# Liferay Portal: Missing Rate Limiting in GraphQL Endpoint Enables Resource Exhaustion Attack

Advisory record · `GHSA-f3hf-r62c-mfrj`

- **Identifiers:** `GHSA-f3hf-r62c-mfrj` · `CVE-2025-43796`
- **State:** Confirmed
- **Severity:** CVSS 7.1 High
- **Critical:** No
- **Weakness (CWE):** [CWE-400](https://cwe.mitre.org/data/definitions/400.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 12 Sept 2025
- **Updated:** 15 Sept 2025
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 12 Sept 2025, 21:32 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `com.liferay:com.liferay.portal.vulcan.api` (Maven): affected `>=8.0.2, <40.2.0`; fixed in `40.2.0`
- `com.liferay:com.liferay.portal.vulcan.impl` (Maven): affected `>=5.0.7, <5.0.105`; fixed in `5.0.105`

## Machine-written summary

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

> Liferay Portal's Vulcan API (com.liferay.portal.vulcan.api, versions 8.0.2 up to 40.2.0) and Vulcan implementation (com.liferay.portal.vulcan.impl, versions 5.0.7 up to 5.0.105) do not limit the number of objects returned by GraphQL queries. A remote attacker can run queries that return very large numbers of objects, causing denial of service. Upgrade com.liferay.portal.vulcan.api to 40.2.0 and com.liferay.portal.vulcan.impl to 5.0.105.

Written 7 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

- 7.1 High, CVSS 4.0: `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N`, from CNA (Liferay)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0038, the 32nd percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:10 UTC: First seen by agentprime
- 31 Oct 2026, 15:10 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-f3hf-r62c-mfrj)

## Sources

- [GitHub Advisory Database: GHSA-f3hf-r62c-mfrj](https://github.com/advisories/GHSA-f3hf-r62c-mfrj)
- [OSV: GHSA-f3hf-r62c-mfrj](https://osv.dev/vulnerability/GHSA-f3hf-r62c-mfrj)
- <https://nvd.nist.gov/vuln/detail/CVE-2025-43796>
- <https://github.com/liferay/liferay-portal/commit/2e4adf041e31f3474a14c29b7c135693f6529400>
- <https://github.com/liferay/liferay-portal/commit/2f74f23982fb03238f9b4ae145c33a9c1084f07e>
- <https://github.com/liferay/liferay-portal/commit/3780804b0d8f4f14bfca470a3e2e662bc6cef588>
- <https://github.com/liferay/liferay-portal/commit/8344aec3bebcd2ca409794523d5db5be6047c3dd>
- <https://github.com/liferay/liferay-portal/commit/83e77963499d4d3e7cc82cc48e63c992f6f29a6d>
- <https://github.com/liferay/liferay-portal/commit/8dda4adc0e9e7b6f82d4b3959592cad61640309b>
- <https://github.com/liferay/liferay-portal>
- <https://liferay.dev/portal/security/known-vulnerabilities/-/asset_publisher/jekt/content/CVE-2025-43796>
- <http://github.com/liferay/liferay-portal/commit/8f7eb98e05a5ea6961346ecc21fd73e4b46bba99>

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-f3hf-r62c-mfrj>, 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-f3hf-r62c-mfrj/>. Everything for agents: <https://agentprime.io/llms.txt>.