CVE-2025-56200: validator_project validator Cross-site Scripting
Vulnerability summary
CVE-2025-56200 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in validator_project validator. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24% of scored vulnerabilities. 2 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 30-09-2025PublishedVulnerability first disclosed.
- 05-07-2026Last modifiedVulnerability information updated.
Description
A URL validation bypass vulnerability exists in validator.js through version 13.15.15. The isURL() function uses '://' as a delimiter to parse protocols, while browsers use ':' as the delimiter. This parsing difference allows attackers to bypass protocol and domain validation by crafting URLs leading to XSS and Open Redirect attacks.
CVSS metrics
6 scores · 6 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · WolfiEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · NpmEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · ChainguardEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- NVDNIST6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
0.00 pp
From 0.32% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundA93130505B258B9E4Ec9F393E7533596
Maturity: poc
27Ae092Aa40E2A057D41A0F95148F666
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Chainguard3 products
- redisinsight< 3.0.0-r0
- saf< 1.5.2-r0
- sqlpad< 7.5.7-r4
Wolfi2 products
- saf< 1.5.2-r0
- sqlpad< 7.5.7-r4
Npm1 product
- validator< 13.15.20
Ubuntu1 product
- validator.jsAll versions (No fix recorded)
Validator_project1 product
- validator≤ 3.15.15
5 vendors · 8 products