# CVE-2026-73652: vantage6: Algorithm developer can edit another developer's algorithm that is pending / under review

> An algorithm developer can modify another developer's pending algorithm metadata, potentially swapping the image to bypass review security.

- **Severity:** High 7.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Aug 2026
- **Updated:** 13 Aug 2026
- **Also known as:** GHSA-47w6-gwp4-w6vc, PYSEC-2026-3703

## What is CVE-2026-73652?

CVE-2026-73652 is a high-severity missing authorization vulnerability in vantage6, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

vantage6 is an open-source infrastructure for privacy preserving analysis. In version 5.0.2 and earlier, the algorithm-store edit permission lacks an ownership check, allowing one algorithm developer to alter another developer's algorithm while it is pending or under review. The attacker can change metadata including the algorithm image or image tag, causing reviewers and nodes to trust a different image from the one originally submitted for approval. No fixed version is available as of this review.

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2026-73652?

3 open source packages ship an affected version, including vantage6.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `vantage6` | PyPI | All versions to 5.0.2 | None |
| `vantage6` | PyPI | All versions to 5.0.2 | None |
| `vantage6` | PyPI | All versions to 5.0.2 | None |

## How do I fix CVE-2026-73652?

No fix has been published for CVE-2026-73652 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-73652 being exploited?

There is no known exploitation of CVE-2026-73652 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-73652 and fix it if it is affected.

What it is: CVE-2026-73652 is a high-severity missing authorization vulnerability in vantage6, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-73652 in the wild and no public exploit code.

Affected packages and fixed versions:
- vantage6 (PyPI): affected all versions up to 5.0.2; no fix listed
- vantage6 (PyPI): affected all versions up to 5.0.2; no fix listed
- vantage6 (PyPI): affected all versions up to 5.0.2; no fix listed

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-2026-73652/ (Markdown: https://insights.sbomify.com/CVE-2026-73652/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-73652
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-73652
- OSV: https://osv.dev/vulnerability/CVE-2026-73652

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-73652/
Summaries are generated and may contain mistakes; the official description above is the record.