CVE-2026-33203

CVE-2026-33203 affects SiYuan prior to 3.6.2. The SiYuan kernel WebSocket server accepts unauthenticated connections when an explicit auth keepalive parameter is present. After connection, messages are parsed with unchecked type assertions on attacker-controlled JSON, allowing a remote attacker t...

CVE-2026-32874

UltraJSON (ujson) for Python, C-based fast JSON encoder/decoder, is affected in versions 5.4.0–5.11.0 by a memory-leak in parsing large integers that fall outside [-2^63, 2^64-1]. The leak copies the integer’s string form plus an extra NULL byte and occurs regardless of whether the integer parses...

CVE-2026-32874 UltraJSON has a Memory Leak parsing large integers allows DoS

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.4.0 through 5.11.0 contain an accumulating memory leak in JSON parsing large outside of the range -2^63, 2^64 - 1 integers. The leaked memory is a copy of the string form of the integer plus a...

CVE-2026-32874 UltraJSON has a Memory Leak parsing large integers allows DoS

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Versions 5.4.0 through 5.11.0 contain an accumulating memory leak in JSON parsing large outside of the range -2^63, 2^64 - 1 integers. The leaked memory is a copy of the string form of the integer plus a...

SUSE SLED15 / SLES15 / openSUSE 15 Security Update : jq (SUSE-SU-2026:0931-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2026:0931-1 advisory. This update for jq fixes the following issue: - CVE-2025-9403: test suite assertion failure in JSON parsi...

Prototype Pollution via parse() in NodeJS flatted

--- Summary The parse function in flatted can use attacker-controlled string values from the parsed JSON as direct array index keys, without validating that they are numeric. Since the internal input buffer is a JavaScript Array, accessing it with the key "\proto\" returns Array.prototype via the...

org.webjars.npm:file-entry-cache (>=5.0.1, <=6.0.1), org.webjars.npm:flat-cache (>=2.0.1, <=3.0.4) +6 more potentially affected by CVE-2026-33228 via org.webjars.npm:flatted (>=2.0.1, <=3.3.4)

org.webjars.npm:flatted MAVEN version =2.0.1, =5.0.1, =2.0.1, =3.3.1, =0.3.16, =0.2.107, =1.1.13, =0.1.30, =1.7.6, =2.0.2 Source cves: CVE-2026-33228 Source advisory: SNYK:JAVA-ORGWEBJARSNPM-15700434...

Improper handling of null Unicode character when parsing JSON in github.com/modelcontextprotocol/go-sdk

The Go SDK recently transitioned to the segmentio/encoding library for JSON parsing in version 1.3.1. While this change addressed both case-insensitivity and ASCII folding issues, the new parser implemented aggressive key matching that treated keys with null Unicode characters appended at the end...

Interpretation Conflict

Overview Affected versions of this package are vulnerable to Interpretation Conflict in the JSON parsing process. An attacker can manipulate message fields by appending null Unicode characters to keys, causing key collisions and overriding intended values by submitting specially crafted JSON...

GHSA-Q382-VC8Q-7JHJ Improper handling of null Unicode character when parsing JSON in github.com/modelcontextprotocol/go-sdk

The Go SDK recently transitioned to the segmentio/encoding library for JSON parsing in version 1.3.1. While this change addressed both case-insensitivity and ASCII folding issues, the new parser implemented aggressive key matching that treated keys with null Unicode characters appended at the end...

SUSE-SU-2026:0931-1 Security update for jq

This update for jq fixes the following issue: - CVE-2025-9403: test suite assertion failure in JSON parsing consistency validation bsc1248600...

GHSA-3G9H-9HP4-654V SiYuan has an Unauthenticated WebSocket DoS via Auth Keepalive Bypass

Summary The SiYuan kernel WebSocket server accepts unauthenticated connections when a specific “auth keepalive” query parameter is present. After connection, incoming messages are parsed using unchecked type assertions on attacker-controlled JSON. A remote attacker can send malformed messages tha...

SiYuan has an Unauthenticated WebSocket DoS via Auth Keepalive Bypass

Summary The SiYuan kernel WebSocket server accepts unauthenticated connections when a specific “auth keepalive” query parameter is present. After connection, incoming messages are parsed using unchecked type assertions on attacker-controlled JSON. A remote attacker can send malformed messages tha...

PT-2026-26211

Name of the Vulnerable Software and Affected Versions SiYuan versions prior to 3.6.2 Description SiYuan is a personal knowledge management system. The kernel WebSocket server accepts unauthenticated connections when a specific "auth keepalive" query parameter is present. After connection, incomin...

@alfresco/adf-testing (6.0.0-A.2-8258), @algolia/coquille (>=0.0.2, <=0.0.13) +362 more potentially affected by CVE-2026-32141 via flatted (>=3.0.1, <=3.3.4)

flatted NPM version =3.0.1, =0.0.2, =1.1.0, =1.0.0, =1.0.0, =0.0.10, =0.0.11, =0.0.4, =1.0.0, =1.0.0, =0.0.20, =0.0.19, =1.2.2, =1.5.8 and more Source cves: CVE-2026-32141 Source advisory: OSV:GHSA-25H7-PFQ9-P65F...

@deno/sandbox (>=0.0.9, <=0.6.0), @ekairos/cli (>=1.22.35, <=1.22.106-beta.feature-context-event-reaction-architecture.0) +65 more potentially affected by CVE-2026-30226 via devalue (>=5.0.0, <=5.6.3)

devalue NPM version =5.0.0, =0.0.9, =1.22.35, =1.22.102-beta.feature-lab-task-sandbox-beta.0, =1.21.52-beta.0, =1.22.4-beta.development.0, =1.22.13-beta.development.0, =1.22.39, =1.22.11-beta.development.0, =1.21.56-beta.0, =1.21.53-beta.0, =1.22.35, =1.21.88-beta.0, =0.0.0-dev-20260121145510,...

CVE-2026-27896

The CVE-2026-27896 concerns the Go MCP SDK, affected in versions prior to 1.3.1, where Go’s json.Unmarshal (case-insensitive field matching) could accept non-standard JSON-RPC/MCP field casing. This violates JSON-RPC 2.0’s exact field names and could allow messages to bypass intermediary inspecti...

PT-2026-22069

Name of the Vulnerable Software and Affected Versions Go MCP SDK versions prior to 1.3.1 Description The Go MCP SDK used Go's standard encoding/json.Unmarshal for JSON-RPC and MCP protocol message parsing. Go's standard library performs case-insensitive matching of JSON keys to struct field tags,...

WireGuard Portal v2 安全漏洞

WireGuard Portal v2 is a web-based configuration portal developed by h44z as an individual project. Versions of WireGuard Portal v2 prior to 2.1.3 contained security vulnerabilities. These vulnerabilities stemmed from the server’s inability to protect the IsAdmin field when parsing JSON request...

CVE-2026-25925

PowerDocu (Windows GUI) is vulnerable before version 2.4.0 due to JSON deserialization in Flow/App packages. The app blindly trusts the $type property, allowing an attacker to instantiate arbitrary .NET objects and execute code. This yields high-severity, local, with user interaction required. Fi...