{"cve":"CVE-2011-5243","nvd":{"published":"2012-11-06T12:21:27.117","modified":"2026-06-16T23:36:12.780","status":"Modified","description":"TwitterOAuth does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://www.unrest.ca/peerjacking","http://www.unrest.ca/peerjacking"],"products":["abraham_williams:twitteroauth"],"source":"nvd","synced_at":"2026-10-19T20:25:53.526315492+00:00"},"epss":{"cve":"CVE-2011-5243","score":0.00527,"percentile":0.44629,"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."]}