# Duplicate Advisory: Nodemailer addressparser: O(n^2) on comment-joined addresses enables a remote DoS (reachable via mailparser)

Advisory record · `GHSA-vm5r-23w9-m8hx` · Withdrawn

- **Identifiers:** `GHSA-vm5r-23w9-m8hx`
- **State:** Withdrawn
- **Severity:** CVSS 7.5 High
- **Critical:** No
- **Weakness (CWE):** [CWE-407](https://cwe.mitre.org/data/definitions/407.html)
- **Tags:** [Denial of service](https://agentprime.io/advisories/tag/dos.md)
- **Published:** 13 Sept 2026
- **Updated:** 5 Oct 2026
- **Reviewed by a person:** No

**Withdrawn.** The GitHub Advisory Database withdrew this advisory on 5 Oct 2026. The record stays here, marked withdrawn.

Published by the GitHub Advisory Database at 13 Sept 2026, 12:31 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `nodemailer` (npm): affected `>=9.1.0, <=10.0.4`; no fixed version yet

## 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

- 7.5 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`, from GitHub Advisory Database

- **CISA KEV:** Not listed.
- **EPSS:** No score.

## Timeline

- 31 Oct 2026, 13:34 UTC: First seen by agentprime
- 31 Oct 2026, 13:34 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-vm5r-23w9-m8hx)

## Sources

- [GitHub Advisory Database: GHSA-vm5r-23w9-m8hx](https://github.com/advisories/GHSA-vm5r-23w9-m8hx)
- [OSV: GHSA-vm5r-23w9-m8hx](https://osv.dev/vulnerability/GHSA-vm5r-23w9-m8hx)
- <https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-90776>
- <https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89>
- <https://github.com/nodemailer/nodemailer>
- <https://github.com/nodemailer/nodemailer/blob/v10.0.4/src/addressparser/index.ts#L251>
- <https://github.com/nodemailer/nodemailer/releases/tag/v10.0.5>
- <https://www.vulncheck.com/advisories/nodemailer-9.1.0-through-10.0.4-denial-of-service-via-quadratic-address-parsing>

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-vm5r-23w9-m8hx>, 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-vm5r-23w9-m8hx/>. Everything for agents: <https://agentprime.io/llms.txt>.