{"id":"CVE-2026-47644","aliases":["EUVD-2026-34336","GHSA-6w62-wfvj-6pfp"],"status":"published","title":"Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability","description":"Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00801,"percentile":0.57118,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-74"],"published":"2026-06-04T22:00:52Z","modified":"2026-11-10T23:23:24Z","exploits":[{"source":"pocgithub","id":"songjianyang/CVE-2026-47644","title":"songjianyang/CVE-2026-47644","date":"2026-10-15","url":"https://github.com/songjianyang/CVE-2026-47644"}],"products":[{"vendor":"microsoft","product":"copilot chat (microsoft edge)"},{"vendor":"microsoft","product":"copilot_chat"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47644","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47644"},{"url":"https://github.com/advisories/GHSA-6w62-wfvj-6pfp"}],"sources":{"cve":[{"id":"CVE-2026-47644","title":"Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability","description":"Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-06-04T22:00:52.404Z","modified":"2026-11-10T23:23:24.224Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-74"],"updated_at":"2026-11-11T00:50:10.599584Z"}],"euvd":[{"id":"EUVD-2026-34336","description":"Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-06-04T22:00:52Z","modified":"2026-11-10T23:23:24Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-11T00:24:46.475072Z"}],"ghsa":[{"id":"GHSA-6w62-wfvj-6pfp","title":"Improper neutralization of special elements in output used by a downstream component ('injection'...","description":"Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-06-05T00:31:52Z","modified":"2026-06-05T00:31:53Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T15:08:33.048787Z"}],"nvd":[{"id":"CVE-2026-47644","description":"Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.","status":"published","published":"2026-06-04T23:17:32.39Z","modified":"2026-07-23T07:10:00.113Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:12:22.371367Z"}]}}