What’s Vulnerable › Vulnerabilities

CVE-2026-45719: Budibase: CouchDB Reduce Injection via Unsanitized Calculation Parameter in V1 Views API

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-27 · updated 2026-06-17
• Weakness: CWE-94

Description

Budibase is an open-source low-code platform. Prior to 3.38.1, the V1 Views API (POST /api/views) accepts a calculation parameter from the request body that is interpolated directly into a CouchDB reduce function definition without validation. Although an internal SCHEMA_MAP object defines the valid calculation types (sum, count, stats), no actual validation is performed against this map before the value is used in string interpolation. A user with Builder permissions can inject arbitrary JavaScript code that will be executed within the CouchDB JavaScript engine when the view is queried. This vulnerability is fixed in 3.38.1.

Affected products

• budibase: before 3.38.1

References

• https://github.com/Budibase/budibase/releases/tag/3.38.1
• https://github.com/Budibase/budibase/security/advisories/GHSA-363w-hvwh-w7m6
• https://github.com/Budibase/budibase/security/advisories/GHSA-363w-hvwh-w7m6

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