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High · 7.5 Public exploit CVE-2025-12758 EUVD-2025-199795GHSA-vghf-hv5q-vc2g

Validator is Vulnerable to Incomplete Filtering of One or More Instances of Special Elements

Published Nov 27, 2025 · Updated Aug 8, 2026 · Assigned by snyk

Package: saf Package: sqlpad Package: sqlpad-compat Package: validator Ecosystem: npm Ecosystem: Wolfi

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.

Affected products

VendorProductAffectedFixed
— validator < 13.15.22 13.15.22
— org.webjars.npm:validator < 13.15.22 13.15.22

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

Wolfi

ReleasePackageFixed inAdvisory
Wolfi rolling saf 1.5.2-r0 —
Wolfi rolling sqlpad +1 7.5.7-r4 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
npm validator < 13.15.22 13.15.22 GHSA-vghf-hv5q-vc2g

Advisories 1

References