Affected: CleanStart: azure-functions-node, CleanStart: jitsucom-jitsu
CVE-2026-44292 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated message constructors copied enumerable properties from a provided properties object without filtering the __proto__ key. If an application constructed a message from an attacker-controlled plain object, an own enumerable __proto__ property could alter the prototype of that individual message instance. This vulnerability is fixed in 7.5.6 and 8.0.2.
Affected: npm: protobufjs
## Summary
protobufjs generated message constructors copied enumerable properties from a provided properties object without filtering the `__proto__` key. If an application constructed a message from an attacker-controlled plain object, an own enumerable `__proto__` property could alter the prototype of that individual message instance.
## Impact
An attacker who can control the properties object passed to a generated protobufjs message constructor or creation helper may be able to modify the prototype chain of the resulting message instance.
This is a per-instance prototype injection issue. It does not pollute `Object.prototype` or other global prototypes. The impact depends on downstream application behavior, such as relying on inherited properties, prototype methods, or `instanceof` checks for message objects.
Applications that only decode binary protobuf data, or that construct messages from trusted application-defined objects, are not directly affected by this issue.
## Preconditions
- The application must allow an attacker to control or influence a plain object used to construct a protobufjs message. - The object must contain an own enumerable `__proto__` property, for example from parsed JSON input. - The application must pass that object to a generated message constructor or creation helper that copies arbitrary enumerable properties.
## Workarounds
Do not pass attacker-controlled plain objects directly to generated message constructors with affected versions…
brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity fast-uri: fast-uri: Security policy bypass due to improper Unicode hostname canonicalization protobufjs: protobufjs: Denial of Service via uncontrolled recursion in protobuf decoding protobufjs: protobufjs: Denial of Service via crafted schema protobufjs: protobufjs: Arbitrary Code Execution via prototype pollution protobufjs: protobufjs: Data integrity impact due to prototype pollution protobufjs: protobufjs: Denial of Service via crafted JSON descriptors linkify-it: linkify-it: Denial of Service via algorithmic complexity vulnerability dompurify: DOMPurify: Cross-site scripting vulnerability allows code execution tar: node-tar: Denial of Service via crafted gzip bomb tar: Node-tar: Denial of Service via malformed tar archive header
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Ansible Automation Platform ausnutzen, um Sicherheitsmaßnahmen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, einen Denial-of-Service-Zustand auszulösen oder beliebigen Code auszuführen.