CVE-2025-12758Versions 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 Unicod…
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-792, CWE-172
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
validator_project validator validator_project:validator | before 13.15.22 | NVD |
References
- https://gist.github.com/koral--/ad31208b25b9e3d1e2e35f1d4d72572eexploit, third-party-advisory
- https://github.com/validatorjs/validator.js/pull/2616issue-tracking, patch
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-14152011
- https://security.snyk.io/vuln/SNYK-JS-VALIDATOR-13653476exploit, third-party-advisory
- http://seclists.org/fulldisclosure/2026/Jan/27
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.