# CVE-2026-3460: Missing authorization in REST API TO MiniProgram

> Authenticated attackers can modify arbitrary users' store metadata via the REST API due to missing validation between openid and userid parameters.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Mar 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-xxxv-phx4-9pvx

## What is CVE-2026-3460?

CVE-2026-3460 is a medium-severity missing authorization vulnerability in xjb REST API TO MiniProgram, published on 21 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The REST API TO MiniProgram plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.1.2. This is due to the permission callback (update_user_wechatshop_info_permissions_check) only validating that the supplied 'openid' parameter corresponds to an existing WordPress user, while the callback function (update_user_wechatshop_info) uses a separate, attacker-controlled 'userid' parameter to determine which user's metadata gets modified, with no verification that the 'openid' and 'userid' belong to the same user. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify arbitrary users' store-related metadata (storeinfo, storeappid, storename) via the 'userid' REST API parameter.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-3460?


## How do I fix CVE-2026-3460?

No fix has been published for CVE-2026-3460 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3460 being exploited?

There is no known exploitation of CVE-2026-3460 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3460 and fix it if it is affected.

What it is: CVE-2026-3460 is a medium-severity missing authorization vulnerability in xjb REST API TO MiniProgram, published on 21 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-2026-3460 in the wild and no public exploit code.

Affected product: xjb REST API TO MiniProgram. 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-2026-3460/ (Markdown: https://insights.sbomify.com/CVE-2026-3460/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3460
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3460
- OSV: https://osv.dev/vulnerability/CVE-2026-3460

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-3460/
Summaries are generated and may contain mistakes; the official description above is the record.