— Unscored

dcmjs: DS/IS VALUE REPRESENTATION INPUT VALIDATION BYPASS

CVE-2026-46350

dcmjs, a JavaScript library for DICOM manipulation used in web-based medical imaging viewers, contains an input validation bypass in its handling of DS (Decimal String) and IS (Integer String) value representations. The DecimalString and IntegerString classes in ValueRepresentation.js use a regex sanitizer followed by JavaScript's Number() constructor. While the regex strips direct NaN/Infinity strings, it preserves scientific notation (including the 'e' character), enabling: 1. Infinity injection via scientific notation overflow (1e999999) 2. NaN injection via sign-only remnants from stripped inf strings ("-inf" -> "-") 3. IS accepting scientific notation in violation of PS3.5 AFFECTED PRODUCT ================ Product: dcmjs (JavaScript DICOM manipulation library) Repository: https://github.com/dcmjs-org/dcmjs npm: https://www.npmjs.com/package/dcmjs Affected Versions: 100000) in violation of PS3.5 Section 6.2, which restricts IS to characters 0-9, +, -. (d) No range validation exists for IS values (PS3.5 requires [-2^31, 2^31-1]) or DS values (16-character max, fixed/floating-point only). VULNERABILITY DETAILS ===================== Attack Vector 1: Infinity via Scientific…

Assessment

CVSS: Not yet scored
Severity: Unscored
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 27 October 2026
Last updated: 27 October 2026
Affected: npm · dcmjs
Weakness: CWE-20

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