CVE-2026-54179
An authenticated administrator can therefore store arbitrary file content under an extensionless filename on the configured disk, which can cause stored cross-site scripting or other unintended behavior when the file is served and accessed.
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
Description
backpack/crud provides Create, Read, Update & Delete (CRUD) functions for Backpack, a collection of Laravel packages that help users build custom administration panels. From 6.0.0 until 6.8.14 and 7.0.37, the src/app/Library/Uploaders/SingleBase64Image.php methods SingleBase64Image::uploadFiles and SingleBase64Image::uploadRepeatableFiles, used by image fields through withFiles(), accept any data URI beginning with data:image without validating the declared MIME subtype or decoded bytes, while src/app/Library/Uploaders/Support/FileNameGenerator.php method FileNameGenerator::getExtensionFromFile applies mime_content_type() to the data URI instead of the decoded content. An authenticated administrator can therefore store arbitrary file content under an extensionless filename on the configured disk, which can cause stored cross-site scripting or other unintended behavior when the file is served and accessed. This issue is fixed in version 7.0.38 and 6.8.14.
- CVSS 3.1
- 4.4 MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79, CWE-434
- Source
- security-advisories@github.com
References
- https://github.com/Laravel-Backpack/CRUD/commit/18b3dc1c607775617f563c41bd1ddb983f11d751
- https://github.com/Laravel-Backpack/CRUD/pull/5989
- https://github.com/Laravel-Backpack/CRUD/releases/tag/6.8.14
- https://github.com/Laravel-Backpack/CRUD/releases/tag/7.0.38
- https://github.com/Laravel-Backpack/CRUD/security/advisories/GHSA-8hw4-7qjr-3wxg
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.