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.
4798 vulnerabilities reference this CWE, most recent first.
CVE-2021-20318 (GCVE-0-2021-20318)
Vulnerability from cvelistv5 – Published: 2021-12-23 19:48 – Updated: 2024-08-03 17:37
VLAI
EPSS
VEX
Summary
The HornetQ component of Artemis in EAP 7 was not updated with the fix for CVE-2016-4978. A remote attacker could use this flaw to execute arbitrary code with the permissions of the application using a JMS ObjectMessage.
Severity
No CVSS data available.
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2010559 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Artemis in EAP 7 |
Affected:
7.3.9.GA, 7.4.0.GA
|
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CVE-2021-20190 (GCVE-0-2021-20190)
Vulnerability from cvelistv5 – Published: 2021-01-19 16:27 – Updated: 2025-08-27 20:36
VLAI
EPSS
VEX
Summary
A flaw was found in jackson-databind before 2.9.10.7. FasterXML mishandles the interaction between serialization gadgets and typing. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/FasterXML/jackson-databind/iss… | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=1916633 | x_refsource_MISC |
| https://lists.apache.org/thread.html/r380e9257bac… | mailing-listx_refsource_MLIST |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://www.oracle.com//security-alerts/cpujul2021.html | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2021021… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | jackson-databind |
Affected:
jackson-databind 2.9.10.7
|
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CVE-2021-4451 (GCVE-0-2021-4451)
Vulnerability from cvelistv5 – Published: 2024-10-16 06:43 – Updated: 2026-04-08 16:38
VLAI
EPSS
VEX
Title
NinjaFirewall <= 4.3.3 - Authenticated PHAR Deserialization
Summary
The NinjaFirewall plugin for WordPress is vulnerable to Authenticated PHAR Deserialization in versions up to, and including, 4.3.3. This allows authenticated attackers to perform phar deserialization on the server. This deserialization can allow other plugin or theme exploits if vulnerable software is present (WordPress, and NinjaFirewall).
Severity
6.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| nintechnet | NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall |
Affected:
0 , < 4.3.4
(semver)
|
|
| ninjatechnologiesnetwork | ninja_firewall |
Affected:
0 , < 4.3.4
(custom)
cpe:2.3:a:ninjatechnologiesnetwork:ninja_firewall:*:*:*:*:*:*:*:* |
Credits
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CVE-2021-4178 (GCVE-0-2021-4178)
Vulnerability from cvelistv5 – Published: 2022-08-24 15:02 – Updated: 2024-08-03 17:16
VLAI
EPSS
VEX
Summary
A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
Severity
No CVSS data available.
CWE
- CWE-502 - - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2034388 | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2021-4178 | x_refsource_MISC |
| https://github.com/advisories/GHSA-98g7-rxmf-rrxm | x_refsource_MISC |
| https://github.com/fabric8io/kubernetes-client/is… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | kubernetes-client |
Affected:
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CVE-2021-4118 (GCVE-0-2021-4118)
Vulnerability from cvelistv5 – Published: 2021-12-23 17:15 – Updated: 2024-08-03 17:16
VLAI
EPSS
VEX
Title
Deserialization of Untrusted Data in pytorchlightning/pytorch-lightning
Summary
pytorch-lightning is vulnerable to Deserialization of Untrusted Data
Severity
7.8 (High)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://huntr.dev/bounties/31832f0c-e5bb-4552-a12… | x_refsource_CONFIRM |
| https://github.com/pytorchlightning/pytorch-light… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| pytorchlightning | pytorchlightning/pytorch-lightning |
Affected:
unspecified , < 1.6
(custom)
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CVE-2021-4104 (GCVE-0-2021-4104)
Vulnerability from cvelistv5 – Published: 2021-12-14 00:00 – Updated: 2026-05-28 19:53
VLAI
EPSS
VEX
Title
Deserialization of untrusted data in JMSAppender in Apache Log4j 1.2
Summary
JMSAppender in Log4j 1.2 is vulnerable to deserialization of untrusted data when the attacker has write access to the Log4j configuration. The attacker can provide TopicBindingName and TopicConnectionFactoryBindingName configurations causing JMSAppender to perform JNDI requests that result in remote code execution in a similar fashion to CVE-2021-44228. Note this issue only affects Log4j 1.2 when specifically configured to use JMSAppender, which is not the default. Apache Log4j 1.2 reached end of life in August 2015. Users should upgrade to Log4j 2 as it addresses numerous other issues from the previous versions.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
14 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Log4j 1.x |
Affected:
Apache Log4j 1.2 1.2.x
|
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CVE-2021-3838 (GCVE-0-2021-3838)
Vulnerability from cvelistv5 – Published: 2024-11-15 10:51 – Updated: 2024-11-18 14:41
VLAI
EPSS
VEX
Title
PHAR Deserialization in dompdf/dompdf
Summary
DomPDF before version 2.0.0 is vulnerable to PHAR deserialization due to a lack of checking on the protocol before passing it into the file_get_contents() function. An attacker who can upload files of any type to the server can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP objects. This can lead to remote code execution, especially when DOMPdf is used with frameworks with documented POP chains like Laravel or vulnerable developer code.
Severity
9.8 (Critical)
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| dompdf | dompdf/dompdf |
Affected:
unspecified , < 2.0.0
(custom)
|
|
| dompdf | dompdf |
Affected:
0 , < 2.0.0
(custom)
cpe:2.3:a:dompdf:dompdf:*:beta3:*:*:*:*:*:* |
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CVE-2021-3040 (GCVE-0-2021-3040)
Vulnerability from cvelistv5 – Published: 2021-06-10 12:33 – Updated: 2024-09-16 18:23
VLAI
EPSS
VEX
Title
Bridgecrew Checkov: Unsafe deserialization of Terraform files allows code execution
Summary
An unsafe deserialization vulnerability in Bridgecrew Checkov by Prisma Cloud allows arbitrary code execution when processing a malicious terraform file. This issue impacts Checkov 2.0 versions earlier than Checkov 2.0.139. Checkov 1.0 versions are not impacted.
Severity
6.7 (Medium)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2021-3040 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Palo Alto Networks | Bridgecrew Checkov |
Unaffected:
1.0 all
Affected: 2.0 , < 2.0.139 (custom) |
Date Public
2021-06-09 00:00
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CVE-2021-3035 (GCVE-0-2021-3035)
Vulnerability from cvelistv5 – Published: 2021-04-20 03:15 – Updated: 2024-09-17 03:17
VLAI
EPSS
VEX
Title
Bridgecrew Checkov: Unsafe deserialization of Terraform files allows code execution
Summary
An unsafe deserialization vulnerability in Bridgecrew Checkov by Prisma Cloud allows arbitrary code execution when processing a malicious terraform file. This issue impacts Checkov 2.0 versions earlier than Checkov 2.0.26. Checkov 1.0 versions are not impacted.
Severity
6.7 (Medium)
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2021-3035 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Palo Alto Networks | Bridgecrew Checkov |
Unaffected:
1.0 all
Affected: 2.0 , < 2.0.26 (custom) |
Date Public
2021-04-14 00:00
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CVE-2021-1415 (GCVE-0-2021-1415)
Vulnerability from cvelistv5 – Published: 2021-04-08 04:06 – Updated: 2024-11-08 23:27
VLAI
EPSS
VEX
Title
Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote Code Execution Vulnerabilities
Summary
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Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
| https://www.zerodayinitiative.com/advisories/ZDI-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Small Business RV Series Router Firmware |
Affected:
n/a
|
Date Public
2021-04-07 00:00
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-502"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "20210407 Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Authenticated Remote Code Execution Vulnerabilities",
"refsource": "CISCO",
"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv34x-rce-8bfG2h6b"
},
{
"name": "https://www.zerodayinitiative.com/advisories/ZDI-21-560/",
"refsource": "MISC",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-21-560/"
}
]
},
"source": {
"advisory": "cisco-sa-sb-rv34x-rce-8bfG2h6b",
"defect": [
[
"CSCvw94030",
"CSCvw94062",
"CSCvw94083"
]
],
"discovery": "INTERNAL"
}
}
}
},
"cveMetadata": {
"assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
"assignerShortName": "cisco",
"cveId": "CVE-2021-1415",
"datePublished": "2021-04-08T04:06:33.327Z",
"dateReserved": "2020-11-13T00:00:00.000Z",
"dateUpdated": "2024-11-08T23:27:45.467Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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.