{"cve":"CVE-2011-5034","nvd":{"published":"2011-12-30T01:55:01.610","modified":"2026-06-16T23:35:48.793","status":"Modified","description":"Apache Geronimo 2.2.1 and earlier 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.  NOTE: this might overlap CVE-2011-4461.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html","http://secunia.com/advisories/47412","http://www.kb.cert.org/vuls/id/903934","http://www.nruns.com/_downloads/advisory28122011.pdf","http://www.ocert.org/advisories/ocert-2011-003.html"],"products":["apache:geronimo"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-5034","score":0.80569,"percentile":0.99624,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-v3h8-rw48-h4gr","url":"https://osv.dev/vulnerability/GHSA-v3h8-rw48-h4gr","summary":"Apache Geronimo Hash Collisions Cause DoS","modified":"2024-12-07T05:37:51.766019Z","packages":[{"ecosystem":"Maven","name":"org.apache.geronimo:geronimo","purl":"pkg:maven/org.apache.geronimo/geronimo","ranges":["<2.2.1"],"fixed":["2.2.1"]}]}],"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."]}