
Affected:
4.8.0.0 , < 4.8.9363.0
(custom)
|
|
| Microsoft | Microsoft Visual Studio 2022 version 17.14 |
Affected:
17.14.0 , < 17.14.42
(custom)
|
|
| Microsoft | Microsoft Visual Studio 2026 version 18.10 |
Affected:
18.10.0 , < 18.10.4
(custom)
|
Date Public
2026-10-13 14:00
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CVE-2026-83497 (GCVE-0-2026-83497)
Vulnerability from cvelistv5 – Published: 2026-08-31 18:36 – Updated: 2026-09-01 14:03
VLAI
EPSS
VEX
Title
Unrestricted Java Deserialization in OpenSearch SQL Plugin Cursor Pagination
Summary
Unrestricted deserialization of untrusted data in the cursor pagination component in the OpenSearch SQL plugin allows a remote authenticated user with basic read/search permissions to execute arbitrary code on the server by sending a crafted cursor parameter to the plugins/sql endpoint.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-01 14:03 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://opensearch.org/artifacts/by-version/#rele… | patchrelease-notes |
| https://opensearch.org/artifacts/by-version/#rele… | patchrelease-notes |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| OpenSearch | OpenSearch |
Affected:
2.8 , ≤ 3.6
(custom)
cpe:2.3:a:opensearch:opensearch:*:*:*:*:*:*:*:* |
|
| Amazon | Amazon OpenSearch Service |
Affected:
2.9 , ≤ 3.5
(custom)
cpe:2.3:a:amazon:amazon_opensearch_service:*:*:*:*:*:*:*:* |
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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.