CVE-2026-54351 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-54351CRITICAL

Budibase: Mass Assignment in Webhook Trigger Allows Cross-Workspace Automation Execution via appId Override

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  C  H  H  N    9.6   .0033   26.4     —

AFFECTED
  Product   Versions    Fixed
  budibase  < 3.39.9 –  —

TIMELINE
  Jun 12  Reserved by GitHub_M
  Jun 26  EXPLOIT PUBLISHED — CVE-2026-54351 (budibase). Public exploit reference added.
  Jun 26  Published (CNA: GitHub_M)

CWE-915 · CNA: GitHub_M · CVSS v3.1 · 1 reference · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 12, 2026	Reserved	Reserved by GitHub_M
June 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-54351 (budibase). Public exploit reference added.
June 26, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Budibase	budibase	—	< 3.39.9	—

Weaknesses

CWE-915

References (1)

https://github.com/Budibase/budibase/security/advisories/GHSA-rgvg-3wpc-h44p [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-54351 at cve.org

Vendors: budibase

Weaknesses: CWE-915

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54351 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.