# CVE-2026-33879: FLIP doesn't have rate limiting or brute-force protection on login

> FLIP login lacks rate limiting, allowing attackers to perform brute-force and credential-stuffing attacks to compromise user accounts.

- **Severity:** Low 2.7 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Mar 2026
- **Updated:** 30 Mar 2026
- **Also known as:** GHSA-p34f-488j-5cwv

## What is CVE-2026-33879?

CVE-2026-33879 is a low-severity vulnerability in londonaicentre FLIP, published on 27 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Federated Learning and Interoperability Platform (FLIP) is an open-source platform for federated training and evaluation of medical imaging AI models across healthcare institutions. The FLIP login page in versions 0.1.1 and prior has no rate limiting or CAPTCHA, enabling brute-force and credential-stuffing attacks. FLIP users are external to the organization, increasing credential reuse risk. As of time of publication, it is unclear if a patch is available.

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2026-33879?

It affects 1 product.


Products: Aicentre Federated Learning and Interoperability Platform.

## How do I fix CVE-2026-33879?

No fix has been published for CVE-2026-33879 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33879 being exploited?

There is no known exploitation of CVE-2026-33879 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33879 and fix it if it is affected.

What it is: CVE-2026-33879 is a low-severity vulnerability in londonaicentre FLIP, published on 27 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-33879 in the wild and no public exploit code.

Affected product: londonaicentre FLIP. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-33879/ (Markdown: https://insights.sbomify.com/CVE-2026-33879/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33879
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33879
- OSV: https://osv.dev/vulnerability/CVE-2026-33879

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-33879/
Summaries are generated and may contain mistakes; the official description above is the record.