dcmjs: DS/IS VALUE REPRESENTATION INPUT VALIDATION BYPASS

published 2026-10-27 12 d ago modified 2026-11-05 3 d ago also GHSA-px68-xx5g-48q5 , EUVD-2026-117784

cvss: 9.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits: 0; none known

dcmjs is a JavaScript implementation of DICOM manipulation. Prior to 0.52.0, the DecimalString and IntegerString implementations in src/ValueRepresentation.js sanitize text with a permissive regular expression and pass the result to JavaScript's Number constructor without validating finiteness or the DICOM value-representation rules. Scientific notation overflow in a DS or IS field can produce positive or negative Infinity, while stripping alphabetic characters from signed infinity text can leave a sign-only string that converts to NaN. IntegerString also accepts exponent notation and values outside the DICOM signed 32-bit IS range. Applications that trust these parsed values can propagate invalid numbers into spatial geometry, display windowing, dose scaling, frame counts, rescaling, or volume reconstruction, causing incorrect calculations or disrupted processing. This issue is fixed in version 0.52.0.

Patch / fix

fixed in 1 links 3

npm dcmjs 0.52.0

github.com/dcmjs-org/dcmjs@81e7e11 commit
github.com/dcmjs-org/dcmjs#497 pull request
github.com/dcmjs-org/dcmjs/releases/tag/v0.52.0 release

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	dcmjs	<0.52.0	0.52.0

Affected products

dcmjs-org dcmjs

Classification

Weakness

CWE-20 Improper Input Validation
CWE-1284 Improper Validation of Specified Quantity in Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary