# CVE-2026-35488: Tandoor Recipes — CustomIsShared permits DELETE/PUT on RecipeBook by shared (read-only) users

> Shared users with read-only access can delete or modify RecipeBooks due to missing method checks in permission logic.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`)
- **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:** 7 Apr 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-xvmf-cfrq-4j8f

## What is CVE-2026-35488?

CVE-2026-35488 is a high-severity missing authorization vulnerability in TandoorRecipes recipes, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.4, RecipeBookViewSet and RecipeBookEntryViewSet use CustomIsShared as an alternative permission class, but CustomIsShared.has_object_permission() returns True for all HTTP methods — including DELETE, PUT, and PATCH — without checking request.method in SAFE_METHODS. Any user who is in the shared list of a RecipeBook can delete or overwrite it, even though shared access is semantically read-only. This vulnerability is fixed in 2.6.4.

Weakness: CWE-749 (Exposed Dangerous Method or Function)

## Which versions are affected by CVE-2026-35488?

It affects 1 product.


Products: Tandoor Recipes.

## How do I fix CVE-2026-35488?

No fix has been published for CVE-2026-35488 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-35488 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35488 exists.

## Other vulnerabilities in TandoorRecipes recipes

- [CVE-2025-23211](https://insights.sbomify.com/CVE-2025-23211/): Tandoor Recipes - SSTI - Remote Code Execution (critical 10.0)
- [CVE-2026-33152](https://insights.sbomify.com/CVE-2026-33152/): Tandoor Recipes Vulnerable to Unrestricted Brute-Force via BasicAuthentication (critical 9.1)
- [CVE-2025-23213](https://insights.sbomify.com/CVE-2025-23213/): Tandoor Recipes - Stored XSS through Unrestricted File Upload (high 8.7)
- [CVE-2026-35045](https://insights.sbomify.com/CVE-2026-35045/): Tandoor Recipes Affected by Private Recipe Exposure and Unauthorized Modification (high 8.1)
- [CVE-2026-33149](https://insights.sbomify.com/CVE-2026-33149/): Tandoor Recipes Vulnerable to Host Header Injection (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-35488 and fix it if it is affected.

What it is: CVE-2026-35488 is a high-severity missing authorization vulnerability in TandoorRecipes recipes, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35488 exists.

Affected product: TandoorRecipes recipes. 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-2026-35488/ (Markdown: https://insights.sbomify.com/CVE-2026-35488/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-35488
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-35488
- OSV: https://osv.dev/vulnerability/CVE-2026-35488

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-35488/
Summaries are generated and may contain mistakes; the official description above is the record.