# listmonk: CSRF to XSS Chain can Lead to Admin Account Takeover

Advisory record · `GHSA-rf24-wg77-gq7w`

- **Identifiers:** `GHSA-rf24-wg77-gq7w` · `CVE-2025-58430` · `GO-2025-3943`
- **State:** Confirmed
- **Severity:** CVSS 8.6 High
- **Critical:** No
- **Weakness (CWE):** [CWE-79](https://cwe.mitre.org/data/definitions/79.html) · [CWE-80](https://cwe.mitre.org/data/definitions/80.html) · [CWE-352](https://cwe.mitre.org/data/definitions/352.html)
- **Tags:** [Cross-site scripting (XSS)](https://agentprime.io/advisories/tag/xss.md) · [Cross-site request forgery (CSRF)](https://agentprime.io/advisories/tag/csrf.md)
- **Published:** 9 Sept 2025
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 9 Sept 2025, 20:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/knadh/listmonk` (Go): affected `<=1.1.0`; no fixed version yet

## Machine-written summary

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

> Listmonk versions up to and including 1.1.0 are affected. The backend does not validate the nonce value on requests, and the session cookie lacks a SameSite flag, so an attacker can lure a logged-in admin to a malicious page that makes cross-site requests and triggers script execution in the admin's browser, which can create a new admin account. The source gives few details on which browsers are affected. No fixed version is listed.

Written 1 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0014, the 3rd percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:14 UTC: First seen by agentprime
- 31 Oct 2026, 14:14 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-rf24-wg77-gq7w)

## Sources

- [GitHub Advisory Database: GHSA-rf24-wg77-gq7w](https://github.com/advisories/GHSA-rf24-wg77-gq7w)
- [OSV: GHSA-rf24-wg77-gq7w](https://osv.dev/vulnerability/GHSA-rf24-wg77-gq7w)
- <https://github.com/knadh/listmonk/security/advisories/GHSA-rf24-wg77-gq7w>
- <https://nvd.nist.gov/vuln/detail/CVE-2025-58430>
- <https://github.com/knadh/listmonk>

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-rf24-wg77-gq7w>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-rf24-wg77-gq7w/>. Everything for agents: <https://agentprime.io/llms.txt>.