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.
5551 vulnerabilities reference this CWE, most recent first.
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.
This issue affects Cosminexus Component Container: from 11-70-01 before 11-70-03, from 11-60 before 11-60-03, from 11-50 through 11-50-03, from 11-40 through 11-40-03, from 11-30 through 11-30-08, from 11-20 before 11-20-10, from 11-10 through 11-10-11, from 11-00 before 11-00-13, from 09-87 before 09-87-10, from 09-80 before 09-80-05, from 09-70 before 09-70-28, from 09-50 through 09-50-22, and from 09-00 through 09-00-18.
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: 2026-09-24 14:18
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: 2026-10-08 18:11
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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CVE-2026-69836 (GCVE-0-2026-69836)
Vulnerability from cvelistv5 – Published: 2026-08-20 21:43 – Updated: 2026-10-08 18:09 Exclusively Hosted Service
VLAI
EPSS
VEX
Title
Microsoft Entra ID Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 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 Entra |
Affected:
-
cpe:2.3:a:microsoft:microsoft_entra_id:*:*:*:*:*:*:*:* |
Date Public
2026-08-20 14:00
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CVE-2026-69694 (GCVE-0-2026-69694)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:11 – Updated: 2026-10-08 18:13
VLAI
EPSS
VEX
Title
Windows IP Address Management (IPAM) Service Elevation of Privilege Vulnerability
Summary
Deserialization of untrusted data in Windows IP Address Management (IPAM) Service allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:15 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
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7725
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7725
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9445
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9445
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2954
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5622
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-69659 (GCVE-0-2026-69659)
Vulnerability from cvelistv5 – Published: 2026-08-09 18:01 – Updated: 2026-08-10 17:24
VLAI
EPSS
VEX
Title
Memory exhaustion via unbounded deserialization of keyset pagination cursors in Ash.Page.Keyset
Summary
Uncontrolled Resource Consumption vulnerability in ash-project ash allows an attacker to exhaust the memory of the node via a crafted keyset pagination cursor.
Read actions with keyset pagination deserialize the client-supplied page[:after] or page[:before] cursor in decode_values/2 in lib/ash/page/keyset.ex, which base64-decodes the value and passes it to :erlang.binary_to_term/2 without bounding its size. The Erlang external term format supports zlib-compressed payloads, which the decoder inflates transparently, so a cursor of a few kilobytes can allocate tens of megabytes of heap in a single call. Ash itself only ever encodes cursors uncompressed, so the decoder accepts a term shape its encoder never produces. Concurrent requests aggregate these allocations and can terminate the node.
This issue affects ash: from 1.17.0 before 3.31.1.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 17:23 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/ash-project/ash/security/advis… | relatedvendor-advisory |
| https://cna.erlef.org/cves/CVE-2026-69659.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-69659 | related |
| https://github.com/ash-project/ash/commit/1816b10… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| ash-project | ash |
Affected:
1.17.0 , < 3.31.1
(semver)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
|
| ash-project | ash |
Affected:
f8fadc67e67c955bb68b3a8d642be13e2b7e8ca9 , < 1816b103af975221210478d61db20adcea700319
(git)
cpe:2.3:a:ash-project:ash:*:*:*:*:*:*:*:* |
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CVE-2026-69098 (GCVE-0-2026-69098)
Vulnerability from cvelistv5 – Published: 2026-08-04 15:15 – Updated: 2026-08-05 14:54 X_Open Source
VLAI
EPSS
VEX
Title
kotaemon 0.12.0 Unauthenticated Remote Code Execution via Insecure Deserialization
Summary
kotaemon through 0.12.0 contains an insecure deserialization vulnerability in the check_connection endpoint that allows unauthenticated attackers to instantiate arbitrary Python classes by supplying crafted YAML/JSON input with a __type__ field. Attackers can exploit this to override the __type__ field with subprocess.check_output and arbitrary arguments, achieving remote code execution with application process privileges.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:54 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cinnamon/kotaemon/issues/844 | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/kotaemon-una… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cinnamon | kotaemon |
Affected:
0 , ≤ 0.12.0
(semver)
cpe:2.3:a:cinnamon:kotaemon:0.0.0:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.1.0:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.2.0:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.3.0:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.3.1:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.3.2:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.3.3:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.3.4:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.3.5:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.3.6:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.0:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.1:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.2:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.3:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.4:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.5:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.6:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.7:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.8:*:*:*:*:*:*:* cpe:2.3:a:cinnamon:kotaemon:0.4.9:*:*:*:*:*:*:* |
Date Public
2026-06-29 00:00
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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.