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.
5328 vulnerabilities reference this CWE, most recent first.
CVE-2026-78257 (GCVE-0-2026-78257)
Vulnerability from cvelistv5 – Published: 2026-08-27 08:59 – Updated: 2026-08-27 12:36
VLAI
EPSS
VEX
Title
WordPress Booking and Rental Manager plugin <= 2.7.5 - PHP Object Injection vulnerability
Summary
Contributor PHP Object Injection in Booking and Rental Manager <= 2.7.5 versions.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 12:36 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 | |
|---|---|---|---|
| magepeopleteam | Booking and Rental Manager |
Affected:
n/a , ≤ 2.7.5
(custom)
|
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CVE-2026-78175 (GCVE-0-2026-78175)
Vulnerability from cvelistv5 – Published: 2026-09-12 07:39 – Updated: 2026-09-15 14:01
VLAI
EPSS
VEX
Title
Tutor LMS <= 4.0.7 - Authenticated (Subscriber+) PHP Object Injection to Remote Code Execution
Summary
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 4.0.7 via the `withdraw_method_field` parameter of the `tutor_save_withdraw_account` AJAX handler. This is due to the handler lacking any capability or role check, relying solely on a nonce, while also passing attacker-supplied values through `esc_sql()`, which replaces every `%` character with a 66-byte HMAC placeholder token before the data is serialized and stored via `update_user_meta()`; when the meta is later retrieved, the placeholder is collapsed back to a single `%`, leaving serialized string length declarations 65 bytes greater than the actual content, and because array keys originate from entirely unescaped POST field names, `unserialize()` over-reads into attacker-controlled bytes, allowing injection of an arbitrary serialized object stream. This makes it possible for authenticated attackers, with subscriber-level access and above, to achieve remote code execution on the server by triggering the `GuzzleHttp\Cookie\FileCookieJar` POP chain, reachable via the `spl_autoload_register` loader in `TUTOR\RestAPI` which loads the plugin's own bundled PayPal Composer autoloader, writing attacker-controlled content to an attacker-specified filename. This has an unauthenticated pathway when user registration is enabled, which is common for students and teachers to register, and it requires the monetization feature to be enabled.
Severity
8.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 13:26 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| themeum | Tutor LMS – eLearning and online course solution |
Affected:
0 , ≤ 4.0.7
(semver)
|
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CVE-2026-78147 (GCVE-0-2026-78147)
Vulnerability from cvelistv5 – Published: 2026-08-23 23:00 – Updated: 2026-08-27 14:37
VLAI
EPSS
VEX
Title
ggml-org llama.cpp ggml-RPC Server ggml-rpc.cpp deserialize_tensor deserialization
Summary
A vulnerability was found in ggml-org llama.cpp bec4772f6. The impacted element is the function deserialize_tensor of the file ggml/src/ggml-rpc/ggml-rpc.cpp of the component ggml-RPC Server. Performing a manipulation of the argument op/op_params results in deserialization. The attack may be initiated remotely. This vulnerability is distinct from CVE-2026-34159 (GHSA-j8rj-fmpv-wcxw, PR #20908), which only added a buffer==nullptr rejection in create_node() and does not validate op or op_params. The reported GitHub issue was closed automatically due to inactivity.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:21 UTC
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/394534 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/394534/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-78147 | third-party-advisory |
| https://vuldb.com/submit/882534 | third-party-advisory |
| https://github.com/ggml-org/llama.cpp/issues/25289 | issue-tracking |
| https://github.com/ggml-org/llama.cpp/ | product |
Impacted products
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CVE-2026-78032 (GCVE-0-2026-78032)
Vulnerability from cvelistv5 – Published: 2026-08-28 06:11 – Updated: 2026-08-28 16:10
VLAI
EPSS
VEX
Summary
SOY CMS contains an issue with deserialization of untrusted data. An arbitrary code may be executed by an attacker with the web server privilege.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:10 UTC
CWE
- CWE-502 - Deserialization of untrusted data
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Tsuyoshi Saito | SOY CMS |
Affected:
0 , ≤ 3.24.0
(semver)
|
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CVE-2026-78006 (GCVE-0-2026-78006)
Vulnerability from cvelistv5 – Published: 2026-09-12 07:39 – Updated: 2026-09-14 19:23
VLAI
EPSS
VEX
Title
The Events Calendar <= 6.17.4 - Unauthenticated PHP Object Injection to Remote Code Execution
Summary
The The Events Calendar plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 6.17.4 via the is_safe_widget_instance function. This is due to insufficient protection in is_safe_widget_instance, which can be bypassed because PHP fires magic methods during its pre-parse, combined with enable_rendering_widget_copied() forging a valid wp_hash integrity attribute before unserialize() is reached. This makes it possible for unauthenticated attackers to execute code on the server. This is exploitable without authentication or approval because the plugin's V2 single-event template runs do_blocks() over buffered comment HTML, and WordPress returns a moderation-hash URL that allows an unauthenticated commenter to immediately view their own pending comment, delivering the injected block markup to the vulnerable code path before any moderation occurs. This does require comments to be enabled and visible on events.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:08 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
7 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| stellarwp | The Events Calendar |
Affected:
0 , ≤ 6.17.4
(semver)
|
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CVE-2026-77646 (GCVE-0-2026-77646)
Vulnerability from cvelistv5 – Published: 2026-08-20 22:11 – Updated: 2026-08-21 20:08
VLAI
EPSS
VEX
Title
Server Side Request Forgery (SSRF) vulnerability reported in Windchill
Summary
A Server-Side Request Forgery (SSRF) vulnerability has been reported in PTC Windchill PDMLink and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:49 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ptc.com/en/support/article/CS474826 | vendor-advisorymitigationpermissions-required |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| PTC | Windchill PDMLink |
Affected:
11.0 M030
Affected: 11.1 M020 Affected: 11.2.1.0 Affected: 12.0.2.0 Affected: 12.1.2.0 Affected: 13.0.2.0 Affected: 13.1.0.0 Affected: 13.1.1.0 Affected: 13.1.2.0 Affected: 13.1.3.0 |
|
| PTC | FlexPLM |
Affected:
11.0 M030
Affected: 11.1 M020 Affected: 11.2.1.0 Affected: 12.0.0.0 Affected: 12.0.2.0 Affected: 12.0.3.0 Affected: 12.1.2.0 Affected: 12.1.3.0 Affected: 13.0.2.0 Affected: 13.0.3.0 |
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CVE-2026-77645 (GCVE-0-2026-77645)
Vulnerability from cvelistv5 – Published: 2026-08-20 22:08 – Updated: 2026-08-22 03:55
VLAI
EPSS
VEX
Title
Critical Remote Code Execution (RCE) vulnerability reported in Windchill
Summary
A critical remote code execution (RCE) vulnerability has been reported in PTC Windchill and PTC FlexPLM. The vulnerability may be exploited through the deserialization of untrusted data.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 00:00 UTC
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ptc.com/en/support/article/CS474826 | vendor-advisorymitigationpermissions-required |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| PTC | Windchill PDMLink |
Affected:
11.0 M030
Affected: 11.1 M020 Affected: 11.2.1.0 Affected: 12.0.2.0 Affected: 12.1.2.0 Affected: 13.0.2.0 Affected: 13.1.0.0 Affected: 13.1.1.0 Affected: 13.1.2.0 Affected: 13.1.3.0 |
|
| PTC | FlexPLM |
Affected:
11.0 M030
Affected: 11.1 M020 Affected: 11.2.1.0 Affected: 12.0.0.0 Affected: 12.0.2.0 Affected: 12.0.3.0 Affected: 12.1.2.0 Affected: 12.1.3.0 Affected: 13.0.2.0 Affected: 13.0.3.0 |
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CVE-2026-77484 (GCVE-0-2026-77484)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:18 – Updated: 2026-09-16 21:58
VLAI
EPSS
VEX
Title
Microsoft SQL Server Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in SQL Server 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 2026-09-09 04:24 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
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft SQL Server 2019 (CU 32) |
Affected:
15.0.0.0 , < 15.0.4490.9
(custom)
|
|
| Microsoft | Microsoft SQL Server 2019 (GDR) |
Affected:
15.0.0 , < 15.0.2190.7
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (CU 26) |
Affected:
16.0.0.0 , < 16.0.4275.2
(custom)
|
|
| Microsoft | Microsoft SQL Server 2022 (GDR) |
Affected:
16.0.0 , < 16.0.1200.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 (CU8) |
Affected:
17.0.0.0 , < 17.0.4085.5
(custom)
|
|
| Microsoft | Microsoft SQL Server 2025 for x64-based Systems (GDR) |
Affected:
17.0.1050.2 , < 17.0.1135.8
(custom)
|
Date Public
2026-09-08 14:00
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CVE-2026-77138 (GCVE-0-2026-77138)
Vulnerability from cvelistv5 – Published: 2026-08-25 09:00 – Updated: 2026-08-25 14:05
VLAI
EPSS
VEX
Title
Remote Code Execution in extension "HTML5 Video Player vs. Powermail" (html5videoplayer_powermail)
Summary
The extension fails to safely process untrusted client input of an attacker-controlled cookie directly to PHP's unserialize(). A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 14:04 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://typo3.org/security/advisory/typo3-ext-sa-… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| TYPO3 | Extension "HTML5 Video Player vs. Powermail" |
Affected:
0 , ≤ 0.2.1
(semver)
|
Date Public
2026-08-25 09:00
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CVE-2026-76967 (GCVE-0-2026-76967)
Vulnerability from cvelistv5 – Published: 2026-09-08 00:12 – Updated: 2026-09-09 04:25
VLAI
EPSS
VEX
Title
Insecure Deserialization in SAP NetWeaver Business Client
Summary
SAP NetWeaver Business Client does not perform sufficient validation when processing certain locally stored data during application startup. An attacker with low privileges on the local system could replace this data with specially crafted content. When the application is next launched, the crafted content is processed and could lead to arbitrary code execution in the context of the user. This results in a high impact on confidentiality, integrity and availability of the application.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 00:00 UTC
CWE
- CWE-502 - Deserialization of Untrusted Data
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP_SE | SAP NetWeaver Business Client |
Affected:
BC-WD-CLT-BUS 8.00
Affected: 8.10 |
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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.