CWE-502

Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

CVE-2026-35537 (GCVE-0-2026-35537)

Vulnerability from cvelistv5 – Published: 2026-04-03 03:28 – Updated: 2026-04-11 14:12
VLAI
Summary
An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Roundcube Webmail Affected: 0 , < 1.5.14 (semver)
Affected: 1.6.0 , < 1.6.14 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-39324 (GCVE-0-2026-39324)

Vulnerability from cvelistv5 – Published: 2026-04-07 18:13 – Updated: 2026-04-08 18:44
VLAI
Title
Rack::Session::Cookie secrets: decrypt failure fallback enables secretless session forgery and Marshal deserialization
Summary
Rack::Session is a session management implementation for Rack. From 2.0.0 to before 2.1.2, Rack::Session::Cookie incorrectly handles decryption failures when configured with secrets:. If cookie decryption fails, the implementation falls back to a default decoder instead of rejecting the cookie. This allows an unauthenticated attacker to supply a crafted session cookie that is accepted as valid session data without knowledge of any configured secret. Because this mechanism is used to load session state, an attacker can manipulate session contents and potentially gain unauthorized access. This vulnerability is fixed in 2.1.2.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-287 - Improper Authentication
  • CWE-345 - Insufficient Verification of Data Authenticity
  • CWE-502 - Deserialization of Untrusted Data
  • CWE-565 - Reliance on Cookies without Validation and Integrity Checking
Assigner
References
Impacted products
Vendor Product Version
rack rack-session Affected: >= 2.0.0, < 2.1.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-39467 (GCVE-0-2026-39467)

Vulnerability from cvelistv5 – Published: 2026-04-21 09:35 – Updated: 2026-05-19 17:18 X_Open Source
VLAI
Title
WordPress Responsive Slider by MetaSlider plugin <= 3.106.0 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in MetaSlider Responsive Slider by MetaSlider allows Object Injection.This issue affects Responsive Slider by MetaSlider: from n/a through 3.106.0.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
MetaSlider Responsive Slider by MetaSlider Affected: n/a , ≤ 3.106.0 (custom)
Create a notification for this product.
Credits
daroo Marc-André Beaulieu (h3dg3h0g)
Show details on NVD website
To clipboard 

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CVE-2026-39550 (GCVE-0-2026-39550)

Vulnerability from cvelistv5 – Published: 2026-06-02 10:44 – Updated: 2026-06-02 12:10
VLAI
Title
WordPress Aperitif theme <= 1.6 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Elated-Themes Aperitif allows Object Injection. This issue affects Aperitif: from n/a through 1.6.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Elated-Themes Aperitif Affected: n/a , ≤ 1.6 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-39551 (GCVE-0-2026-39551)

Vulnerability from cvelistv5 – Published: 2026-06-02 10:46 – Updated: 2026-06-02 12:10
VLAI
Title
WordPress Töbel theme <= 1.8.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Elated-Themes Töbel allows Object Injection. This issue affects Töbel: from n/a through 1.8.1.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Elated-Themes Töbel Affected: n/a , ≤ 1.8.1 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-39555 (GCVE-0-2026-39555)

Vulnerability from cvelistv5 – Published: 2026-06-02 13:34 – Updated: 2026-06-02 15:20
VLAI
Title
WordPress Askka theme <= 1.3.1 - PHP Object Injection vulnerability
Summary
Deserialization of Untrusted Data vulnerability in Elated-Themes Askka allows Object Injection. This issue affects Askka: from n/a through 1.3.1.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Elated-Themes Askka Affected: n/a , ≤ 1.3.1 (custom)
Create a notification for this product.
Credits
Denver Jackson | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-3967 (GCVE-0-2026-3967)

Vulnerability from cvelistv5 – Published: 2026-03-12 00:02 – Updated: 2026-03-12 13:26
VLAI
Title
Alfresco Activiti Process Variable Serialization System SerializableType.java createObjectInputStream deserialization
Summary
A flaw has been found in Alfresco Activiti up to 7.19/8.8.0. Affected by this issue is the function deserialize/createObjectInputStream of the file activiti-core/activiti-engine/src/main/java/org/activiti/engine/impl/variable/SerializableType.java of the component Process Variable Serialization System. This manipulation causes deserialization. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://vuldb.com/?id.350396 vdb-entrytechnical-description
https://vuldb.com/?ctiid.350396 signaturepermissions-required
https://vuldb.com/?submit.768942 third-party-advisory
https://github.com/AnalogyC0de/public_exp/issues/16 exploitissue-tracking
Impacted products
Vendor Product Version
Alfresco Activiti Affected: 7.0
Affected: 7.1
Affected: 7.2
Affected: 7.3
Affected: 7.4
Affected: 7.5
Affected: 7.6
Affected: 7.7
Affected: 7.8
Affected: 7.9
Affected: 7.10
Affected: 7.11
Affected: 7.12
Affected: 7.13
Affected: 7.14
Affected: 7.15
Affected: 7.16
Affected: 7.17
Affected: 7.18
Affected: 7.19
Affected: 8.0
Affected: 8.1
Affected: 8.2
Affected: 8.3
Affected: 8.4
Affected: 8.5
Affected: 8.6
Affected: 8.7
Affected: 8.8.0
Create a notification for this product.
Credits
Ana10gy (VulDB User) VulDB
Show details on NVD website
To clipboard 

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CVE-2026-39890 (GCVE-0-2026-39890)

Vulnerability from cvelistv5 – Published: 2026-04-08 20:45 – Updated: 2026-04-09 16:16
VLAI
Title
PraisonAI Affected by Remote Code Execution via YAML Deserialization in Agent Definition Loading
Summary
PraisonAI is a multi-agent teams system. Prior to 4.5.115, the AgentService.loadAgentFromFile method uses the js-yaml library to parse YAML files without disabling dangerous tags (such as !!js/function and !!js/undefined). This allows an attacker to craft a malicious YAML file that, when parsed, executes arbitrary JavaScript code. An attacker can exploit this vulnerability by uploading a malicious agent definition file via the API endpoint, leading to remote code execution (RCE) on the server. This vulnerability is fixed in 4.5.115.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
MervinPraison PraisonAI Affected: < 4.5.115
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-40044 (GCVE-0-2026-40044)

Vulnerability from cvelistv5 – Published: 2026-04-13 18:11 – Updated: 2026-05-12 01:46
VLAI
Title
Pachno 1.0.6 FileCache Deserialization Remote Code Execution
Summary
Pachno 1.0.6 contains a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code by injecting malicious serialized objects into cache files. Attackers can write PHP object payloads to world-writable cache files with predictable names in the cache directory, which are unserialized during framework bootstrap before authentication checks occur.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Pachno Pachno Affected: 1.0.6
Create a notification for this product.
Date Public
2026-04-12 00:00
Credits
LiquidWorm as Gjoko Krstic of Zero Science Lab
Show details on NVD website
To clipboard 

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CVE-2026-40048 (GCVE-0-2026-40048)

Vulnerability from cvelistv5 – Published: 2026-04-27 07:53 – Updated: 2026-04-29 03:55
VLAI
Title
Apache Camel PQC: Unsafe Deserialization from FileBasedKeyLifecycleManager
Summary
The Camel-PQC FileBasedKeyLifecycleManager class deserializes the contents of `<keyId>.key` files in the configured key directory using java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. The cast to `java.security.KeyPair` is evaluated only after `readObject()` has already returned, so any `readObject()` side effects in the deserialized object run before the type check. An attacker who can write to the key directory used by a Camel application — for example through a path traversal into the directory, misconfigured filesystem permissions on the volume where keys are stored, a compromised key provisioning pipeline, or a symlink attack — can place a crafted serialized Java object that, when deserialized during normal key lifecycle operations, results in arbitrary code execution in the context of the application. This issue affects Apache Camel: from 4.19.0 before 4.20.0, from 4.18.0 before 4.18.2. Users are recommended to upgrade to version 4.20.0, which fixes the issue by replacing java.io.ObjectInputStream-based key and metadata storage with standard PKCS#8 (private key) / X.509 SubjectPublicKeyInfo (public key) Base64 JSON encoding. For users on the 4.18.x LTS releases stream, upgrade to 4.18.2.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Camel PQC Affected: 4.19.0 , < 4.20.0 (semver)
Affected: 4.18.0 , < 4.18.2 (semver)
Create a notification for this product.
Credits
Andrea Cosentino from ASF Venkatraman Kumar from Securin
Show details on NVD website
To clipboard 

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Mitigation

Phases: Architecture and Design, Implementation

Description:

  • 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

Phase: Implementation

Description:

  • 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

Phase: Implementation

Description:

  • Explicitly define a final object() to prevent deserialization.
Mitigation

Phases: Architecture and Design, Implementation

Description:

  • 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

Phase: Implementation

Description:

  • 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

Phases: Architecture and Design, Implementation

Description:

  • 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 ID: MIT-29

Phase: Operation

Strategy: Firewall

Description:

  • 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.

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