Stored Cross-Site Scripting Flaw in Budibase Low-Code Platform
CVE-2026-48149

8.1HIGH

Key Information:

Vendor

Budibase

Status
Budibase
Vendor
CVE Published:
27 May 2026

What is CVE-2026-48149?

Budibase, an open-source low-code platform, contains a vulnerability that allows stored cross-site scripting (XSS) attacks due to improper rendering of markdown content. In versions prior to 3.39.0, the Text component generates HTML content directly from markdown input without applying any sanitization processes. This oversight enables any user with write access on an underlying database table to store malicious scripts, potentially compromising the integrity of the application and its users. The issue has been addressed in version 3.39.0, where proper sanitization measures have been implemented to mitigate the risk of such attacks.

Affected Version(s)

budibase < 3.39.0

References

https://github.com/Budibase/budibase/security/advisories/...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.