Vulnerability details
CVE-2026-48149
Budibase budibase
Budibase: Stored XSS in Text component: BASIC users execute JS in admin session via MarkdownViewer innerHTML + CDN+srcdoc CSP bypass
CVSS 3.1
8.1High
Official description
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 sink writable by every BASIC app user with WRITE on the underlying table. This vulnerability is fixed in 3.39.0.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.1High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Budibase | budibase | < 3.39.0 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://github.com/Budibase/budibase/security/advisories/GHSA-57p7-9h9w-xqpw x_refsource_CONFIRM
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Details
- Published
- 2026-05-27
- Last updated
- 2026-05-28
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.22%
Probability of exploitation in 30 days
13.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')