PHP JWT Framework: JWSVerifier uses algorithm from unprotected header, enabling algorithm confusion attacks

Summary JWSVerifier::getAlgorithm in src/Library/Signature/JWSVerifier.php line 144 merges protected and unprotected headers using PHP's spread operator: php $completeHeader = ...$signature-getProtectedHeader, ...$signature-getHeader; In PHP, when spreading arrays with duplicate string keys, the...

Exploit for Memory Allocation with Excessive Size Value in Apache Http_Server

CVE-2026-49975 HTTP/2 Bomb ★ CVE-2026-49975 HTTP/2 Bomb PoC ★...

Prototype Pollution

Overview piscina is an A fast, efficient Node.js Worker Thread Pool implementation Affected versions of this package are vulnerable to Prototype Pollution via the options.filename property in the constructor and run function. An attacker can execute arbitrary code and gain control over worker...

Prototype Pollution

Overview org.webjars.npm:jodit is a Jodit is awesome and usefully wysiwyg editor with filebrowser Affected versions of this package are vulnerable to Prototype Pollution via the Jodit.modules.Helpers.set function. An attacker can inject unexpected properties into Object.prototype by supplying a...

Prototype Pollution

Overview jodit is a Jodit is awesome and usefully wysiwyg editor with filebrowser Affected versions of this package are vulnerable to Prototype Pollution via the Jodit.modules.Helpers.set function. An attacker can inject unexpected properties into Object.prototype by supplying a crafted chain...

ROOT-APP-NPM-CVE-2018-16469 CVE-2018-16469 in @rootio/merge - Patched by Root

Root has patched CVE-2018-16469 in the @rootio/merge package for Root:npm. Multiple fixed versions available...

ROOT-APP-NPM-CVE-2020-28499 CVE-2020-28499 in @rootio/merge - Patched by Root

Root has patched CVE-2020-28499 in the @rootio/merge package for Root:npm. Multiple fixed versions available...

js-yaml: js-yaml: Denial of Service via quadratic CPU time parsing with merge keys

A flaw was found in js-yaml, a JavaScript YAML parser and dumper. When merge keys are enabled, a remote attacker could exploit this vulnerability by crafting a YAML document where a chain of mappings uses merge keys, each merging the previous one. This can lead to a significant increase in CPU ti...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via header merging in JWSVerifier::getAlgorithm and JWEDecrypter. An attacker can bypass protected header validation by placing conflicting alg or enc values in unprotected headers, which...

NPM: n8n: Merge Node SQL Mode Prototype Pollution

NPM: n8n: Merge Node SQL Mode Prototype Pollution vulnerability discovered by ? in WordPress Npm n8n versions 2.25.7...

n8n: Merge Node SQL Mode Prototype Pollution

Impact An authenticated user with permission to create or modify workflows could pollute the sandbox used by the Merge node's SQL Query mode. Because the sandbox context was cached and reused across all workflow executions on the instance, prototype mutations introduced by one user's workflow...

GHSA-9C38-2MCM-Q7F7 n8n: Merge Node SQL Mode Prototype Pollution

Impact An authenticated user with permission to create or modify workflows could pollute the sandbox used by the Merge node's SQL Query mode. Because the sandbox context was cached and reused across all workflow executions on the instance, prototype mutations introduced by one user's workflow...

GHSA-M2V9-299J-RV96 pypdf: Possible infinite loop when processing outlines/bookmarks in writer

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with outlines into a writer. Patches This has been fixed in pypdf==6.13.0. Workarounds If you cannot upgrade yet, consider applying the changes from PR 3830...

BIT-MONGODB-2026-9747 Crafted cross-shard merge aggregation crashes MongoDB Server

Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server...

PT-2026-50177

Name of the Vulnerable Software and Affected Versions n8n versions prior to 2.25.7 n8n versions prior to 2.26.2 Description An authenticated user with permissions to create or modify workflows can pollute the sandbox used by the Merge node's SQL Query mode. Since the sandbox context is cached and...

Prototype Pollution

Overview i18next-fs-backend is an i18next-fs-backend is a backend layer for i18next using in Node.js and for Deno to load translations from the filesystem. Affected versions of this package are vulnerable to Prototype Pollution via the getLastOfPath method. An attacker can modify global object...

JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases

Summary A crafted YAML document can trigger algorithmic CPU exhaustion in js-yaml merge-key processing by repeating the same alias many times in a merge sequence. This causes quadratic parse-time behavior relative to input size and can block a Node.js worker/event loop for seconds with a relative...

Inefficient Algorithmic Complexity

Overview js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the storeMappingPair function in loader.js when handling repeated aliases in merge sequences. An attacker can exhaust CPU resources and...

NPM: JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases

NPM: JS-YAML: Quadratic-complexity DoS in merge key handling via repeated aliases vulnerability discovered by ? in WordPress Npm js-yaml versions = 4.1.1...

Inefficient Algorithmic Complexity

Overview org.webjars.npm:js-yaml is a human-friendly data serialization language. Affected versions of this package are vulnerable to Inefficient Algorithmic Complexity in the storeMappingPair function in loader.js when handling repeated aliases in merge sequences. An attacker can exhaust CPU...