{"cve":"CVE-2011-2768","nvd":{"published":"2011-12-23T03:59:21.957","modified":"2026-06-16T23:31:57.953","status":"Modified","description":"Tor before 0.2.2.34, when configured as a client or bridge, sends a TLS certificate chain as part of an outgoing OR connection, which allows remote relays to bypass intended anonymity properties by reading this chain and then determining the set of entry guards that the client or bridge had selected.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://www.debian.org/security/2011/dsa-2331","https://blog.torproject.org/blog/tor-02234-released-security-patches","http://www.debian.org/security/2011/dsa-2331","https://blog.torproject.org/blog/tor-02234-released-security-patches"],"products":["tor:tor"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-2768","score":0.00723,"percentile":0.54048,"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."]}