CVE-2026-27452

ASN.1 TypeScript Library: Decoding an INTEGER could leak the underlying ArrayBuffer

CVSS 9.2 CRITICALEPSS 0.3%CWE-200

Vexday Risk Score

28Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 9.2EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

21 feb 2026Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

ASN.1 TypeScript ESM library, including codecs for Basic Encoding Rules (BER) and Distinguished Encoding Rules (DER). In versions 11.0.5 and below, in some cases, decoding an INTEGER could leak the underlying ArrayBuffer. This issue is expected to be fixed in version 11.0.6.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Productos afectados

JonathanWilbur · asn1-ts

Referencias

https://github.com/JonathanWilbur/asn1-ts/security/advisories/GHSA-h5rw-vxjr-8q79