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.
2664 vulnerabilities reference this CWE, most recent first.
CVE-2026-111421 (GCVE-0-2026-111421)
Vulnerability from cvelistv5 – Published: 2026-11-09 09:15 – Updated: 2026-11-09 15:10
VLAI
EPSS
VEX
Title
Apache Airflow: Execution API: set_xcom skips the reserved-key check, so task-written XComs instantiate airflow.* classes on the API server
Summary
Apache Airflow's Task Execution API stored XCom values written by a task without the reserved-key check applied elsewhere, so a Dag author's task could write an XCom that, when a user later viewed it through the API with deserialization enabled, made the API server instantiate classes from the `airflow.*` namespace with arguments the Dag author chose. This is an incomplete fix for CVE-2026-59242: users who applied that fix in apache-airflow 3.3.1 remain affected through this route and should upgrade to apache-airflow 3.4.0 or later.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 15:09 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
apache
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/apache/airflow/pull/72718 | patch |
| https://github.com/apache/airflow/pull/74829 | patch |
| https://www.cve.org/CVERecord?id=CVE-2026-59242 | related |
| https://lists.apache.org/thread.html/pwdwx354tv0x… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Airflow |
Affected:
3.0.0 , < 3.4.0
(semver)
|
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CVE-2026-111408 (GCVE-0-2026-111408)
Vulnerability from cvelistv5 – Published: 2026-10-19 09:09 – Updated: 2026-10-19 17:17 X_Open Source
VLAI
EPSS
VEX
Title
WordPress Quiz And Survey Master plugin <= 11.2.7 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows Object Injection.This issue affects Quiz And Survey Master: from n/a through 11.2.7.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 17:17 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ExpressTech | Quiz And Survey Master |
Affected:
0 , ≤ 11.2.7
(custom)
|
Date Public
2026-10-17 08:21
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CVE-2026-111395 (GCVE-0-2026-111395)
Vulnerability from cvelistv5 – Published: 2026-11-09 09:18 – Updated: 2026-11-09 10:09
VLAI
EPSS
VEX
Title
Apache Airflow: Reserved serialization keys in Dag run conf crash the scheduler or are rebuilt as objects in the Triggerer via deadline callbacks
Summary
Apache Airflow did not reject reserved serialization keys inside a Dag run's `conf`. A user allowed to trigger a Dag that uses a deadline alert with an asynchronous callback could pass a `conf` that, once the deadline was missed, either crashed the scheduler repeatedly or was rebuilt into objects inside the Triggerer. Users are advised to upgrade to apache-airflow 3.4.0 or later.
Severity
No CVSS data available.
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
apache
CNA
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Airflow |
Affected:
3.2.0 , < 3.4.0
(semver)
|
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CVE-2026-111160 (GCVE-0-2026-111160)
Vulnerability from cvelistv5 – Published: 2026-10-15 18:57 – Updated: 2026-10-21 01:24
VLAI
EPSS
VEX
Title
LightLLM through 1.2.0 Unauthenticated DoS via pd_kv_trans_params Deserialization
Summary
LightLLM through 1.2.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the inference worker by supplying the internal pd_kv_trans_params field to the /generate endpoint. Attackers can send a single request whose parameters cause pickle.loads to fail in InferSamplingParams, killing the inference thread while /health stays up and all later requests hang until restart.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-21 01:24 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
6 references
| URL | Tags |
|---|---|
| https://github.com/ModelTC/LightLLM/issues/1629 | issue-trackingexploit |
| https://github.com/ModelTC/lightllm/blob/v1.2.0/l… | technical-description |
| https://github.com/ModelTC/lightllm/blob/v1.2.0/l… | technical-description |
| https://github.com/ModelTC/lightllm/blob/v1.2.0/l… | technical-description |
| https://github.com/ModelTC/LightLLM | product |
| https://www.vulncheck.com/advisories/lightllm-thr… | third-party-advisory |
Date Public
2026-10-15 00:00
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CVE-2026-110886 (GCVE-0-2026-110886)
Vulnerability from cvelistv5 – Published: 2026-10-18 11:00 – Updated: 2026-10-19 15:53 X_Open Source
VLAI
EPSS
VEX
Title
WordPress Conversational Forms for ChatBot plugin <= 1.5.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in QuantumCloud Conversational Forms for ChatBot conversational-forms allows Object Injection.This issue affects Conversational Forms for ChatBot: from n/a through 1.5.1.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 15:52 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| QuantumCloud | Conversational Forms for ChatBot |
Affected:
0 , ≤ 1.5.1
(custom)
|
Date Public
2026-10-16 10:41
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CVE-2026-110879 (GCVE-0-2026-110879)
Vulnerability from cvelistv5 – Published: 2026-10-28 00:07 – Updated: 2026-11-06 18:39 X_Open Source
VLAI
EPSS
VEX
Title
jackson-databind: PolymorphicTypeValidator bypass via generic type arguments and array element types allows arbitrary class instantiation (incomplete fix for CVE-2026-54512)
Summary
jackson-databind validates the outer class of a class-name type ID but accepts attacker-selected classes inside its generic arguments, even when those classes violate the declared type or would be rejected as direct type IDs. This bypasses the generic-argument validation added for CVE-2026-54512 (GHSA-j3rv-43j4-c7qm), of which this is an incomplete fix.
DatabindContext._resolveAndValidateGeneric() checks the outer class against the declared base type and then passes each argument from the type ID to _validateTypeParameter(), which validates the argument against the outer base type rather than enforcing its corresponding declared generic binding. It also invokes validators with arguments that have not passed the subtype check those validators expect. Under the default DefaultBaseTypeLimitingValidator this accepts an unrelated class inside a generic subtype even when the same class is rejected as a direct type ID. Where an allowIfBaseType(...) rule approves the outer type, Jackson substitutes LaissezFaireSubTypeValidator, so the configured validator no longer restricts the embedded arguments. The element type of a plain array type ID such as [Lpkg.Gadget; is likewise left unvalidated once the array's base type is approved.
Affected paths include annotation-based class-name polymorphism with a default Jackson 3.x JsonMapper, configured default typing in both Jackson 2.x and 3.x, and integrations that expose that default typing. The default-validator case requires no application-authored validator: with @JsonTypeInfo(use = Id.CLASS), a direct gadget type ID is rejected as "Not a subtype", while a type ID naming a generic wrapper around the same gadget is accepted and deserialized, including attacker-supplied bean properties. Where class-name default typing permits Map, a property declared as Map<String,String> accepts HashMap<FileSystemXmlApplicationContext,String>; map-key discovery then passes the attacker-controlled JSON property name to the selected class's one-string constructor. With Spring on the classpath and attacker-controlled XML the application can load, that constructor loads the XML and invokes ProcessBuilder.start() under the application account, giving arbitrary command execution.
This issue affects com.fasterxml.jackson.core:jackson-databind from 2.10.0 and tools.jackson.core:jackson-databind from 3.0.0. Releases before 2.10.0 are not affected, because PolymorphicTypeValidator was introduced in jackson-databind 2.10.0.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-06 18:13 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
HeroDevs
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FasterXML/jackson-databind/sec… | vendor-advisory |
| https://github.com/FasterXML/jackson-databind/sec… | related |
| https://www.cve.org/CVERecord?id=CVE-2026-54512 | related |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| FasterXML | jackson-databind |
Affected:
2.10.0 , < 2.18.12
(maven)
Unaffected: 2.18.12 (maven) Affected: 2.19.0 , < 2.21.8 (maven) Unaffected: 2.21.8 (maven) Affected: 2.22.0 , < 2.22.4 (maven) Unaffected: 2.22.4 (maven) |
|
| FasterXML | jackson-databind |
Affected:
3.0.0 , < 3.1.8
(maven)
Unaffected: 3.1.8 (maven) Affected: 3.2.0 , < 3.2.4 (maven) Unaffected: 3.2.4 (maven) |
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CVE-2026-110874 (GCVE-0-2026-110874)
Vulnerability from cvelistv5 – Published: 2026-10-15 18:57 – Updated: 2026-10-15 19:47
VLAI
EPSS
VEX
Title
Dolibarr before 23.0.4 PHP Object Injection via jsonOrUnserialize()
Summary
Dolibarr before 23.0.4 contains a PHP object injection vulnerability in jsonOrUnserialize() in functions.lib.php, which calls unserialize() without class restrictions when json_decode() fails. Attackers able to write stored extrafields, export configurations or blocked log entries can plant serialized objects that trigger gadget chains for code execution or file manipulation.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 19:47 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/Dolibarr/dolibarr/pull/38530 | issue-trackingpatch |
| https://github.com/Dolibarr/dolibarr/commit/17658… | patch |
| https://github.com/Dolibarr/dolibarr | product |
| https://www.vulncheck.com/advisories/dolibarr-bef… | third-party-advisory |
Impacted products
Date Public
2026-06-02 00:00
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CVE-2026-110812 (GCVE-0-2026-110812)
Vulnerability from cvelistv5 – Published: 2026-10-15 16:34 – Updated: 2026-10-16 18:54
VLAI
EPSS
VEX
Title
Deserialization of untrusted data in the Gremlin graph-import path in Amazon Neptune
Summary
Deserialization of untrusted data in the Gremlin graph data import component in Amazon Neptune engine might allow an authenticated remote actor with standard database permissions to execute arbitrary code and access internal service credentials.
To remediate this issue, users not enrolled in auto-update should upgrade to Amazon Neptune engine version 1.5.0.0.(Backports to 1.4.8.1 and 1.4.7.1)
Severity
9.9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 18:53 UTC
Assigner
AMZN
CNA
References
4 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AWS | Amazon Neptune Engine |
Affected:
1.2.0.0 , < 1.5.0.0
(custom)
Unaffected: 1.4.7.1 (custom) Unaffected: 1.4.8.1 (custom) cpe:2.3:a:aws:amazon_neptune_engine:*:*:*:*:*:*:*:* |
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CVE-2026-110761 (GCVE-0-2026-110761)
Vulnerability from cvelistv5 – Published: 2026-10-14 18:47 – Updated: 2026-10-14 19:39
VLAI
EPSS
VEX
Title
ILIAS before 9.24, 10.12, and 11.5 PHP Object Injection via Test Results Import
Summary
ILIAS before 9.24, 10.12, and 11.5 contains a PHP object injection vulnerability that allows authenticated users with Test creation or import permission to deserialize arbitrary objects via crafted Test archives. Attackers can inject a malicious tst_sequence sequence attribute that is passed to unserialize(), abusing Guzzle or Monolog gadget chains to write PHP files and execute code.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 19:39 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
9 references
| URL | Tags |
|---|---|
| https://docu.ilias.de/go/blog/15821/952 | vendor-advisory |
| https://docu.ilias.de/ilias.php?baseClass=illmpre… | release-notes |
| https://github.com/ILIAS-eLearning/ILIAS/commit/c… | patch |
| https://github.com/ILIAS-eLearning/ILIAS/commit/2… | patch |
| https://github.com/ILIAS-eLearning/ILIAS/commit/a… | patch |
| https://github.com/ILIAS-eLearning/ILIAS/blob/2a3… | technical-description |
| https://github.com/ILIAS-eLearning/ILIAS/blob/2a3… | technical-description |
| https://github.com/ILIAS-eLearning/ILIAS | product |
| https://www.vulncheck.com/advisories/ilias-before… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| ILIAS-eLearning e.V. | ILIAS |
Affected:
9.0 , < 9.24
(custom)
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Date Public
2026-10-06 00:00
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CVE-2026-110370 (GCVE-0-2026-110370)
Vulnerability from cvelistv5 – Published: 2026-10-21 09:10 – Updated: 2026-10-21 10:35 X_Open Source
VLAI
EPSS
VEX
Title
WordPress GS Pins for Pinterest plugin <= 1.9.2 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in GS Plugins GS Pins for Pinterest gs-pinterest-portfolio allows Object Injection.This issue affects GS Pins for Pinterest: from n/a through 1.9.2.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-21 10:26 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Patchstack
CNA
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/plugin/… | vdb-entry |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GS Plugins | GS Pins for Pinterest |
Affected:
0 , ≤ 1.9.2
(custom)
|
Date Public
2026-10-19 08:09
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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.