VULNERABILITY INTELLIGENCE

CVE-2025-12758

CVSS score7.5 HIGH
EPSS probability0.55%
CISA KEVNot currently listed
Published2025-11-27
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Versions of the package validator before 13.15.22 are vulnerable to Incomplete Filtering of One or More Instances of Special Elements in the isLength() function that does not take into account Unicode variation selectors (\uFE0F, \uFE0E) appearing in a sequence which lead to improper string length calculation. This can lead to an application using isLength for input validation accepting strings significantly longer than intended, resulting in issues like data truncation in databases, buffer overflows in other system components, or denial-of-service.

Weakness classification

  • report@snyk.io: CWE-792
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-172

Primary references