Cyber Resilience

CVE-2026-48149

High

Published: 27 May 2026

Published
27 May 2026
Modified
28 May 2026
KEV Added
—
Patch
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CVSS Score v3.1 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0023 13.2th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-48149 is a high-severity Cross-site Scripting (CWE-79) vulnerability. Its CVSS base score is 8.1 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

Budibase is an open-source low-code platform. Prior to 3.39.0, the Budibase Text component renders markdown by assigning marked.parse(markdown) straight to innerHTML with no sanitizer (packages/bbui/src/Markdown/MarkdownViewer.svelte:22). Any column a builder binds to a Text component in Markdown mode is a stored-XSS…

more

sink writable by every BASIC app user with WRITE on the underlying table. This vulnerability is fixed in 3.39.0.

CWE(s)
CWE-79

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.007 JavaScript Execution
Adversaries may abuse various implementations of JavaScript for execution.
attack.mitre.org →
Why these techniques?

Stored XSS enables script injection/execution in web app context (T1190 for public-facing exploit, T1059.007 for JS interpreter abuse).

Confidence: MEDIUM · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-26907Shared CWE-79
CVE-2025-69084Shared CWE-79
CVE-2025-69048Shared CWE-79
CVE-2025-22567Shared CWE-79
CVE-2025-69324Shared CWE-79
CVE-2026-1841Shared CWE-79
CVE-2025-26588Shared CWE-79
CVE-2025-23850Shared CWE-79
CVE-2025-23643Shared CWE-79
CVE-2025-23616Shared CWE-79

Affected Assets

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-79

Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.

SI-10 Information Input Validation
addresses: CWE-79

Validates web inputs to reject script-related content that could produce XSS.

SI-15 Information Output Filtering
addresses: CWE-79

Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.

References