{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/51206?format=json","vulnerability_id":"VCID-c26w-5awp-1ubd","summary":"DoS caused by infinite recursion (stack overflow) in parse_char_class()\nThe parse_char_class function in regparse.c in the Onigmo (aka\nOniguruma-mod) regular expression library, as used in Ruby 2.4.0,\nallows remote attackers to cause a denial of service (deep\nrecursion and application crash) via a crafted regular expression.","aliases":[{"alias":"CVE-2017-6181"},{"alias":"GHSA-5pfp-rwpx-xgfx"}],"fixed_packages":[],"affected_packages":[],"references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-6181.json","reference_id":"","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-6181.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2017-6181","reference_id":"","reference_type":"","scores":[{"value":"0.00696","scoring_system":"epss","scoring_elements":"0.72305","published_at":"2026-06-04T12:55:00Z"},{"value":"0.00696","scoring_system":"epss","scoring_elements":"0.72347","published_at":"2026-06-05T12:55:00Z"},{"value":"0.00696","scoring_system":"epss","scoring_elements":"0.72352","published_at":"2026-06-06T12:55:00Z"},{"value":"0.00696","scoring_system":"epss","scoring_elements":"0.72333","published_at":"2026-06-07T12:55:00Z"},{"value":"0.00696","scoring_system":"epss","scoring_elements":"0.72318","published_at":"2026-06-08T12:55:00Z"},{"value":"0.00696","scoring_system":"epss","scoring_elements":"0.72343","published_at":"2026-06-09T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2017-6181"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2017-6181","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv3","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-6181"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1443435","reference_id":"1443435","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1443435"}],"weaknesses":[{"cwe_id":674,"name":"Uncontrolled Recursion","description":"The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack."}],"exploits":[],"severity_range_score":"6.5 - 7.5","exploitability":null,"weighted_severity":null,"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-c26w-5awp-1ubd"}