CVE Watch7 oct 2026

CVE-2026-106448

StableLib is a stable library of useful TypeScript and JavaScript code. Prior to 2.0.4, the @stablelib/cbor CBOR map decoding path creates o

CVSS

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Sin CVSS

EPSS

0.4%

p33

KEV

—

Exploit Today

0-100

Publicado: 6 oct 2026 · Última mod.: 7 oct 2026 · CWE-1321

EPSS · 30d

0.4%EPSS · 30 días0.4%

2026-10-072026-10-22

Descripción técnica

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 of creating an ordinary own property, allowing the decoded object's prototype to contain attacker-controlled authorization or feature-flag values. Downstream code that trusts normal property lookup or merges the decoded object can therefore make security-sensitive decisions using inherited attacker data. This issue is fixed in version 2.0.4.

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