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.
5336 vulnerabilities reference this CWE, most recent first.
CVE-2026-71560 (GCVE-0-2026-71560)
Vulnerability from cvelistv5 – Published: 2026-08-07 08:53 – Updated: 2026-08-07 17:44
VLAI
EPSS
VEX
Title
Apache Fory: Out-of-bounds heap read in C++ struct deserializer tagged-int fast-path
Summary
Out-of-bounds Read vulnerability in Apache Fory C++ deserialization.
This issue affects Apache Fory C++ versions from 0.14.0 before 1.5.0 when deserializing structs containing tagged integer fields. A crafted input payload may trigger an out-of-bounds heap read in the tagged integer fast-path deserializer, potentially causing information disclosure or denial of service.
Users are recommended to upgrade to Apache Fory 1.5.0, which fixes this issue. Applications that do not use Apache Fory C++ or do not use tagged integer fields are not affected.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 17:44 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Fory |
Affected:
0.14.0 , < 1.5.0
(semver)
|
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CVE-2026-71559 (GCVE-0-2026-71559)
Vulnerability from cvelistv5 – Published: 2026-08-07 08:56 – Updated: 2026-08-07 17:51
VLAI
EPSS
VEX
Title
Apache Fory: Uncaught panic (remote DoS) in Go meta-string decoder from untrusted metadata
Summary
Deserialization of Untrusted Data vulnerability in the Go implementation of Apache Fory allows an attacker to cause a denial of service by supplying crafted data containing malformed type metadata, which triggers an uncaught panic.
This issue affects Apache Fory: from 0.16.0 before 1.5.0. Users of other language implementations are not affected.
Users are recommended to upgrade to version 1.5.0, which fixes the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 17:51 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Fory |
Affected:
0.16.0 , < 1.5.0
(semver)
|
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CVE-2026-71558 (GCVE-0-2026-71558)
Vulnerability from cvelistv5 – Published: 2026-08-07 08:54 – Updated: 2026-08-07 17:48
VLAI
EPSS
VEX
Title
Apache Fory: Heap type confusion in C++ polymorphic smart-pointer deserialization
Summary
Heap type confusion vulnerability in Apache Fory C++ deserialization.
This issue affects Apache Fory C++ versions from 0.14.0 before 1.5.0. A crafted input payload can bypass type compatibility checks during polymorphic smart-pointer deserialization, causing an object of an incompatible type to be treated as the declared base type. This may result in undefined behavior and potentially lead to denial of service or arbitrary code execution.
Users are recommended to upgrade to Apache Fory 1.5.0, which fixes this issue. Applications not using Apache Fory C++ polymorphic smart-pointer deserialization are not affected.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 17:48 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Fory |
Affected:
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(semver)
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CVE-2026-71513 (GCVE-0-2026-71513)
Vulnerability from cvelistv5 – Published: 2026-08-22 13:34 – Updated: 2026-08-27 16:24
VLAI
EPSS
VEX
Title
NLTK 3.10.0 through 3.10.2 Remote Code Execution via AllowlistUnpickler Dotted-Name Bypass
Summary
NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft untrusted transition-parser models that execute arbitrary commands when TransitionParser.parse loads the model through allowlisted_pickle_load.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 03:56 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nltk/nltk/commit/c3e37113742a1… | patch |
| https://github.com/nltk/nltk | product |
| https://github.com/nltk/nltk/blob/v3.10.2/nltk/pi… | technical-description |
| https://www.vulncheck.com/advisories/nltk-through… | third-party-advisory |
Impacted products
Date Public
2026-08-11 00:00
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CVE-2026-71374 (GCVE-0-2026-71374)
Vulnerability from cvelistv5 – Published: 2026-09-08 07:47 – Updated: 2026-09-08 12:26
VLAI
EPSS
VEX
Title
Deserialization of Untrusted Data Vulnerability in Cosminexus Component Container
Summary
Deserialization of untrusted data vulnerability in Cosminexus Component Container.
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Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 12:26 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.hitachi.com/products/it/software/secu… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Hitachi | Cosminexus Component Container |
Affected:
11-70-01 , < 11-70-03
(custom)
Affected: 11-60 , < 11-60-03 (custom) Affected: 11-50 , ≤ 11-50-03 (custom) Affected: 11-40 , ≤ 11-40-03 (custom) Affected: 11-30 , ≤ 11-30-08 (custom) Affected: 11-20 , < 11-20-10 (custom) Affected: 11-10 , ≤ 11-10-11 (custom) Affected: 11-00 , < 11-00-13 (custom) Affected: 09-87 , < 09-87-10 (custom) Affected: 09-80 , < 09-80-05 (custom) Affected: 09-70 , < 09-70-28 (custom) Affected: 09-50 , ≤ 09-50-22 (custom) Affected: 09-00 , ≤ 09-00-18 (custom) |
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CVE-2026-71294 (GCVE-0-2026-71294)
Vulnerability from cvelistv5 – Published: 2026-08-05 12:38 – Updated: 2026-08-10 11:47
VLAI
EPSS
VEX
Title
Cotonti CMS Comments Plugin PHP Object Injection via Unrestricted unserialize() in Create/Edit Actions
Summary
Cotonti CMS's Comments plugin deserializes user-supplied data without restricting the classes that may be instantiated. In plugins/comments/controllers/actions/CreateAction.php, a POST parameter obtained via (trim-only sanitization) is passed to with no restriction, reachable by any member with write access to comments (the default setting in plugins/comments/comments.setup.php).
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:35 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cotonti/Cotonti | third-party-advisory |
| https://github.com/Cotonti/Cotonti/blob/master/pl… | third-party-advisory |
Date Public
2026-08-05 12:38
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CVE-2026-71281 (GCVE-0-2026-71281)
Vulnerability from cvelistv5 – Published: 2026-08-05 12:26 – Updated: 2026-08-10 11:47
VLAI
EPSS
VEX
Title
peft Unsafe Deserialization via torch.load() Without weights_only in LoRA-GA and CorDA Modules
Summary
Hugging Face peft's LoRA-GA and CorDA initialization modules (src/peft/tuners/lora/corda.py lines ~102 and ~163, and src/peft/tuners/lora/loraga.py line ~101) call torch.load on config-specified cache/covariance files without weights_only=True, bypassing peft's own safe-loading wrapper used elsewhere in the codebase.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 15:51 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/huggingface/peft | third-party-advisory |
| https://github.com/huggingface/peft/blob/main/src… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| huggingface | peft |
Affected:
0 , ≤ 0.19.1
(semver)
|
Date Public
2026-08-05 12:26
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CVE-2026-70554 (GCVE-0-2026-70554)
Vulnerability from cvelistv5 – Published: 2026-08-04 20:11 – Updated: 2026-08-14 16:51
VLAI
EPSS
VEX
Title
MaxSite CMS Unauthenticated PHP Object Injection via maxsite_comuser Cookie
Summary
MaxSite CMS contains a PHP object injection vulnerability that allows unauthenticated attackers to execute arbitrary code by passing attacker-controlled serialized data in the maxsite_comuser cookie directly to unserialize() without validation or class allowlisting. Attackers can craft a malicious serialized PHP object payload delivered in a single HTTP request to trigger magic methods during object graph reconstruction, enabling property-oriented programming attacks or remote code execution via available gadget chains such as those targeting SoapClient or Imagick extensions.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 13:52 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/maxsite/cms | product |
| https://max-3000.com/page/maxsite-cms-109-6 | patch |
| https://www.vulncheck.com/advisories/maxsite-cms-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MaxSite | MaxSite CMS |
Affected:
0.78 , ≤ 109.5
(custom)
Unaffected: 109.6 (custom) cpe:2.3:a:max-3000:maxsite_cms:*:*:*:*:*:*:*:* |
Date Public
2026-08-04 00:00
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CVE-2026-70416 (GCVE-0-2026-70416)
Vulnerability from cvelistv5 – Published: 2026-09-16 15:19 – Updated: 2026-09-16 17:38
VLAI
EPSS
VEX
Summary
Dell ObjectScale, versions prior to 4.4.0.0, contains a Deserialization of Untrusted Data vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to Remote execution.
Severity
10 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-16 17:37 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/en-in/00050593… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | ObjectScale |
Affected:
0 , < 4.4.0.0 or later
(semver)
|
Date Public
2026-09-10 06:30
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CVE-2026-70321 (GCVE-0-2026-70321)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:05 – Updated: 2026-09-16 16:24
VLAI
EPSS
VEX
Title
Microsoft SharePoint 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
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Server Subscription Edition |
Affected:
16.0.0 , < 16.0.19725.20522
(custom)
cpe:2.3:a:microsoft:sharepoint_server:*:*:*:*:subscription:*:*:* |
Date Public
2026-08-11 14:00
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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.