CVE-2025-55182-PoC

⚡ React2Shell Exploit PoC CVE-2025-66478 Next.js Remote Code Execution RCE via Prototype Pollution in Server Components 🕵️‍♂️ Overview This repository contains a Proof of Concept PoC for CVE-2025-66478 also referenced as CVE-2025-55182 in some contexts, a critical vulnerability affecting Next.js...

CVE-2026-55091

flat-to-nested converts a hierarchy from a flat representation to a nested representation. Prior to 1.1.2, FlatToNested.prototype.convert in index.js uses attacker-influenced id and parent record fields directly as keys in the plain temp and pendingChildOf objects. When parent or id is proto,...

CVE-2026-55091 flat-to-nested: Prototype pollution in flat-to-nested convert() via __proto__ parent/id key

flat-to-nested converts a hierarchy from a flat representation to a nested representation. Prior to 1.1.2, FlatToNested.prototype.convert in index.js uses attacker-influenced id and parent record fields directly as keys in the plain temp and pendingChildOf objects. When parent or id is proto,...

EUVD-2026-77691

flat-to-nested converts a hierarchy from a flat representation to a nested representation. Prior to 1.1.2, FlatToNested.prototype.convert in index.js uses attacker-influenced id and parent record fields directly as keys in the plain temp and pendingChildOf objects. When parent or id is proto,...

CVE-2026-55091

flat-to-nested (NPM, versions ≥1.1.0, ≤1.1.1) is vulnerable to prototype pollution (CWE-1321) in FlatToNested.prototype.convert (index.js). The function uses attacker-controlled id and parent field values directly as keys in plain objects, so a value of "__proto__" resolves via the prototype chai...

CVE-2026-55091 flat-to-nested: Prototype pollution in flat-to-nested convert() via __proto__ parent/id key

flat-to-nested converts a hierarchy from a flat representation to a nested representation. Prior to 1.1.2, FlatToNested.prototype.convert in index.js uses attacker-influenced id and parent record fields directly as keys in the plain temp and pendingChildOf objects. When parent or id is proto,...

CVE-2026-55451 gettext-converter: Prototype pollution in js2i18next() via crafted translation keys

gettext-converter provides gettext resource conversion utilities for JavaScript. Prior to 1.3.3, js2i18next in lib/js2i18next.js splits nested translation keys using options.keyseparator, whose default value consists of two number signs, and uses each segment as a dynamic object key without...

CVE-2026-55451

CVE-2026-55451 is a prototype pollution vulnerability in gettext-converter (NPM, versions ≥1.0.3, ≤1.3.2). The js2i18next() function in lib/js2i18next.js splits nested translation keys on the key separator (default ##) and uses each segment as a dynamic object key without rejecting __proto__, con...

CVE-2026-61534 Yayson: Prototype pollution in the Store/LegacyStore deserialization

Yayson is a library for serializing and reading JSON API data in JavaScript. Prior to 4.3.0, Store and LegacyStore use attacker-controlled JSON:API type, id, and relationship names as keys in plain-object lookup tables in src/yayson/store.ts and src/yayson/legacy-store.ts. A document whose type i...

CVE-2026-90771

A flaw was found in joi. This vulnerability, known as prototype pollution, exists in the messages compilation function. A remote attacker can exploit this by supplying specially crafted proto keys in custom messages. This allows the attacker to manipulate object properties, which could lead to...

SealSecurity_Exam

SealSecurityExam Prototype pollution is a JavaScript vulnerability that enables an attacker to add arbitrary properties to global object prototypes, which may then be inherited by user-defined objects. A prototype pollution source is any user-controllable input that enables you to add arbitrary...

CVE-2026-90771

joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts proto as an error code. Attackers can supply proto keys in custom messages to replace the returned object's prototype, breaking downstream code relying on...

CVE-2026-90771 joi before 17.13.8 and 18.2.9 Prototype Pollution via messages

joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts proto as an error code. Attackers can supply proto keys in custom messages to replace the returned object's prototype, breaking downstream code relying on...

CVE-2026-90771 joi before 17.13.8 and 18.2.9 Prototype Pollution via messages

joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts proto as an error code. Attackers can supply proto keys in custom messages to replace the returned object's prototype, breaking downstream code relying on...

CVE-2026-90771

joi (the Hapi.js validation library) before versions 17.13.8 and 18.2.9 is affected by a prototype pollution vulnerability in the messages compilation function . The root cause is that the function accepts __proto__ as a valid error code, allowing an attacker to supply __proto__ keys in custom er...

EUVD-2026-76992

joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts proto as an error code. Attackers can supply proto keys in custom messages to replace the returned object's prototype, breaking downstream code relying on...

EUVD-2026-74278

n8n: Prototype Pollution via Workflow Structure Summary Can Lead to Denial of Service...

CVE-2026-3030-Prototype-Pollution-in-JSON-Merge-Patch

CVE-2026-3030 – Prototype Pollution in JSON Merge Patch Program Code Node.js root@kitploit: // server.js - Vulnerable REST API with deep merge const express = require'express'; const app = express; app.useexpress.json; let config = role: 'user', settings: ; // Insecure deep merge function...

CVE-2025-55182-Proof-of-Concept

CVE-2025-55182 Proof-of-Concept This repository contains a Proof-of-Concept PoC for CVE-2025-55182 , a vulnerability involving Prototype Pollution leading to Remote Code Execution RCE in certain server‑side rendering implementations. ⚠️ Warning: This PoC is strictly for educational, research, and...

NPM: joi: Prototype pollution via a `__proto__` language key in custom messages

NPM: joi: Prototype pollution via a proto language key in custom messages vulnerability discovered by ? in WordPress Npm joi versions = 17.2.0, 17.13.6...