# ApostropheCMS: Archive duplicate continuation lets contributors overwrite published content

Advisory record · `GHSA-jf5h-36mg-rp6x`

- **Identifiers:** `GHSA-jf5h-36mg-rp6x` · `CVE-2026-112956`
- **State:** Confirmed
- **Severity:** CVSS 6.5 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-863](https://cwe.mitre.org/data/definitions/863.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md)
- **Published:** 21 Oct 2026
- **Updated:** 21 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 21 Oct 2026, 16:59 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `@apostrophecms/import-export` (npm): affected `<3.7.1`; fixed in `3.7.1`

## Machine-written summary

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

> The @apostrophecms/import-export package is affected in versions before 3.7.1. According to the original report, a contributor on an import-enabled localized content type can replace published content through archive duplicate handling. The source gives few details, and its follow-up review did not reproduce the issue on 3.7.0. Upgrade to @apostrophecms/import-export 3.7.1, the listed fixed version.

Written 31 Oct 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

- 6.5 Medium, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0034, the 27th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 13:33 UTC: First seen by agentprime
- 31 Oct 2026, 13:33 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-jf5h-36mg-rp6x)

## Sources

- [GitHub Advisory Database: GHSA-jf5h-36mg-rp6x](https://github.com/advisories/GHSA-jf5h-36mg-rp6x)
- [OSV: GHSA-jf5h-36mg-rp6x](https://osv.dev/vulnerability/GHSA-jf5h-36mg-rp6x)
- <https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jf5h-36mg-rp6x>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-112956>
- <https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf498>
- <https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5ea>
- <https://github.com/apostrophecms/apostrophe>
- <https://github.com/apostrophecms/apostrophe/releases/tag/@apostrophecms/import-export@3.7.1>

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-jf5h-36mg-rp6x>, 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-jf5h-36mg-rp6x/>. Everything for agents: <https://agentprime.io/llms.txt>.