{"cve":"CVE-2011-4885","nvd":{"published":"2011-12-30T01:55:01.563","modified":"2026-06-16T23:35:34.410","status":"Modified","description":"PHP before 5.3.9 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html","http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041","http://lists.apple.com/archives/security-announce/2012/May/msg00001.html","http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html","http://lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html"],"products":["php:php"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-4885","score":0.8337,"percentile":0.99681,"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."]}