CVE-2026-54721: fallo de gravedad alta en silverstripe-userforms
Silverstripe UserForms: Remote code execution via userforms email subject
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.8epss 0.7%
Silverstripe UserForms provides a visual form builder for the Silverstripe CMS. From 6.0.0 until 6.4.9, 7.0.7, and 7.1.1, the userform email recipient subject field in the CMS accepts a specially crafted payload that can be interpreted as executable server-side code. An authenticated CMS user with permission to configure a UserForms email recipient can use the subject field to run arbitrary code on the server, compromising confidentiality, integrity, and availability. This issue is fixed in versions 6.4.9, 7.0.7, and 7.1.1.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
silverstripe · silverstripe-userformsReferencias
https://github.com/silverstripe/silverstripe-userforms/commit/23c069866900c19b499bfa997d1e251e97491702https://github.com/silverstripe/silverstripe-userforms/commit/c55494ad7c717b199a3c1663b43a54db5d95604chttps://github.com/silverstripe/silverstripe-userforms/pull/1441https://github.com/silverstripe/silverstripe-userforms/pull/1442https://github.com/silverstripe/silverstripe-userforms/releases/tag/6.4.9https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.0.7https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.1.1https://github.com/silverstripe/silverstripe-userforms/security/advisories/GHSA-g8wr-r2v2-vqc6