# @budibase/backend-core (npm) vulnerabilities

6 known vulnerabilities (2 critical, 2 high, 2 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 3.50.0 (Oct 19, 2026): no advisory affects it
- Newest unaffected release: 3.50.0 (Oct 19, 2026), the latest release
- Weekly downloads: 9,760
- Dependents: 6
- Releases: 500+ since 2.23.2 (Apr 11, 2024)
- Registry: https://www.npmjs.com/package/@budibase/backend-core
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-54353: 2.23.2 to 3.38.5 (3.39.15 is outside it)
- CVE-2026-48147: 2.23.2 to 3.35.3 (3.35.10 is outside it)
- CVE-2026-46424: 2.23.2 to 3.38.1 (3.38.2 is outside it)
- CVE-2026-42239: 2.23.2 to 3.35.3 (3.35.10 is outside it)
- CVE-2026-41428: 2.23.2 to 3.35.3 (3.35.10 is outside it)
- CVE-2026-31818: 2.23.2 to 3.33.3 (3.33.4 is outside it)

Older releases aren't stored, so the earliest spans may start sooner.

## Advisories (6)

### [CVE-2026-54353](https://cve.now/CVE-2026-54353): Budibase: Potential SSRF DNS rebinding bypass in outbound fetch validation

- Severity: High 8.5
- Published: Jun 26, 2026
- Affected: fixed in 3.39.9.
- Fixed in 3.39.15 (released Jun 15, 2026, 11 days before disclosure, the advisory names 3.39.9, which was never published).
- The latest release, 3.50.0, is not affected.
- 93% of @budibase/backend-core downloads last week were affected versions (5.5K).

### [CVE-2026-48147](https://cve.now/CVE-2026-48147): Budibase: Unanchored Regex in \`matchers.ts\` Allows CSRF Bypass via Query String Injection in Budibase Worker

- Severity: Medium 6.5
- Published: May 27, 2026
- Affected: fixed in 3.35.4.
- Fixed in 3.35.10 (released Apr 21, 2026, 36 days before disclosure, the advisory names 3.35.4, which was never published).
- The latest release, 3.50.0, is not affected.
- 92% of @budibase/backend-core downloads last week were affected versions (5.5K).

### [CVE-2026-46424](https://cve.now/CVE-2026-46424): Budibase: Missing Cache Invalidation on Public API Role Unassignment Allows Revoked Users to Retain Privileges for Up to 1 Hour

- Severity: Medium 4.2
- Published: May 27, 2026
- Affected: fixed in 3.38.2.
- Fixed in 3.38.2 (released May 13, 2026, 14 days before disclosure).
- The latest release, 3.50.0, is not affected.
- 93% of @budibase/backend-core downloads last week were affected versions (5.5K).

### [CVE-2026-42239](https://cve.now/CVE-2026-42239): Budibase auth session cookies are set with httpOnly:false — any XSS can lead to full account takeover

- Severity: High 8.1
- Published: May 7, 2026
- Affected: fixed in 3.35.10.
- Fixed in 3.35.10 (released Apr 21, 2026, 16 days before disclosure).
- The latest release, 3.50.0, is not affected.
- 92% of @budibase/backend-core downloads last week were affected versions (5.5K).

### [CVE-2026-41428](https://cve.now/CVE-2026-41428): Budibase: Authentication Bypass via Unanchored Regex in Public Endpoint Matcher — Unauthenticated Access to Protected Endpoints

- Severity: Critical 9.1
- Published: Apr 24, 2026
- Affected: through 3.35.3.
- Fixed in 3.35.10 (released Apr 21, 2026, 3 days before disclosure), the first release outside every affected range (no listed fixed version clears them all).
- The latest release, 3.50.0, is not affected.
- 92% of @budibase/backend-core downloads last week were affected versions (5.5K).

### [CVE-2026-31818](https://cve.now/CVE-2026-31818): Budibase: Server-Side Request Forgery via REST Connector with Empty Default Blacklist

- Severity: Critical 9.6
- Published: Apr 3, 2026
- Affected: fixed in 3.33.4.
- Fixed in 3.33.4 (released Mar 13, 2026, 21 days before disclosure).
- The latest release, 3.50.0, is not affected.
- 91% of @budibase/backend-core downloads last week were affected versions (5.4K).

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