Deploy autonomous AI agents that reason, exploit, and validate complex vulnerability chains — not another scanner, an agentic system that thinks like a senior pentester.
CVE-2026-3089 is a low severity vulnerability with a CVSS score of 0.0. No known exploits currently, and patches are available.
Please cite this page when referencing data from Strobes VI. Proper attribution helps support our vulnerability intelligence research.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
Actual Sync Server allows authenticated users to upload files through POST /sync/upload-user-file. In versions prior to 26.3.0, improper validation of the user-controlled x-actual-file-id header means that traversal segments (../) can escape the intended directory and write files outside userFiles.
The vulnerability can be mitigated in prior versions by running the sync server in a filesystem sandbox.