CVEvulnerability
CVE-2026-54721
8.8 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-08-27
- Last modified
- 2026-09-09
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-94
Description
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.
Related
Weakness · CWE (1)
- CWE-94 Improper Control of Generation of Code weakness
References
- https://github.com/silverstripe/silverstripe-userforms/commit/23c069866900c19b499bfa997d1e251e97491702 github.com
- https://github.com/silverstripe/silverstripe-userforms/commit/c55494ad7c717b199a3c1663b43a54db5d95604c github.com
- https://github.com/silverstripe/silverstripe-userforms/pull/1441 github.com
- https://github.com/silverstripe/silverstripe-userforms/pull/1442 github.com
- https://github.com/silverstripe/silverstripe-userforms/releases/tag/6.4.9 github.com
- https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.0.7 github.com
- https://github.com/silverstripe/silverstripe-userforms/releases/tag/7.1.1 github.com
- https://github.com/silverstripe/silverstripe-userforms/security/advisories/GHSA-g8wr-r2v2-vqc6 github.com