{"id":"CVE-2009-2059","aliases":["EUVD-2009-2055","GHSA-58hv-2vjm-27h5"],"status":"published","title":"Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document...","description":"Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an \"SSL tampering\" attack.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01298,"percentile":0.706,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2009-06-15T19:00:00Z","modified":"2026-06-16T23:08:40Z","products":[{"vendor":"opera","product":"opera_browser"}],"references":[{"url":"http://research.microsoft.com/pubs/79323/pbp-final-with-update.pdf","tags":["x_refsource_MISC","x_transferred","Exploit"]},{"url":"http://research.microsoft.com/apps/pubs/default.aspx?id=79323","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-2059"},{"url":"https://github.com/advisories/GHSA-58hv-2vjm-27h5"}],"sources":{"cve":[{"id":"CVE-2009-2059","description":"Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an \"SSL tampering\" attack.","status":"published","published":"2009-06-15T19:00:00Z","modified":"2024-09-17T02:20:59.24Z","updated_at":"2026-11-02T14:33:23.041383Z"}],"euvd":[{"id":"EUVD-2009-2055","description":"Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an \"SSL tampering\" attack.","status":"published","published":"2009-06-15T19:00:00Z","modified":"2024-09-17T02:20:59Z","updated_at":"2026-11-03T00:28:41.388341Z"}],"ghsa":[{"id":"GHSA-58hv-2vjm-27h5","title":"Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document...","description":"Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an \"SSL tampering\" attack.","status":"published","published":"2022-05-02T03:31:16Z","modified":"2023-01-31T05:08:09Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:49:20.892642Z"}],"nvd":[{"id":"CVE-2009-2059","description":"Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an \"SSL tampering\" attack.","status":"published","published":"2009-06-15T19:30:05.437Z","modified":"2026-06-16T23:08:40.713Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:01:35.733785Z"}]}}