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.
5115 vulnerabilities reference this CWE, most recent first.
CVE-2026-67579 (GCVE-0-2026-67579)
Vulnerability from cvelistv5 – Published: 2026-08-12 20:04 – Updated: 2026-08-13 12:44
VLAI
EPSS
VEX
Title
Filter expression injection via forged keyset pagination cursor in Ash
Summary
Deserialization of Untrusted Data vulnerability in ash-project ash allows an unauthenticated attacker to inject a filter expression through a forged keyset pagination cursor, resulting in SQL injection or code execution depending on the data layer.
Read actions with keyset pagination decode the client-supplied page[:after] or page[:before] cursor in decode_values/2 in lib/ash/page/keyset.ex using non_executable_binary_to_term/2 with [:safe]. That guard blocks new atoms, funs, and ports, but not a struct built from atoms already interned in a running Ash application, so a decoded %Ash.Query.Call{} expression survives and is spliced into the keyset filter as a comparison value in do_filters/4 and evaluated. Because the cursor bypasses the Ash.Expr macro, the runtime never applies the private?/public? gate that would otherwise reject it. On AshPostgres the injected fragment is inlined into the SQL query; on the ETS and Simple data layers it is evaluated in-process as an arbitrary function call.
This issue affects ash: from 1.17.0 before 3.31.3.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-13 12:43 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash/security/advis… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-67579.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-67579 | related |
| https://github.com/ash-project/ash/commit/91874dd… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash |
Affected:
1.17.0 , < 3.31.3
(semver)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
|
| ash-project | ash |
Affected:
f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9 , < 91874dd5435bc0ffebd8a254acfa573b39b74520
(git)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
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CVE-2026-67260 (GCVE-0-2026-67260)
Vulnerability from cvelistv5 – Published: 2026-08-12 15:33 – Updated: 2026-08-12 16:25
VLAI
EPSS
VEX
Title
Apache Airflow: DAG-author remote code execution on the Scheduler via awaiting_input next_kwargs deserialization
Summary
Apache Airflow 3.3.0 moved human-in-the-loop tasks from the triggerer to a new `awaiting_input` task state swept by the scheduler. That sweep deserializes the task instance's `next_kwargs` without an allow-list, so a Dag author — who controls that value through the task execution API — can cause an arbitrary module import and object instantiation inside the scheduler process, or terminate the scheduler job. No non-default configuration is required: the sweep runs unconditionally every 15 seconds, and the default `allowed_deserialization_classes` setting does not cover this code path. Versions before 3.3.0 are not affected, because human-in-the-loop tasks deferred onto the triggerer instead. This is a different code path from CVE-2026-58076, which covers the same unguarded exception-node deserialization reached elsewhere — deployments that applied that fix must upgrade for this issue as well. Users are advised to upgrade to apache-airflow 3.3.1 or later.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 16:00 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/apache/airflow/pull/70685 | patch |
| https://www.cve.org/CVERecord?id=CVE-2026-58076 | related |
| https://lists.apache.org/thread/vygr0fh82cjzjp5k4… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Airflow |
Affected:
3.3.0 , < 3.3.1
(semver)
|
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CVE-2026-66909 (GCVE-0-2026-66909)
Vulnerability from cvelistv5 – Published: 2026-08-06 10:23 – Updated: 2026-08-07 00:01
VLAI
EPSS
VEX
Title
Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage
Summary
Apache CXF's JMS transport deserializes the body of any inbound JMS ObjectMessage using native Java deserialization, with no type restrictions in place. Any attacker able to place a message on the service's JMS destination can submit a malicious serialized object, leading to denial of service or, if a suitable gadget class is on the classpath, remote code execution. The fix disables ObjectMessage deserialization by default, with a configuration switch to re-enable it if needed. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 15:09 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/lr5d4tg6tf7j29jmw… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache CXF |
Affected:
4.2.0 , < 4.2.3
(semver)
Affected: 4.0.0 , < 4.1.8 (semver) Affected: 0 , < 3.6.12 (semver) |
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CVE-2026-66808 (GCVE-0-2026-66808)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-08-28 17:45
VLAI
EPSS
VEX
Title
Microsoft SharePoint Server Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized 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 2026-08-07 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
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |
Affected:
16.0.0 , < 16.0.5565.1001
(custom)
|
|
| Microsoft | Microsoft SharePoint Server 2019 |
Affected:
16.0.0 , < 16.0.10417.20198
(custom)
|
|
| Microsoft | Microsoft SharePoint Server Subscription Edition |
Affected:
16.0.0 , < 16.0.19725.20522
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-66805 (GCVE-0-2026-66805)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-08-28 17:45
VLAI
EPSS
VEX
Title
Microsoft SharePoint Server Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized 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 2026-08-07 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
3 products
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|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 |
Affected:
16.0.0 , < 16.0.5565.1001
(custom)
|
|
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Affected:
16.0.0 , < 16.0.10417.20198
(custom)
|
|
| Microsoft | Microsoft SharePoint Server Subscription Edition |
Affected:
16.0.0 , < 16.0.19725.20522
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-66713 (GCVE-0-2026-66713)
Vulnerability from cvelistv5 – Published: 2026-07-28 13:44 – Updated: 2026-07-29 03:55
VLAI
EPSS
VEX
Title
Apache Axis2/Java: deserialization of untrusted Data
Summary
Deserialization of Untrusted Data (CWE-502) in the Tribes-based clustering component
in Apache Software Foundation Apache Axis2/Java through 2.0.0 on Apache Tomcat
(only when Tribes clustering is enabled, which is off by default) allows an
unauthenticated remote attacker with network access to the clustering port to
execute arbitrary code via a crafted serialized Java object delivered to the cluster
channel and deserialized in
org.apache.axis2.clustering.tribes.Axis2ChannelListener#messageReceived. Users are
recommended to upgrade to version 2.0.1, which fixes this issue by removing the
clustering feature entirely.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 00:00 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
3 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Axis2/Java |
Affected:
0 , ≤ 2.0.0
(semver)
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CVE-2026-66672 (GCVE-0-2026-66672)
Vulnerability from cvelistv5 – Published: 2026-08-20 12:07 – Updated: 2026-08-20 14:34
VLAI
EPSS
VEX
Title
WordPress Flatastic theme <= 2.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Flatastic <= 2.0 versions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 14:34 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/f… | vdb-entry |
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CVE-2026-66650 (GCVE-0-2026-66650)
Vulnerability from cvelistv5 – Published: 2026-08-24 11:54 – Updated: 2026-08-24 12:51
VLAI
EPSS
VEX
Title
WordPress FreightCo theme <= 1.1.15 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in FreightCo <= 1.1.15 versions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 12:27 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://patchstack.com/database/wordpress/theme/f… | vdb-entry |
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CVE-2026-66620 (GCVE-0-2026-66620)
Vulnerability from cvelistv5 – Published: 2026-08-18 13:59 – Updated: 2026-08-18 19:48
VLAI
EPSS
VEX
Title
WordPress OptionTree plugin <= 2.7.3 - PHP Object Injection vulnerability
Summary
Editor PHP Object Injection in OptionTree <= 2.7.3 versions.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 19:32 UTC
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 | |
|---|---|---|---|
| Derek Herman | OptionTree |
Affected:
n/a , ≤ 2.7.3
(custom)
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CVE-2026-66583 (GCVE-0-2026-66583)
Vulnerability from cvelistv5 – Published: 2026-08-20 12:06 – Updated: 2026-08-20 15:19
VLAI
EPSS
VEX
Title
WordPress Forminator plugin <= 1.57.0 - PHP Object Injection vulnerability
Summary
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-20 14:58 UTC
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 | |
|---|---|---|---|
| WPMU DEV | Forminator |
Affected:
n/a , ≤ 1.57.0
(custom)
|
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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.