# EC-CUBE Improper Restriction of Rendered UI Layers or Frames

Advisory record · `GHSA-rwh8-h525-4jvj`

- **Identifiers:** `GHSA-rwh8-h525-4jvj` · `CVE-2020-5679` · `PKSA-v9zg-hvb2-3g6s`
- **State:** Confirmed
- **Severity:** CVSS 6.1 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-1021](https://cwe.mitre.org/data/definitions/1021.html)
- **Tags:** [CWE-1021](https://agentprime.io/advisories/tag/cwe-1021.md)
- **Published:** 24 May 2022
- **Updated:** 25 Apr 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 24 May 2022, 17:35 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `ec-cube/ec-cube` (Packagist): affected `>=3.0.0, <=3.0.18`; no fixed version yet

## Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

> EC-CUBE versions 3.0.0 through 3.0.18 are vulnerable to clickjacking because rendered pages can be framed. An attacker can lure a user who is logged into the administrative page to a specially crafted page, causing unintended operations to be performed. No fix is listed.

Written 4 Nov 2026.

## Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

## Severity and exploitation

- 6.1 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.0066, the 51st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:30 UTC: First seen by agentprime
- 31 Oct 2026, 14:30 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-rwh8-h525-4jvj)

## Sources

- [GitHub Advisory Database: GHSA-rwh8-h525-4jvj](https://github.com/advisories/GHSA-rwh8-h525-4jvj)
- [OSV: GHSA-rwh8-h525-4jvj](https://osv.dev/vulnerability/GHSA-rwh8-h525-4jvj)
- <https://nvd.nist.gov/vuln/detail/CVE-2020-5679>
- <https://github.com/EC-CUBE/ec-cube>
- <https://jvn.jp/en/jp/JVN24457594/index.html>
- <https://www.ec-cube.net/info/weakness>

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.

## Check whether this affects you

A Match means an installed version is in the affected range above. Most don’t affect the app; agentprime hasn’t analysed this one yet.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), ask your agent to check the project: `check_lockfile` sends a lockfile, `check_packages` a list of installed packages, and both return the Matches and the upgrades that clear them. `get_advisory` returns this record. Setup: <https://agentprime.io/mcp.md>
- In a browser: <https://agentprime.io/check/> reads your lockfile in the browser, never uploading it.
- Whether it touches your code, with file and line: the Claude Code plugin, <https://agentprime.io/plugin.md>
- As JSON: <https://api.agentprime.io/v1/advisories/GHSA-rwh8-h525-4jvj>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

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The web page: <https://agentprime.io/advisories/GHSA-rwh8-h525-4jvj/>. Everything for agents: <https://agentprime.io/llms.txt>.