Common Weakness Enumeration

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

CVE-2026-26021 (GCVE-0-2026-26021)

Vulnerability from cvelistv5 – Published: 2026-02-11 21:18 – Updated: 2026-02-12 21:16
VLAI
Title
Prototype pollution in set-in
Summary
set-in provides the set value of nested associative structure given array of keys. A prototype pollution vulnerability exists in the the npm package set-in (>=2.0.1, < 2.0.5). Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using Array.prototype. This has been fixed in version 2.0.5.
Severity
9.4 (Critical)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
ahdinosaur set-in Affected: >= 2.0.1, < 2.0.5
Create a notification for this product.
Show details on NVD website
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CVE-2026-27212 (GCVE-0-2026-27212)

Vulnerability from cvelistv5 – Published: 2026-02-21 05:43 – Updated: 2026-02-24 18:53
VLAI
Title
Swiper has a Prototype Pollution Vulnerability
Summary
Swiper is a free and mobile touch slider with hardware accelerated transitions and native behavior. Versions 6.5.1 through 12.1.1 have a Prototype pollution vulnerability. The vulnerability resides in line 94 of shared/utils.mjs, where the indexOf() function is used to check whether user provided input contain forbidden strings. Despite a previous fix that attempted to mitigate prototype pollution by checking whether user input contained a forbidden key, it is still possible to pollute Object.prototype via a crafted input using Array.prototype. The exploit works across Windows and Linux and on Node and Bun runtimes. Any application that processes attacker-controlled input using this package may be affected by the following: Authentication Bypass, Denial of Service and RCE. This issue is fixed in version 12.1.2.
Severity
9.4 (Critical)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
nolimits4web swiper Affected: >= 6.5.1, < 12.1.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-27524 (GCVE-0-2026-27524)

Vulnerability from cvelistv5 – Published: 2026-03-18 01:34 – Updated: 2026-06-23 16:14 X_Open Source
VLAI
Title
OpenClaw < 2026.2.21 - Prototype Pollution via Debug Override Path
Summary
OpenClaw versions prior to 2026.2.21 accept prototype-reserved keys in runtime /debug set override object values, allowing prototype pollution attacks. Authorized /debug set callers can inject __proto__, constructor, or prototype keys to manipulate object prototypes and bypass command gate restrictions.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/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-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
OpenClaw OpenClaw Affected: 0 , < 2026.2.21 (semver)
Create a notification for this product.
Date Public
2026-02-21 00:00
Credits
tdjackey
Show details on NVD website
To clipboard 

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CVE-2026-27837 (GCVE-0-2026-27837)

Vulnerability from cvelistv5 – Published: 2026-02-26 00:19 – Updated: 2026-02-26 14:40
VLAI
Title
Dottie vulnerable to prototype pollution bypass via non-first path segments in set() and transform()
Summary
Dottie provides nested object access and manipulation in JavaScript. Versions 2.0.4 through 2.0.6 contain an incomplete fix for CVE-2023-26132. The prototype pollution guard introduced in commit `7d3aee1` only validates the first segment of a dot-separated path, allowing an attacker to bypass the protection by placing `__proto__` at any position other than the first. Both `dottie.set()` and `dottie.transform()` are affected. Version 2.0.7 contains an updated fix to address the residual vulnerability.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
mickhansen dottie.js Affected: >= 2.0.4, < 2.0.7
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-28794 (GCVE-0-2026-28794)

Vulnerability from cvelistv5 – Published: 2026-03-06 05:02 – Updated: 2026-03-09 19:53
VLAI
Title
oRPC: Prototype Pollution in `@orpc/client` via `StandardRPCJsonSerializer` Deserialization
Summary
oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.6, a prototype pollution vulnerability exists in the RPC JSON deserializer of the @orpc/client package. The vulnerability allows unauthenticated, remote attackers to inject arbitrary properties into the global Object.prototype. Because this pollution persists for the lifetime of the Node.js process and affects all objects, it can lead to severe security breaches, including authentication bypass, denial of service, and potentially Remote Code Execution. This issue has been patched in version 1.13.6.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
middleapi orpc Affected: < 1.13.6
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-29063 (GCVE-0-2026-29063)

Vulnerability from cvelistv5 – Published: 2026-03-06 18:25 – Updated: 2026-03-06 19:33
VLAI
Title
Immutable.js: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in immutable
Summary
Immutable.js provides many Persistent Immutable data structures. Prior to versions 3.8.3, 4.3.7, and 5.1.5, Prototype Pollution is possible in immutable via the mergeDeep(), mergeDeepWith(), merge(), Map.toJS(), and Map.toObject() APIs. This issue has been patched in versions 3.8.3, 4.3.7, and 5.1.5.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
immutable-js immutable-js Affected: < 3.8.3
Affected: < 4.3.7
Affected: < 5.1.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-2950 (GCVE-0-2026-2950)

Vulnerability from cvelistv5 – Published: 2026-03-31 19:18 – Updated: 2026-04-01 13:43
VLAI
Title
lodash vulnerable to Prototype Pollution via array path bypass in `_.unset` and `_.omit`
Summary
Impact: Lodash versions 4.17.23 and earlier are vulnerable to prototype pollution in the _.unset and _.omit functions. The fix for (CVE-2025-13465: https://github.com/lodash/lodash/security/advisories/GHSA-xxjr-mmjv-4gpg) only guards against string key members, so an attacker can bypass the check by passing array-wrapped path segments. This allows deletion of properties from built-in prototypes such as Object.prototype, Number.prototype, and String.prototype. The issue permits deletion of prototype properties but does not allow overwriting their original behavior. Patches: This issue is patched in 4.18.0. Workarounds: None. Upgrade to the patched version.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
lodash lodash Affected: 4.17.23 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
lodash lodash-es Affected: 4.17.23 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
lodash lodash-amd Affected: 4.17.23 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
lodash lodash.unset Affected: 4.0.0 , < 4.18.0 (semver)
Unaffected: 4.18.0 (semver)
Create a notification for this product.
Credits
Haruna38 shpik-kr maru1009 ott3r07 zolbooo backuardo falsyvalues jonchurch jdalton UlisesGascon
Show details on NVD website
To clipboard 

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CVE-2026-2964 (GCVE-0-2026-2964)

Vulnerability from cvelistv5 – Published: 2026-02-23 01:02 – Updated: 2026-02-23 13:49
VLAI
Title
higuma web-audio-recorder-js Dynamic Config Handling WebAudioRecorder.js extend prototype pollution
Summary
A vulnerability was identified in higuma web-audio-recorder-js 0.1/0.1.1. Impacted is the function extend in the library lib/WebAudioRecorder.js of the component Dynamic Config Handling. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is considered difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5 (Medium)
CVSS:3.0/AV:N/AC:H/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
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes
  • CWE-94 - Code Injection
Assigner
References
URL Tags
https://vuldb.com/?id.347331 vdb-entrytechnical-description
https://vuldb.com/?ctiid.347331 signaturepermissions-required
https://vuldb.com/?submit.755221 third-party-advisory
Impacted products
Vendor Product Version
higuma web-audio-recorder-js Affected: 0.1
Affected: 0.1.1
Create a notification for this product.
Credits
Matan Sandori (2Bsecure) Joshua Sheridan (2Bsecure) MatanS (VulDB User) MatanS (VulDB User)
Show details on NVD website
To clipboard 

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CVE-2026-30226 (GCVE-0-2026-30226)

Vulnerability from cvelistv5 – Published: 2026-03-11 17:47 – Updated: 2026-03-12 13:51
VLAI
Title
devalue has prototype pollution in devalue.parse and devalue.unflatten
Summary
Svelte devalue is a JavaScript library that serializes values into strings when JSON.stringify isn't sufficient for the job. In devalue v5.6.3 and earlier, devalue.parse and devalue.unflatten were susceptible to prototype pollution via maliciously crafted payloads. Successful exploitation could lead to Denial of Service (DoS) or type confusion. This vulnerability is fixed in 5.6.4.
Severity
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
sveltejs devalue Affected: < 5.6.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-30785 (GCVE-0-2026-30785)

Vulnerability from cvelistv5 – Published: 2026-03-05 16:04 – Updated: 2026-03-06 10:32
VLAI
Title
RustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305)
Summary
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), Use of Password Hash With Insufficient Computational Effort vulnerability in rustdesk-client RustDesk Client rustdesk, hbb_common on Windows, MacOS, Linux (Password security module, config encryption, machine UID modules) allows Retrieve Embedded Sensitive Data. This vulnerability is associated with program files hbb_common/src/password_security.Rs, hbb_common/src/config.Rs, hbb_common/src/lib.Rs (get_uuid), machine-uid/src/lib.Rs and program routines symmetric_crypt(), encrypt_str_or_original(), decrypt_str_or_original(), get_uuid(), get_machine_id(). This issue affects RustDesk Client: through 1.4.5.
Severity
8.2 (High)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-257
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
  • CWE-323
  • CWE-916 - Use of Password Hash With Insufficient Computational Effort
Assigner
References
URL Tags
https://github.com/rustdesk/rustdesk/discussions/9229 technical-descriptionx_--config documentation
https://github.com/rustdesk/rustdesk/discussions/4979 technical-descriptionx_--config documentation
https://docs.google.com/document/d/e/2PACX-1vSds6… third-party-advisoryexploit
https://www.vulsec.org/ vdb-entrythird-party-advisory
Impacted products
Vendor Product Version
rustdesk-client RustDesk Client Affected: 0 , ≤ 1.4.5 (custom)
Create a notification for this product.
Date Public
2026-03-05 13:45
Credits
Erez Kalman Erez Kalman
Show details on NVD website
To clipboard 

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          "url": "https://github.com/rustdesk/rustdesk/discussions/9229"
        },
        {
          "tags": [
            "technical-description",
            "x_--config documentation"
          ],
          "url": "https://github.com/rustdesk/rustdesk/discussions/4979"
        },
        {
          "tags": [
            "third-party-advisory",
            "exploit"
          ],
          "url": "https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub"
        },
        {
          "tags": [
            "vdb-entry",
            "third-party-advisory"
          ],
          "url": "https://www.vulsec.org/"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Use one-way hashing (Argon2id) for passwords. Use OS-native credential stores (DPAPI, Keychain, libsecret) for recoverable secrets. Apply proper KDF. Use random nonces."
            }
          ],
          "value": "Use one-way hashing (Argon2id) for passwords. Use OS-native credential stores (DPAPI, Keychain, libsecret) for recoverable secrets. Apply proper KDF. Use random nonces."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "RustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305)",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Set restrictive file permissions on TOML config files. Avoid saving peer passwords."
            }
          ],
          "value": "Set restrictive file permissions on TOML config files. Avoid saving peer passwords."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2fdefc65-d750-4b8d-96ee-6e2c0c42dbfe",
    "assignerShortName": "VULSec",
    "cveId": "CVE-2026-30785",
    "datePublished": "2026-03-05T16:04:36.443Z",
    "dateReserved": "2026-03-05T14:13:35.407Z",
    "dateUpdated": "2026-03-06T10:32:38.348Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation

Phase: Implementation

Description:

  • By freezing the object prototype first (for example, Object.freeze(Object.prototype)), modification of the prototype becomes impossible.
Mitigation

Phase: Architecture and Design

Description:

  • By blocking modifications of attributes that resolve to object prototype, such as proto or prototype, this weakness can be mitigated.
Mitigation

Phase: Implementation

Strategy: Input Validation

Description:

  • When handling untrusted objects, validating using a schema can be used.
Mitigation

Phase: Implementation

Description:

  • By using an object without prototypes (via Object.create(null) ), adding object prototype attributes by accessing the prototype via the special attributes becomes impossible, mitigating this weakness.
Mitigation

Phase: Implementation

Description:

  • Map can be used instead of objects in most cases. If Map methods are used instead of object attributes, it is not possible to access the object prototype or modify it.
CAPEC-1: Accessing Functionality Not Properly Constrained by ACLs

In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.

CAPEC-180: Exploiting Incorrectly Configured Access Control Security Levels

An attacker exploits a weakness in the configuration of access controls and is able to bypass the intended protection that these measures guard against and thereby obtain unauthorized access to the system or network. Sensitive functionality should always be protected with access controls. However configuring all but the most trivial access control systems can be very complicated and there are many opportunities for mistakes. If an attacker can learn of incorrectly configured access security settings, they may be able to exploit this in an attack.

CAPEC-77: Manipulating User-Controlled Variables

This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An adversary can override variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the adversary can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

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