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CWE-502
Deserialization of Untrusted Data
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
CVE-2026-5426 (GCVE-0-2026-5426)
Vulnerability from cvelistv5 – Published: 2026-04-16 15:18 – Updated: 2026-05-27 14:53
VLAI
Title
KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value
Summary
Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/mandiant/Vulnerability-Disclos… | third-party-advisory |
| https://www.digital-knowledge.co.jp/product/kd/ | product |
| https://cloud.google.com/blog/topics/threat-intel… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Digital Knowledge | KnowledgeDeliver |
Affected:
0 , < 20260224
(date)
|
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CVE-2026-54512 (GCVE-0-2026-54512)
Vulnerability from cvelistv5 – Published: 2026-06-23 20:56 – Updated: 2026-06-24 15:22
VLAI
Title
jackson-databind: PolymorphicTypeValidator bypass via generic type parameters allows arbitrary class instantiation
Summary
jackson-databind contains the general-purpose data-binding functionality and tree-model for Jackson Data Processor. From 2.10.0 until 2.18.8, 2.21.4, and 3.1.4, jackson-databind's PolymorphicTypeValidator (PTV) is the primary safety mechanism guarding polymorphic deserialization. When polymorphic typing is enabled and a type identifier contains generic parameters (i.e. the type ID string contains <), DatabindContext._resolveAndValidateGeneric() validates only the raw container class name (the substring before <) against the configured PTV. If the container type is approved, the method parses the full canonical type string via TypeFactory.constructFromCanonical() and returns the fully parameterized type without ever validating the nested type arguments against the PTV. The nested type arguments are then resolved, instantiated, and populated as beans during deserialization. An attacker who controls the type ID can therefore place a denied class as a generic type parameter of an allowed container — for example java.util.ArrayList<com.evil.Gadget> when only java.util.ArrayList is allow-listed. The container passes the PTV check; com.evil.Gadget is loaded via Class.forName(name, true, loader), instantiated, and its properties are set from attacker-controlled JSON. This completely bypasses an explicitly configured PTV allow-list. This vulnerability is fixed in 2.18.8, 2.21.4, and 3.1.4.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FasterXML/jackson-databind/sec… | x_refsource_CONFIRM |
| https://github.com/FasterXML/jackson-databind/iss… | x_refsource_MISC |
| https://github.com/FasterXML/jackson-databind/com… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FasterXML | jackson-databind |
Affected:
>= 2.10.0, < 2.18.8
Affected: >= 2.19.0, < 2.21.4 Affected: >= 3.0.0, < 3.1.4 |
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CVE-2026-5473 (GCVE-0-2026-5473)
Vulnerability from cvelistv5 – Published: 2026-04-03 16:30 – Updated: 2026-04-06 14:51
VLAI
Title
NASA cFS Pickle pickle.load deserialization
Summary
A vulnerability has been found in NASA cFS up to 7.0.0. The impacted element is the function pickle.load of the component Pickle Module. Such manipulation leads to deserialization. The attack needs to be performed locally. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/355077 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/355077/cti | signaturepermissions-required |
| https://vuldb.com/submit/781949 | third-party-advisory |
| https://github.com/nasa/cFS/issues/951 | issue-tracking |
| https://github.com/nasa/cFS/ | product |
Impacted products
Credits
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CVE-2026-54806 (GCVE-0-2026-54806)
Vulnerability from cvelistv5 – Published: 2026-06-17 09:51 – Updated: 2026-06-17 15:29
VLAI
Title
WordPress WP Activity Log plugin <= 5.6.3.1 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in WP Activity Log <= 5.6.3.1 versions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Melapress | WP Activity Log |
Affected:
n/a , ≤ 5.6.3.1
(custom)
|
Credits
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CVE-2026-5507 (GCVE-0-2026-5507)
Vulnerability from cvelistv5 – Published: 2026-04-09 22:18 – Updated: 2026-04-14 14:38
VLAI
Title
Session Cache Restore — Arbitrary Free via Deserialized Pointer
Summary
When restoring a session from cache, a pointer from the serialized session data is used in a free operation without validation. An attacker who can poison the session cache could trigger an arbitrary free. Exploitation requires the ability to inject a crafted session into the cache and for the application to call specific session restore APIs.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
Credits
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CVE-2026-55153 (GCVE-0-2026-55153)
Vulnerability from cvelistv5 – Published: 2026-07-01 20:02 – Updated: 2026-07-06 14:02
VLAI
Title
mchange-commons-java contains elements susceptible to abuse via JNDI injection and "deserialization gadgets"
Summary
mchange-commons-java is a Java library of shared utility classes used by mchange projects like the c3p0 connection pool. Prior to version 0.6.0, its JNDI ObjectFactory implementation (com.mchange.v2.naming.JavaBeanObjectFactory) will construct objects of arbitrary classes and initialize "JavaBean"-style properties, which for certain classes enables JNDI injection and "deserialization gadgets." Such initialization is unsafe for some classes: for example, setting the contentType property of a Swing JEditorPane to text/html and its text property to HTML containing a stylesheet <link> will provoke an HTTP GET on an arbitrary URL, potentially from within a trusted security domain. The problem is aggravated by the library's ReferenceIndirector, through which malicious JNDI Reference objects can be smuggled in for dereferencing wherever an application reads a Java-serialized object. This has been resolved in version 0.6.0.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/swaldman/mchange-commons-java/… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| swaldman | mchange-commons-java |
Affected:
< 0.6.0
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CVE-2026-55223 (GCVE-0-2026-55223)
Vulnerability from cvelistv5 – Published: 2026-06-30 22:56 – Updated: 2026-07-01 13:38
VLAI
Title
c3p0 exposes a deserialization "sink" via JDBC DataSource bean properties
Summary
c3p0 is a JDBC Connection pooling library. In versions prior to 0.14.0, c3p0 in combination with other libraries, can compose to a "sink" for deserialization gadgets. The JDBC spec's DataSource.getConnection() and ConnectionPoolDataSource.getPooledConnection() match the getXXX() form, so JavaBean libraries treat them as "properties" assumed safe while they actually call into JDBC drivers. Attackers can thus craft malicious DataSource objects whose property lookups invoke vulnerable drivers, then smuggle them in serialized form to where an application deserializes and auto-resolves bean properties — triggering the attack. This requires a susceptible DataSource/ConnectionPoolDataSource and JDBC driver on the CLASSPATH, plus a carrier that auto-looks-up JavaBean properties on = deserialization, most commonly a collection paired with an Apache commons-beanutils Comparator that sorts by bean properties. c3p0 supplied that susceptible DataSource/ConnectionPoolDataSource, which was an essential component of the trigger. This issue has been fixed in version 0.14.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/swaldman/c3p0/security/advisor… | x_refsource_CONFIRM |
| https://github.com/swaldman/c3p0/commit/7b022c4b6… | x_refsource_MISC |
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CVE-2026-5536 (GCVE-0-2026-5536)
Vulnerability from cvelistv5 – Published: 2026-04-05 02:45 – Updated: 2026-04-06 14:51
VLAI
Title
FedML-AI FedML gRPC server grpc_server.py sendMessage deserialization
Summary
A weakness has been identified in FedML-AI FedML up to 0.8.9. Affected is the function sendMessage of the file grpc_server.py of the component gRPC server. Executing a manipulation can lead to deserialization. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/355289 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/355289/cti | signaturepermissions-required |
| https://vuldb.com/submit/782201 | third-party-advisory |
| https://github.com/AnalogyC0de/public_exp/issues/26 | issue-tracking |
Impacted products
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CVE-2026-56031 (GCVE-0-2026-56031)
Vulnerability from cvelistv5 – Published: 2026-06-26 14:52 – Updated: 2026-06-26 17:43
VLAI
Title
WordPress Uncanny Automator plugin <= 7.3.1.2 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Uncanny Automator <= 7.3.1.2 versions.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Uncanny Owl | Uncanny Automator |
Affected:
n/a , ≤ 7.3.1.2
(custom)
|
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CVE-2026-56032 (GCVE-0-2026-56032)
Vulnerability from cvelistv5 – Published: 2026-06-26 14:52 – Updated: 2026-06-26 15:34
VLAI
Title
WordPress Buddyboss Platform plugin <= 3.0.4 - PHP Object Injection vulnerability
Summary
Subscriber PHP Object Injection in Buddyboss Platform <= 3.0.4 versions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| BuddyBoss | Buddyboss Platform |
Affected:
n/a , ≤ 3.0.4
(custom)
|
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Mitigation
Phases: Architecture and Design, Implementation
Description:
- 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
Phase: Implementation
Description:
- 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
Phase: Implementation
Description:
- Explicitly define a final object() to prevent deserialization.
Mitigation
Phases: Architecture and Design, Implementation
Description:
- 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
Phase: Implementation
Description:
- 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
Phases: Architecture and Design, Implementation
Description:
- 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 ID: MIT-29
Phase: Operation
Strategy: Firewall
Description:
- 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.