CVE-2026-106448 StableLib: Prototype poisoning via `__proto__` map keys in CBOR decoding

StableLib is a stable library of useful TypeScript and JavaScript code. Prior to 2.0.4, the @stablelib/cbor CBOR map decoding path creates ordinary JavaScript objects and assigns attacker-controlled keys with bracket assignment. A map key named proto invokes the inherited prototype setter instead...

CVE-2026-106448

The @stablelib/cbor component within the StableLib library is vulnerable to prototype poisoning (CWE-1321) in versions prior to 2.0.4 . The root cause lies in the CBOR map decoding path, where the library creates ordinary JavaScript objects and uses bracket assignment for attacker-controlled keys...

CVE-2026-106448 StableLib: Prototype poisoning via `__proto__` map keys in CBOR decoding

StableLib is a stable library of useful TypeScript and JavaScript code. Prior to 2.0.4, the @stablelib/cbor CBOR map decoding path creates ordinary JavaScript objects and assigns attacker-controlled keys with bracket assignment. A map key named proto invokes the inherited prototype setter instead...

CVE-2026-106448 StableLib: Prototype poisoning via `__proto__` map keys in CBOR decoding

StableLib is a stable library of useful TypeScript and JavaScript code. Prior to 2.0.4, the @stablelib/cbor CBOR map decoding path creates ordinary JavaScript objects and assigns attacker-controlled keys with bracket assignment. A map key named proto invokes the inherited prototype setter instead...

Prototype Pollution

Overview @stablelib/cbor is a CBOR encoder and decoder Affected versions of this package are vulnerable to Prototype Pollution via the CBOR decoding process. An attacker can manipulate the prototype of decoded objects by supplying specially crafted map keys, such as proto, which can lead to...

cbor2 security vulnerabilities

cbor2 is a binary object representation serialization format encoding and decoding library developed by Alex Grönholm as an individual developer. Versions of cbor2 prior to 5.9.0 contained security vulnerabilities. These vulnerabilities stemmed from uncontrolled recursion when decoding deeply...

Algorithmic Complexity

Overview PeterO.Cbor is a C implementation of Concise Binary Object Representation CBOR. Affected versions of this package are vulnerable to Algorithmic Complexity due to use of an inefficient algorithm in the DecodeFromBytes or other decoding mechanisms. An attacker can cause a denial of service...