PT-2026-60559 · Activepieces · Activepieces

CVE-2026-53536 · Published 2026-07-16 · Updated 2026-07-16

Mitre

CVSS v4.0

5.3

Medium

Base vector

AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Activepieces is an open source AI workflow automation platform. Prior to 0.83.0, the /v1/step-files/signed download endpoint verified the supplied JWT against the shared signing secret but did not check the token's audience, and combined with a missing null-check on the decoded fileId, this allowed any caller holding any valid Activepieces JWT (including a freshly created user's own access token) to receive a step-file belonging to another tenant. The file returned was whatever PostgreSQL happened to scan first for type = FLOW STEP FILE, varying over time as the database changed, so an authenticated user could obtain step-file attachments belonging to other tenants on the same instance; the attacker could not target a specific victim or file, and the access was read-only with no integrity or availability impact. This issue is fixed in version 0.83.0.

Fix

IDOR

Insufficient Verification of Data Authenticity

Weakness Enumeration

CWE-639

CWE-345

Related Identifiers

CVE-2026-53536

Affected Products

Activepieces

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-53536 · Security Note
• https://github.com/activepieces/activepieces/security/advisories/GHSA-9723-fmff-mc24 · Note
• https://github.com/activepieces/activepieces/releases/tag/0.83.0 · Note
• https://github.com/activepieces/activepieces/commit/2cb6148010a6c2a22900f4c8b08d75cc5c921d1c · Note
• https://github.com/activepieces/activepieces/commit/afe852f60e39fcc6273d41e11f0765586b5a0e49 · Note