CVE-2026-53535 Activepieces: Arbitrary file write in git-sync via path traversal and symlinks
An attacker with git-sync permissions can overwrite arbitrary files via path traversal and symlinks, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-53535?
CVE-2026-53535 is a medium-severity path traversal vulnerability in activepieces, published on 16 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Activepieces is an open source AI workflow automation platform. Prior to 0.82.0, the git-sync feature clones a user-configured Git repository into a temporary directory on the server and then writes flow, table, and connection state into it before pushing back, and two separate weaknesses allowed those writes to escape the intended workspace and land on arbitrary paths on the host filesystem: Git's symbolic-link handling was not disabled on the clone, so an attacker who controlled the remote repository could include symlinks that redirected the writes, and several user-supplied identifiers used to build on-disk paths (the repository slug and the externalId of tables, flows, and connections) were not validated against directory-traversal sequences such as ../. On a self-hosted Enterprise Edition deployment, a user authorized to configure or push to a git-sync repository (holding the WRITE_PROJECT_RELEASE permission) could cause the server to overwrite files anywhere the Activepieces process user can write, which depending on host layout can be leveraged for tampering, denial of service, or remote code execution. This issue is fixed in version 0.82.0.
Which versions are affected by CVE-2026-53535?
How do I fix CVE-2026-53535?
No fix has been published for CVE-2026-53535 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-53535 being exploited?
There is no known exploitation of CVE-2026-53535 in the wild and no public exploit code.
Sources
Also known as GHSA-qqcr-rg2x-97mm.