# CVE-2026-59805: Gumroad < 2026.07.06.2 - Insecure Direct Object Reference in PurchasesController

> Authenticated sellers can revoke or restore buyer access to other sellers' products due to missing ownership validation in the PurchasesController.

- **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:** 8 Jul 2026
- **Updated:** 8 Oct 2026
- **Also known as:** GHSA-4w48-6p23-843q

## What is CVE-2026-59805?

CVE-2026-59805 is a high-severity missing authorization vulnerability in antiwork gumroad, published on 8 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Gumroad before 2026.07.06.2 contains a broken access control vulnerability in the PurchasesController that allows authenticated sellers to manipulate purchase access for other sellers' products by sending PUT requests to the revoke_access and undo_revoke_access actions without seller ownership validation. Attackers can modify the is_access_revoked status on arbitrary purchases to unauthorized revoke or restore buyer access to products they do not own.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-59805?


## How do I fix CVE-2026-59805?

No fix has been published for CVE-2026-59805 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-59805 being exploited?

There is no known exploitation of CVE-2026-59805 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59805 and fix it if it is affected.

What it is: CVE-2026-59805 is a high-severity missing authorization vulnerability in antiwork gumroad, published on 8 Jul 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-2026-59805 in the wild and no public exploit code.

Affected product: antiwork gumroad. 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-2026-59805/ (Markdown: https://insights.sbomify.com/CVE-2026-59805/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59805
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59805
- OSV: https://osv.dev/vulnerability/CVE-2026-59805

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59805/
Summaries are generated and may contain mistakes; the official description above is the record.