# Contao Does Not Expire Tokens Correctly

Advisory record · `GHSA-j99g-qjvx-995g`

- **Identifiers:** `GHSA-j99g-qjvx-995g` · `CVE-2019-10643` · `PKSA-pnr9-2f76-g9z8` · `PKSA-ypgr-2z5b-9d8t`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **Weakness (CWE):** [CWE-287](https://cwe.mitre.org/data/definitions/287.html) · [CWE-324](https://cwe.mitre.org/data/definitions/324.html)
- **Tags:** [Authentication bypass](https://agentprime.io/advisories/tag/auth-bypass.md) · [CWE-324](https://agentprime.io/advisories/tag/cwe-324.md)
- **Published:** 13 May 2022
- **Updated:** 25 Apr 2024
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 13 May 2022, 01:07 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected packages

- `contao/contao` (Packagist): affected `>=4.7.0, <4.7.3`; fixed in `4.7.3`
- `contao/core-bundle` (Packagist): affected `>=4.7.0, <4.7.3`; fixed in `4.7.3`

## Machine-written summary

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

> Contao (contao/contao and contao/core-bundle) versions 4.7.0 through 4.7.2 are affected. Confirming an opt-in token does not invalidate previously issued opt-in tokens. The source gives few details about how an attacker would use this or what they could gain. Upgrade to version 4.7.3, which is listed as the fixed version.

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

- 9.8 Critical, CVSS 3.0: `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** 0.013, the 69th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:29 UTC: First seen by agentprime
- 31 Oct 2026, 14:29 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-j99g-qjvx-995g)

## Sources

- [GitHub Advisory Database: GHSA-j99g-qjvx-995g](https://github.com/advisories/GHSA-j99g-qjvx-995g)
- [OSV: GHSA-j99g-qjvx-995g](https://osv.dev/vulnerability/GHSA-j99g-qjvx-995g)
- <https://nvd.nist.gov/vuln/detail/CVE-2019-10643>
- <https://github.com/contao/contao/commit/70348cc812b110831ad66a4f9857883f75649b88>
- <https://contao.org/en/news.html>
- <https://contao.org/en/news/security-vulnerability-cve-2019-10643.html>
- <https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/contao/CVE-2019-10643.yaml>
- <https://github.com/FriendsOfPHP/security-advisories/blob/master/contao/core-bundle/CVE-2019-10643.yaml>

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-j99g-qjvx-995g>, 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-j99g-qjvx-995g/>. Everything for agents: <https://agentprime.io/llms.txt>.