BackendAI Missing Authentication for Critical Function
CVE-2025-49652 · GHSA-ww28-4m4v-cq4j · PYSEC-2026-290 · published 9 Jun 2025
How serious is it
- Severity: critical, CVSS score 9.8 out of 10.
- No exploit prediction (EPSS) score yet.
- Not on the CISA list of exploited vulnerabilities.
- No public exploit in Exploit-DB.
Is your app affected by CVE-2025-49652?
Paste this prompt into Claude Code, Cursor or any AI coding tool: it runs a free Shippable scan of your project and fixes what it finds. Built with Lovable, Bolt or v0? Scan your live app. Or upload your package file.
Who is affected
backend.ai(PyPI) < 25.15.6backend.ai(PyPI) >= 25.16.0rc1, < 25.19.0rc1
How to check
- Run
pip show backend.aiin your project to see the installed version, including copies pulled in by other packages. - Or paste your lockfile into the checker: it lists every package with a known vulnerability, this one included.
- Or run
npx shippable-dev scan localhost:3000in your project folder. It reads your lockfile and flags this vulnerability along with every other known one.
How to fix
Copies a prompt for Claude Code, Cursor or Codex: it checks your lockfiles for this and upgrades it.
- On < 25.15.6: Upgrade
backend.aito 25.15.6 or later, commit the lockfile and redeploy. - On >= 25.16.0rc1, < 25.19.0rc1: Upgrade
backend.aito 25.19.0rc1 or later, commit the lockfile and redeploy. - If a vulnerable version was live, check your logs and rotate the secrets that server could read.
The advisory
Missing Authentication in the registration feature of Lablup's BackendAI allows arbitrary users to create user accounts that can access private data even when registration is disabled.
Check your whole app
Dependencies are only half of it. Free and read-only: before you push, run npx shippable-dev scan localhost:3000 in your project folder, no account needed. For your live app, you prove it's yours with a one-line tag first.
References
- nvd.nist.gov/vuln/detail/CVE-2025-49652
- hiddenlayer.com/sai_security_advisor/2025-05-backendai-49653
- hiddenlayer.com/sai_security_advisor/2025-06-backendai
- github.com/lablup/backend.ai/commit/37fc8f70f9bad2dd01fe2e288f9006e96f9914ed
- github.com/lablup/backend.ai/commit/b6d3ddd9e285a7ce59722a37585b9298681eb82f
- github.com/lablup/backend.ai/commit/d7704f506e319acff205d91bfca6e2ca92939983
- github.com/pypa/advisory-database/tree/main/vulns/backend-ai/PYSEC-2026-290.yaml
- pypi.org/project/backend-ai
- github.com/advisories/GHSA-ww28-4m4v-cq4j
- github.com/lablup/backend.ai
Merged from GitHub Advisory Database, OSV. Last updated 28 Oct 2026. All vulnerabilities · RSS · JSON