{"cve":"CVE-2021-45821","nvd":{"published":"2022-03-16T15:15:16.020","modified":"2026-06-17T04:14:07.270","status":"Modified","description":"A blind SQL injection vulnerability exists in Xbtit 3.1 via the sid parameter in ajaxchat/getHistoryChatData.php file that is accessible by a registered user. As a result, a malicious user can extract sensitive data such as usernames and passwords and in some cases use this vulnerability in order to get a remote code execution on the remote web server.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-89"],"references":["https://emaragkos.gr/infosec-adventures/xbtit-3-1-sql-njection/","https://github.com/btiteam/xbtit-3.1/blob/master/ajaxchat/getHistoryChatData.php","https://github.com/btiteam/xbtit-3.1/issues/6","https://emaragkos.gr/infosec-adventures/xbtit-3-1-sql-njection/","https://github.com/btiteam/xbtit-3.1/blob/master/ajaxchat/getHistoryChatData.php"],"products":["btiteam:xbtit"],"source":"nvd","synced_at":"2026-10-19T21:29:06.454770966+00:00"},"epss":{"cve":"CVE-2021-45821","score":0.02675,"percentile":0.85786,"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."]}