CVE-2025-27100 is a medium-severity (CVSS 6.5) Uncontrolled Resource Consumption vulnerability in github.com/treeverse/lakefs. A fix is available for github.com/treeverse/lakefs — see the affected versions and patch details below.
An authenticated user can crash lakeFS by exhausting server memory
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2025-27100.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
github.com/treeverse/lakefsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
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 Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/treeverse/lakefs | all versions | 1.50.0go get github.com/treeverse/lakefs@v1.50.0 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/treeverse/lakefs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/treeverse/lakefs to 1.50.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-27100 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.
Frequently Asked Questions
Is CVE-2025-27100 in your dependencies?
Find it across Go, including transitive dependencies.