CVE-2025-27100: Treeverse Lakefs

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

lakeFS is an open-source tool that transforms your object storage into a Git-like repository. In affected versions an authenticated user can crash lakeFS by exhausting server memory. This is an authenticated denial-of-service issue. This problem has been patched in version 1.50.0. Users on versions 1.49.1 and below are affected. Users are advised to upgrade. Users unable to upgrade should either set the environment variable `LAKEFS_BLOCKSTORE_S3_DISABLE_PRE_SIGNED_MULTIPART` to `true` or configure the `disable_pre_signed_multipart` key to true in their config yaml.

Affected products

• Treeverse Lakefs: before 1.50.0 (fixed in 1.50.0)

Published 2025-02-21. Last modified 2026-06-17.