devalue has prototype pollution in devalue.parse and devalue.unflatten

In devalue v5.6.3, 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...

CVE-2026-30226

A flaw was found in the Svelte devalue JavaScript library. A remote attacker could exploit a prototype pollution vulnerability by sending maliciously crafted payloads to the devalue.parse or devalue.unflatten functions. Successful exploitation of this flaw could lead to a Denial of Service DoS...

Prototype Pollution

Overview devalue is a JSON.stringify, but handles cyclical references, repeated references, undefined, regular expressions, dates, Map and Set. Affected versions of this package are vulnerable to Prototype Pollution via the parse or unflatten functions. An attacker can manipulate object prototype...

CVE-2026-30226

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...

CVE-2026-30226 devalue has prototype pollution in devalue.parse and devalue.unflatten

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...

Prototype Pollution

flat is vulnerable to prototype pollution. The vulnerability exists in the unflatten function of index.js, due to the improper checks for the key1 variable which allows an attacker to modify object prototype attributes...

GHSA-2J2X-2GPW-G8FM flat vulnerable to Prototype Pollution

flat helps flatten/unflatten nested Javascript objects. A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes...

CVE-2020-36632

A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes 'prototype pollution'. It is possible to initiate the atta...

CVE-2020-36632

A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes 'prototype pollution'. It is possible to initiate the atta...

CVE-2020-36632

A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes 'prototype pollution'. It is possible to initiate the atta...

CVE-2020-36632 hughsk flat index.js unflatten prototype pollution

A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes 'prototype pollution'. It is possible to initiate the atta...

flat 安全漏洞

flat is a library from Hugh Kennedy's personal developer. It is used to take a nested Javascript object and flatten it, or to unflatten the object using the separator key. A security vulnerability exists in versions prior to flat 5.0.1, which stems from a problem with the unflatten function in th...

PT-2022-9026 · Unknown · Hughsk Flat

Name of the Vulnerable Software and Affected Versions: hughsk flat versions up to 5.0.0 Description: A critical vulnerability was found in hughsk flat, affecting the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attribute...

Prototype Pollution

safe-flat is vulnerable to prototype pollution. An attacker is able to exploit the vulnerability to inject arbitrary properties into existing construct prototypes and modify attributes such as proto, constructor and prototype via the unflatten function...

Prototype Pollution in bonnevoyager/nested-objects-util

Description nested-objects-util is vulnerable to Prototype Pollution. Proof of Concept 1. Create the following PoC file: // poc.js var unflatten = require"nested-objects-util" console.log"Before : " + .polluted; unflatten"proto.polluted": "Yes! Its Polluted" console.log"After : " + .polluted; 2...

Integer overflow

Integer overflow in the Region::unflatten function in libs/ui/Region.cpp in mediaserver in Android 6.x before 2016-09-01 and 7.0 before 2016-09-01 allows attackers to obtain sensitive information via a crafted application, aka internal bug 29983260...