{"id":"CVE-2026-30879","aliases":["EUVD-2026-17263","GHSA-jmq3-x8q7-j9qm"],"status":"published","title":"baserCMS: Cross-site scripting vulnerability in blog post","description":"baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00242,"percentile":0.15462,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2026-03-31T00:45:50Z","modified":"2026-10-28T02:30:59Z","fixes":[{"ecosystem":"Packagist","package":"baserproject/basercms","fixed_in":["5.2.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"baserproject/basercms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.2.2"},{"fixed":"5.2.3"}]}]},{"source":"osv","ecosystem":"Packagist","package":"baserproject/basercms","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.2.3"}]}],"versions":["0.0.1","0.0.2","0.0.3","0.0.4","0.0.5","0.0.6","0.0.7","0.0.8","1.0.0","2.0.0-rc1","2.0.0-rc2","2.0.0-rc3","2.0.0-rc4","2.0.0-rc5","2.0.0-rc6","3.0.10","3.0.10.1","3.0.11","3.0.11.1","3.0.12","3.0.13","3.0.14","3.0.15","3.0.16","3.0.17","3.0.18","3.0.19","3.0.20","3.0.21","3.0.22","3.0.23","3.0.24","3.0.25","3.0.26","3.0.7","3.0.7.1","3.0.8","3.0.8.1","3.0.9","3.0.9.1","4.0.0","4.0.0-beta","4.0.1","4.0.10","4.0.10.1","4.0.11","4.0.2","4.0.2.1","4.0.3","4.0.4","4.0.5","4.0.5.1","4.0.5.2","4.0.6","4.0.7","4.0.8","4.0.9","4.1.0","4.1.0.1","4.1.1","4.1.2","4.1.3","4.1.4","4.1.5","4.1.6","4.1.7","4.1.8","4.2.0","4.2.1","4.2.2","4.2.3","4.2.4","4.2.5","4.3.0","4.3.1","4.3.2","4.3.3","4.3.4","4.3.5","4.3.6","4.3.7","4.3.7.1","4.4.0","4.4.1","4.4.1.1","4.4.2","4.4.2.1","4.4.3","4.4.4","4.4.5","4.4.6","4.4.7","4.4.8","4.5.0","4.5.1","4.5.2","4.5.3","4.5.4","4.5.5","4.5.6","4.6.0","4.6.1","4.6.1.1","4.6.2","4.6.3","4.7.0","4.7.2","4.7.3","4.7.5","4.7.6","4.7.7","4.7.8","4.8.0","4.8.1","4.8.2","4.8.3","5.0.0","5.0.0-beta1","5.0.0-beta2","5.0.0-beta3","5.0.0-beta4","5.0.1","5.0.10","5.0.11","5.0.12","5.0.14","5.0.15","5.0.16","5.0.17","5.0.18","5.0.19","5.0.2","5.0.20","5.0.21","5.0.3","5.0.4","5.0.5","5.0.6","5.0.7","5.0.8","5.0.9","5.1.0","5.1.1","5.1.10","5.1.2","5.1.3","5.1.4","5.1.5","5.1.6","5.1.7","5.1.8","5.1.9","5.2.0","5.2.1","5.2.2"]}],"products":[{"vendor":"basercms","product":"basercms"},{"vendor":"baserproject","product":"basercms"}],"references":[{"url":"https://github.com/baserproject/basercms/security/advisories/GHSA-jmq3-x8q7-j9qm","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://basercms.net/security/JVN_20837860","tags":["x_refsource_MISC","Vendor Advisory","web"]},{"url":"https://github.com/baserproject/basercms/releases/tag/5.2.3","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-30879","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jmq3-x8q7-j9qm"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30879.json","tags":["advisory"]},{"url":"https://github.com/baserproject/basercms","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-30879","title":"baserCMS: Cross-site scripting vulnerability in blog post","description":"baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T00:45:50.416Z","modified":"2026-03-31T14:00:32.272Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:43:56.024247Z"}],"euvd":[{"id":"EUVD-2026-17263","description":"baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T00:45:50Z","modified":"2026-03-31T14:00:32Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:25:25.377294Z"}],"ghsa":[{"id":"GHSA-jmq3-x8q7-j9qm","title":"baserCMS has a cross-site scripting vulnerability in blog posts","description":"baserCMS has a cross-site scripting vulnerability in blog posts.\n\n### Target\nbaserCMS 5.2.1 and earlier versions\n\n### Vulnerability\n\nMalicious Javascript may be executed in blog posts.\n\n### Countermeasures\nUpdate to the latest version of baserCMS\n\nPlease refer to the following page to reference for more information.\nhttps://basercms.net/security/JVN_20837860\n\n### Credits\n\nGai Tanaka@Mitsui Bussan Secure Directions, Inc.","status":"published","published":"2026-03-31T22:43:10Z","modified":"2026-03-31T22:43:11Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:39:47.075804Z"}],"nvd":[{"id":"CVE-2026-30879","description":"baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T01:16:36.127Z","modified":"2026-06-17T10:33:04.85Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:12.261218Z"}],"osv":[{"id":"CVE-2026-30879","title":"baserCMS: Cross-site scripting vulnerability in blog post","description":"baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.","status":"published","published":"2026-03-31T00:45:50.416Z","modified":"2026-10-28T02:30:59.843733141Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:45:00.861953Z"},{"id":"GHSA-jmq3-x8q7-j9qm","title":"baserCMS has a cross-site scripting vulnerability in blog posts","description":"baserCMS has a cross-site scripting vulnerability in blog posts.\n\n### Target\nbaserCMS 5.2.1 and earlier versions\n\n### Vulnerability\n\nMalicious Javascript may be executed in blog posts.\n\n### Countermeasures\nUpdate to the latest version of baserCMS\n\nPlease refer to the following page to reference for more information.\nhttps://basercms.net/security/JVN_20837860\n\n### Credits\n\nGai Tanaka@Mitsui Bussan Secure Directions, Inc.","status":"published","published":"2026-03-31T22:43:10Z","modified":"2026-09-10T03:50:39.812591819Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:50.687609Z"}]}}