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-2026-102377 (GCVE-0-2026-102377)
Vulnerability from cvelistv5 – Published: 2026-09-30 17:39 – Updated: 2026-09-30 17:59
VLAI
EPSS
VEX
Title
WordPress Photo Gallery by 10Web plugin <= 1.8.46 - PHP Object Injection vulnerability
Summary
Contributor PHP Object Injection in Photo Gallery by 10Web <= 1.8.46 versions.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 17:57 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 | |
|---|---|---|---|
| 10Web | Photo Gallery by 10Web |
Affected:
n/a , ≤ 1.8.46
(custom)
|
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CVE-2026-102135 (GCVE-0-2026-102135)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:12 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Email Protection Gateway Deserialization of Untrusted Data
Summary
On a Kiteworks Email Protection Gateway cluster with database replication enabled, a party trusted by the cluster could submit a crafted serialized object that was deserialized without sufficient validation, potentially allowing code execution as the gateway service account. Replication is disabled by default, and exploitation requires control of a trusted cluster peer or administrative access to the appliance.
Severity
6.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:24 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
cisa-cg
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | vendor-advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kiteworks | Email Protection Gateway |
Affected:
0 , < 9.5.1
(custom)
Unaffected: 9.5.1 |
Date Public
2026-09-30 00:00
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CVE-2026-102108 (GCVE-0-2026-102108)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:24 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Email Protection Gateway deserialization of untrusted data
Summary
An authenticated administrator of Kiteworks Email Protection Gateway could submit a crafted serialized object to a cluster management interface that was deserialized without sufficient validation, potentially allowing arbitrary code execution in the context of the gateway service account. Exploitation requires an administrator account holding a specific queue-management privilege.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:15 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
cisa-cg
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | vendor-advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Kiteworks | Email Protection Gateway |
Affected:
0 , < 9.5.0
(custom)
Unaffected: 9.5.0 |
Date Public
2026-09-30 00:00
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CVE-2026-102101 (GCVE-0-2026-102101)
Vulnerability from cvelistv5 – Published: 2026-09-30 20:11 – Updated: 2026-10-01 13:37
VLAI
EPSS
VEX
Title
Kiteworks Core deserialization of untrusted data
Summary
Kiteworks Core before version 9.5.0 is vulnerable to Deserialization of Untrusted Data. A deserialization weakness in Kiteworks Core could, under certain conditions, allow crafted data to be deserialized unsafely, potentially resulting in remote code execution on the appliance. Exploitation depends on an attacker first being able to influence the affected data, so this issue is not exploitable on its own.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:26 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
cisa-cg
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/kiteworks/security-advisories/… | vendor-advisory |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
Impacted products
Date Public
2026-09-30 00:00
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CVE-2026-101169 (GCVE-0-2026-101169)
Vulnerability from cvelistv5 – Published: 2026-09-29 07:49 – Updated: 2026-09-29 16:46
VLAI
EPSS
VEX
Summary
In affected versions of Octopus Server, an authenticated user with permissions to edit an Environment or Project can set specifically crafted JSON content for the object. Insecure deserialization of this content allows the user to execute arbitrary code in the Octopus Server process.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 16:46 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
Octopus
CNA
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Octopus Deploy | Octopus Server |
Affected:
2019.4.1 , < 2026.1.11781
(custom)
Affected: 2026.2.0 , < 2026.2.13441 (custom) Affected: 2026.3.0 , < 2026.3.15829 (custom) |
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CVE-2026-100846 (GCVE-0-2026-100846)
Vulnerability from cvelistv5 – Published: 2026-09-27 01:28 – Updated: 2026-10-08 15:22
VLAI
EPSS
VEX
Title
MONAI before 1.5.2 Remote Code Execution via Pickle Deserialization
Summary
MONAI before 1.5.2 contains a deserialization of untrusted data vulnerability in the algo_from_pickle function in monai/auto3dseg/utils.py. The function reads a .pkl file and passes its contents to pickle.loads without validating the data source or content. If an application invokes algo_from_pickle on an attacker-supplied pickle file, an object defining __reduce__ is executed during deserialization, resulting in arbitrary code execution in the context of the application.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 15:52 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Project-MONAI/MONAI/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/monai-before… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Project-MONAI | MONAI |
Affected:
0 , < 1.5.2
(semver)
Unaffected: 1.5.2 (semver) cpe:2.3:a:project-monai:monai:*:*:*:*:*:*:*:* |
Date Public
2026-04-03 00:00
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CVE-2026-100845 (GCVE-0-2026-100845)
Vulnerability from cvelistv5 – Published: 2026-09-27 01:28 – Updated: 2026-09-28 13:56
VLAI
EPSS
VEX
Title
MONAI before 1.6.0 Remote Code Execution via NumpyReader
Summary
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Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:56 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Project-MONAI/MONAI/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/monai-before… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Project-MONAI | MONAI |
Affected:
0 , < 1.6.0
(semver)
Unaffected: 1.6.0 (semver) cpe:2.3:a:project-monai:monai:*:*:*:*:*:*:*:* |
Date Public
2026-06-11 00:00
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CVE-2026-100843 (GCVE-0-2026-100843)
Vulnerability from cvelistv5 – Published: 2026-09-27 01:28 – Updated: 2026-09-30 15:17
VLAI
EPSS
VEX
Title
MONAI before 1.6.0 Remote Code Execution via algo_from_pickle
Summary
MONAI versions before 1.6.0 contain a remote code execution vulnerability in the algo_from_pickle() function due to unsafe pickle.loads() deserialization in monai/auto3dseg/utils.py. Attackers can craft malicious pickle files that execute arbitrary system commands when deserialized by the vulnerable function.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 15:17 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Project-MONAI/MONAI/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/monai-before… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Project-MONAI | MONAI |
Affected:
0 , < 1.6.0
(semver)
Unaffected: 1.6.0 (semver) cpe:2.3:a:project-monai:monai:*:*:*:*:*:*:*:* |
Date Public
2026-06-11 00:00
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CVE-2026-100841 (GCVE-0-2026-100841)
Vulnerability from cvelistv5 – Published: 2026-09-27 01:28 – Updated: 2026-09-28 13:56
VLAI
EPSS
VEX
Title
MONAI through 1.6.0 PersistentDataset Remote Code Execution via Pickle Cache
Summary
In MONAI 1.6.0, PersistentDataset (monai/data/dataset.py) explicitly rejects the combination track_meta=True with weights_only=True, forcing users who cache MetaTensors (the default tensor type in MONAI >= 1.0) to run torch.load(hashfile, weights_only=False). Related cache helpers in monai/data/utils.py also call pickle.loads on cached content and derive cache keys with hashlib.md5. As a result, a local user with write access to a shared or world-writable cache_dir (e.g. /tmp/monai_cache, HPC scratch, ~/.cache/monai) can place a malicious pickle file that is deserialized the next time another user's MONAI pipeline reads the cache, resulting in arbitrary code execution in that user's context. All released versions of the monai pip package are affected; no patched version is available as of the advisory.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-28 13:54 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
VulnCheck
CNA
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Project-MONAI/MONAI/security/a… | vendor-advisory |
| https://www.vulncheck.com/advisories/monai-1.6.0-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Project-MONAI | MONAI |
Affected:
0 , ≤ 1.6.0
(semver)
cpe:2.3:a:project-monai:monai:*:*:*:*:*:*:*:* |
Date Public
2026-08-21 00:00
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CVE-2026-100730 (GCVE-0-2026-100730)
Vulnerability from cvelistv5 – Published: 2026-10-09 13:44 – Updated: 2026-10-11 17:05
VLAI
EPSS
VEX
Title
Grid Protection Alliance openPDC and openHistorian Deserialization of Untrusted Data
Summary
A service console interface on openPDC and openHistorian deserializes a client-supplied data structure. On systems using Windows Authentication, an attacker must already be authenticated to reach this function; on systems without Windows Authentication, this is reachable by an unauthenticated network attacker. This allows an attacker to trigger deserialization of an arbitrary object graph, which could allow remote code execution under the privileges of the affected service account.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-11 16:50 UTC
CWE
Assigner
icscert
CNA
References
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Grid Protection Alliance | openPDC |
Affected:
0 , < 2.9.477
(custom)
Affected: 0 , < 2.9.482 (custom) Unaffected: 2.9.482 |
|
| Grid Protection Alliance | openPDC (Docker image) |
Affected:
0 , < 2.9.477
(custom)
Affected: 0 , < 2.9.482 (custom) |
|
| Grid Protection Alliance | openHistorian |
Affected:
0 , < 2.8.580
(custom)
Affected: 0 , < 2.8.585 (custom) Unaffected: 2.8.585 |
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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.