{"cve":"CVE-2015-2327","nvd":{"published":"2015-12-02T01:59:00.113","modified":"2026-06-17T00:23:55.907","status":"Modified","description":"PCRE before 8.36 mishandles the /(((a\\2)|(a*)\\g<-1>))*/ pattern and related patterns with certain internal recursive back references, which allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-119"],"references":["http://rhn.redhat.com/errata/RHSA-2016-2750.html","http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup","http://www.fortiguard.com/advisory/FG-VD-15-010/","http://www.openwall.com/lists/oss-security/2015/11/29/1","http://www.securityfocus.com/bid/74924"],"products":["pcre:perl_compatible_regular_expression_library"],"source":"nvd","synced_at":"2026-10-19T20:37:45.466985407+00:00"},"epss":{"cve":"CVE-2015-2327","score":0.04049,"percentile":0.90635,"date":"2026-10-31"},"kev":null,"osv":[],"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."]}