← Vulnerability feed

Vulnerability record · CVE-2026-54351 · published 26 June 2026

CVE-2026-54351: Budibase mass assignment vulnerability

Budibase · Budibase

Budibase is an open-source low-code platform. Prior to 3.39.9, the webhook trigger endpoint in Budibase is publicly accessible and passes the full HTTP request body into automation execution parameters. A mass assignment vulnerability in externalTrigger() allows an attacker to overwrite the internal appId property by including it in the webhook POST body. When the automation is processed asynchronously (the default path for webhooks without a collect step), the worker executes the attacker-defined automation in the context of the victim's workspace, granting full read/write access to the victim's database. This vulnerability is fixed in 3.39.9.

9.6 CVSS 3.1 Critical EPSS 0.46% · top 62.5% CWE-915 · Mass assignment
9.6CVSS 3.1 base score
0.46%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
30 Jun 2026Last modified by NVD

Description

Budibase is an open-source low-code platform. Prior to 3.39.9, the webhook trigger endpoint in Budibase is publicly accessible and passes the full HTTP request body into automation execution parameters. A mass assignment vulnerability in externalTrigger() allows an attacker to overwrite the internal appId property by including it in the webhook POST body. When the automation is processed asynchronously (the default path for webhooks without a collect step), the worker executes the attacker-defined automation in the context of the victim's workspace, granting full read/write access to the victim's database. This vulnerability is fixed in 3.39.9.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Budibase/budibase/security/advisories/GHSA-rgvg-3wpc-h44p ExploitMitigationVendor Advisory
https://github.com/Budibase/budibase/security/advisories/GHSA-rgvg-3wpc-h44p ExploitMitigationVendor Advisory

Track CVE-2026-54351 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.9CVE-2026-31818Budibase server-side request forgery (ssrf) vulnerabilityBudibase is an open-source low-code platform. Prior to version 3.33.4, a server-side request forgery (SSRF) vulnerability exists in Budibase's REST d…EPSS 0.43%9.8CVE-2026-54350Budibase sql injection vulnerabilityBudibase is an open-source low-code platform. Prior to 3.39.12, an unauthenticated visitor of any published Budibase app reads every document of the …EPSS 0.54%9.6CVE-2026-54352Budibase path traversal vulnerabilityBudibase is an open-source low-code platform. Prior to 3.39.9, `POST /api/pwa/process-zip` at packages/server/src/api/routes/static.ts:24 accepts a b…EPSS 0.49%9.1CVE-2026-41428Budibase improper authentication vulnerabilityBudibase is an open-source low-code platform. Prior to 3.35.4, the authenticated middleware uses unanchored regular expressions to match public (no-a…EPSS 0.63%9.1CVE-2026-31816Budibase injection vulnerabilityBudibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.31.4 and earlier, the Budibase server's authorized() m…EPSS 2.2%9.0CVE-2026-35216Budibase os command injection vulnerabilityBudibase is an open-source low-code platform. Prior to version 3.33.4, an unauthenticated attacker can achieve Remote Code Execution (RCE) on the Bud…EPSS 1.2%9.0CVE-2026-25737Budibase cross-site scripting vulnerabilityBudibase is a low code platform for creating internal tools, workflows, and admin panels. In 3.24.0 and earlier, an arbitrary file upload vulnerabili…EPSS 0.38%9.0CVE-2026-27702Budibase improper input validation vulnerabilityBudibase is a low code platform for creating internal tools, workflows, and admin panels. Prior to version 3.30.4, an unsafe `eval()` vulnerability i…EPSS 0.56%

Source: NIST National Vulnerability Database (record CVE-2026-54351), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.