{"cve":"CVE-2017-18361","nvd":{"published":"2019-02-01T09:29:00.233","modified":"2026-06-17T01:12:41.260","status":"Modified","description":"In Pylons Colander through 1.6, the URL validator allows an attacker to potentially cause an infinite loop thereby causing a denial of service via an unclosed parenthesis.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-835"],"references":["https://github.com/Pylons/colander/issues/290","https://github.com/Pylons/colander/pull/323","https://github.com/Pylons/colander/issues/290","https://github.com/Pylons/colander/pull/323"],"products":["pylonsproject:colander"],"source":"nvd","synced_at":"2026-10-19T20:54:46.948512734+00:00"},"epss":{"cve":"CVE-2017-18361","score":0.02072,"percentile":0.81453,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rv95-4wxj-6fqq","url":"https://osv.dev/vulnerability/GHSA-rv95-4wxj-6fqq","summary":"Pylons Colander Denial of Service vulnerability","modified":"2024-09-13T14:52:18.735323Z","packages":[{"ecosystem":"PyPI","name":"colander","purl":"pkg:pypi/colander","ranges":["<1.7.0"],"fixed":["1.7.0"]}]},{"id":"PYSEC-2019-167","url":"https://osv.dev/vulnerability/PYSEC-2019-167","summary":"","modified":"2023-11-08T03:59:16.040712Z","packages":[{"ecosystem":"PyPI","name":"colander","purl":"pkg:pypi/colander","ranges":["<1.7.0"],"fixed":["1.7.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}