{"id":"CVE-2020-13758","aliases":["EUVD-2020-5977","GHSA-wcg2-jvm2-p49v"],"status":"published","title":"modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall...","description":"modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall in Bitrix24 through 20.0.950 allows XSS by placing %00 before the payload.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0086,"percentile":0.58808,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2020-06-01T18:32:20Z","modified":"2026-06-17T02:53:36Z","products":[{"vendor":"bitrix","product":"bitrix24"}],"references":[{"url":"https://blog.deteact.com/bitrix-waf-bypass/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13758"},{"url":"https://github.com/advisories/GHSA-wcg2-jvm2-p49v"}],"sources":{"cve":[{"id":"CVE-2020-13758","description":"modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall in Bitrix24 through 20.0.950 allows XSS by placing %00 before the payload.","status":"published","published":"2020-06-01T18:32:20Z","modified":"2024-08-04T12:25:16.531Z","updated_at":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2020-5977","description":"modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall in Bitrix24 through 20.0.950 allows XSS by placing %00 before the payload.","status":"published","published":"2020-06-01T18:32:20Z","modified":"2024-08-04T12:25:16Z","updated_at":"2026-11-03T03:07:36.6695Z"}],"ghsa":[{"id":"GHSA-wcg2-jvm2-p49v","title":"modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall...","description":"modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall in Bitrix24 through 20.0.950 allows XSS by placing %00 before the payload.","status":"published","published":"2022-05-24T17:18:55Z","modified":"2023-01-29T05:02:47Z","updated_at":"2026-11-02T14:45:10.011414Z"}],"nvd":[{"id":"CVE-2020-13758","description":"modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall in Bitrix24 through 20.0.950 allows XSS by placing %00 before the payload.","status":"published","published":"2020-06-01T19:15:10.127Z","modified":"2026-06-17T02:53:36.373Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:04.922138Z"}]}}