PT-2026-21362 · Unknown · Asn.1 Typescript Esm Library

Jonathanwilbur · Publicado 2026-02-21 · Atualizado 2026-03-03 · CVE-2026-27452

Positive Technologies (AI Summary)

CVSS v4.0

9.2

Crítica

Vetor base

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

Name of the Vulnerable Software and Affected Versions ASN.1 TypeScript ESM library versions 11.0.5 and below

Description The ASN.1 TypeScript ESM library, which includes codecs for Basic Encoding Rules (BER) and Distinguished Encoding Rules (DER), has an issue where decoding an INTEGER could potentially leak the underlying ArrayBuffer in versions 11.0.5 and earlier.

Recommendations Update to version 11.0.6 or later.

Exploit

Correção

Information Disclosure

Enumeração de Fraquezas

CWE-200

Identificadores relacionados

CVE-2026-27452

GHSA-H5RW-VXJR-8Q79

Produtos afetados

Asn.1 Typescript Esm Library

Referências · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27452.json · Exploit
• https://github.com/JonathanWilbur/asn1-ts/security/advisories/GHSA-h5rw-vxjr-8q79 · Aviso do Fabricante
• https://twitter.com/CVEnew/status/2025154179031785475 · Publicação no Twitter
• https://t.me/cveNotify/153998 · Publicação no Telegram
• https://twitter.com/VulmonFeeds/status/2025121740301406694 · Publicação no Twitter
• https://nvd.nist.gov/vuln/detail/CVE-2026-27452 · Nota de Segurança
• https://t.me/cveNotify/152705 · Publicação no Telegram
• https://t.me/CVEtracker/45358 · Publicação no Telegram
• https://osv.dev/vulnerability/CVE-2026-27452 · Aviso do Fabricante