CVE-2026-48499: Activepieces: Cross-tenant data exposure and code injection via the Code piece sandbox cache

Severity: critical (CVSS 9.3 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-30 · updated 2026-07-30
Weakness: CWE-200

Description

Activepieces is an open source AI workflow automation platform. Prior to 0.84.0, an unsanitized path segment in the Code piece sandbox can let an authenticated flow author reach read-write cached flow and code files belonging to other tenants on the same worker, exposing embedded data and allowing modified code to execute on a victim tenant's next flow run. This issue is fixed in version 0.84.0.

Affected products

activepieces: before 0.84.0

References

https://github.com/activepieces/activepieces/commit/9d8d328424bd32d295c5727af7550e1b57f9074d
https://github.com/activepieces/activepieces/releases/tag/0.84.0
https://github.com/activepieces/activepieces/security/advisories/GHSA-5h2x-g6m3-grmq

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