{"cve":"CVE-2013-4347","nvd":{"published":"2014-05-20T14:55:04.473","modified":"2026-06-16T23:57:04.190","status":"Modified","description":"The (1) make_nonce, (2) generate_nonce, and (3) generate_verifier functions in SimpleGeo python-oauth2 uses weak random numbers to generate nonces, which makes it easier for remote attackers to guess the nonce via a brute force attack.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-310"],"references":["http://www.openwall.com/lists/oss-security/2013/09/12/7","http://www.securityfocus.com/bid/62388","https://github.com/simplegeo/python-oauth2/issues/9","https://github.com/simplegeo/python-oauth2/pull/146","http://www.openwall.com/lists/oss-security/2013/09/12/7"],"products":["urbanairship:python-oauth2"],"source":"nvd","synced_at":"2026-10-19T20:33:06.232976534+00:00"},"epss":{"cve":"CVE-2013-4347","score":0.0245,"percentile":0.84386,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-rv8h-p43r-4x5r","url":"https://osv.dev/vulnerability/GHSA-rv8h-p43r-4x5r","summary":"SimpleGeo python-oauth2 vulnerable to the use of Insufficiently Random Values to generate nonces","modified":"2024-10-07T21:26:00.260793Z","packages":[{"ecosystem":"PyPI","name":"oauth2","purl":"pkg:pypi/oauth2","ranges":["<1.9rc1"],"fixed":["1.9rc1"]}]},{"id":"PYSEC-2014-86","url":"https://osv.dev/vulnerability/PYSEC-2014-86","summary":"","modified":"2026-06-10T17:02:26.463030719Z","packages":[{"ecosystem":"PyPI","name":"oauth2","purl":"pkg:pypi/oauth2","ranges":["<1.9rc1"],"fixed":["1.9rc1"]}]}],"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."]}