CVE-2025-12758 (GCVE-0-2025-12758)

Vulnerability from cvelistv5 – Published: 2025-11-27 05:00 – Updated: 2026-08-08 15:25
VLAI
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-03 16:27 UTC
CWE
  • CWE-792 - Incomplete Filtering of One or More Instances of Special Elements
  • CWE-172 - Encoding Error
Assigner
snyk CNA under the mitre root
CNA scorecard C 60/100 over 16 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
n/a validator Affected: 0 , < 13.15.22 (semver)
n/a org.webjars.npm:validator Affected: 0 , < 13.15.22 (semver)
Credits
Karol Wrótniak
Show details on NVD website
To clipboard 

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