CVE-2026-27452
Medium
Description
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductJonathanwilbur Asn1-ts
PublishedFeb 21, 2026
First seenFeb 21, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- jonathanwilbur asn1-ts11.0.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| jonathanwilbur asn1-ts | v < 11.0.6 | 11.0.6 |
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