PT-2026-3643 · Unknown · Binary-Parser

Keichi · Published 2026-01-20 · Updated 2026-02-03 · CVE-2026-1245

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions binary-parser versions prior to 2.3.0

Description A code injection flaw exists in the binary-parser library. This issue allows for arbitrary JavaScript code execution when untrusted values are used in parser field names or encoding parameters. The library directly interpolates these values into dynamically generated code without proper sanitization, enabling attackers to execute code within the Node.js process. The issue is due to the use of the Function constructor with unsanitized input. This could lead to data access, logic manipulation, or system command execution. The vulnerability is also referred to as 'ParserPoison'.

Recommendations Upgrade to binary-parser version 2.3.0 or newer.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-1245

GHSA-M39P-34QH-RH3W

Affected Products

Binary-Parser

References · 24

• https://osv.dev/vulnerability/CVE-2026-1245 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-1245 · Security Note
• https://cve.org/CVERecord?id=CVE-2026-1245 · Security Note
• https://osv.dev/vulnerability/GHSA-m39p-34qh-rh3w · Vendor Advisory
• https://github.com/keichi/binary-parser/pull/283 · Note
• https://github.com/keichi/binary-parser · Note
• https://twitter.com/TheHackersNews/status/2016152560869220423 · Twitter Post
• https://kb.cert.org/vuls/id/102648 · Note
• https://twitter.com/PurpleOps_io/status/2014247290374905960 · Twitter Post
• https://t.me/thehackernews/8290 · Telegram Post
• https://twitter.com/IT_news_for_all/status/2016153023169298730 · Twitter Post
• https://twitter.com/dailytechonx/status/2014365193971646657 · Twitter Post
• https://npmjs.com/package/binary-parser · Note
• https://twitter.com/ThreatSynop/status/2014291685824418067 · Twitter Post
• https://twitter.com/Karma_X_Inc/status/2014307946105016344 · Twitter Post