{"id":"CVE-2025-30158","aliases":["EUVD-2025-11864","GHSA-2prx-rgr7-hq5f"],"status":"published","title":"NamelessMC Forum iframe width/height abuse causing UI-based Denial of Service","description":"NamelessMC is a free, easy to use \u0026 powerful website software for Minecraft servers. In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes. This allows an authenticated attacker to perform a UI-based denial of service (DoS) by injecting oversized iframes that block the forum UI and disrupt normal user interactions. This issue has been patched in version 2.2.0.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00557,"percentile":0.46778,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2025-04-18T15:50:49Z","modified":"2026-10-28T02:30:42Z","products":[{"vendor":"namelessmc","product":"nameless"}],"references":[{"url":"https://github.com/NamelessMC/Nameless/security/advisories/GHSA-2prx-rgr7-hq5f","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","advisory"]},{"url":"https://github.com/NamelessMC/Nameless/commit/caa42a975338a13fbc1658e8c440108f16135643","tags":["x_refsource_MISC","Patch","fix"]},{"url":"https://github.com/NamelessMC/Nameless/releases/tag/v2.2.0","tags":["x_refsource_MISC","Release Notes","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30158.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30158","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-30158","title":"NamelessMC Forum iframe width/height abuse causing UI-based Denial of Service","description":"NamelessMC is a free, easy to use \u0026 powerful website software for Minecraft servers. In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes. This allows an authenticated attacker to perform a UI-based denial of service (DoS) by injecting oversized iframes that block the forum UI and disrupt normal user interactions. This issue has been patched in version 2.2.0.","status":"published","published":"2025-04-18T15:50:49.309Z","modified":"2025-04-18T16:04:53.74Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:32:35.742256Z"}],"euvd":[{"id":"EUVD-2025-11864","description":"NamelessMC is a free, easy to use \u0026 powerful website software for Minecraft servers. In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes. This allows an authenticated attacker to perform a UI-based denial of service (DoS) by injecting oversized iframes that block the forum UI and disrupt normal user interactions. This issue has been patched in version 2.2.0.","status":"published","published":"2025-04-18T15:50:49Z","modified":"2025-04-18T16:04:53Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:19.650141Z"}],"nvd":[{"id":"CVE-2025-30158","description":"NamelessMC is a free, easy to use \u0026 powerful website software for Minecraft servers. In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes. This allows an authenticated attacker to perform a UI-based denial of service (DoS) by injecting oversized iframes that block the forum UI and disrupt normal user interactions. This issue has been patched in version 2.2.0.","status":"published","published":"2025-04-18T16:15:22.443Z","modified":"2026-06-17T09:08:16.033Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:11:01.507281Z"}],"osv":[{"id":"CVE-2025-30158","title":"NamelessMC Forum iframe width/height abuse causing UI-based Denial of Service","description":"NamelessMC is a free, easy to use \u0026 powerful website software for Minecraft servers. In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes. This allows an authenticated attacker to perform a UI-based denial of service (DoS) by injecting oversized iframes that block the forum UI and disrupt normal user interactions. This issue has been patched in version 2.2.0.","status":"published","published":"2025-04-18T15:50:49.309Z","modified":"2026-10-28T02:30:42.84328603Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:47.708311Z"}]}}