# Traefik: Gateway API TraefikService backend accepts rest@internal, allowing unauthorized exposure of the REST provider despite providers.rest.insecure=false

Advisory record · `GHSA-96qj-4jj5-wcjc`

- **Identifiers:** `GHSA-96qj-4jj5-wcjc` · `CVE-2026-44774` · `GO-2026-5277`
- **State:** Confirmed
- **Severity:** CVSS 6.4 Medium
- **Critical:** No
- **Weakness (CWE):** [CWE-15](https://cwe.mitre.org/data/definitions/15.html) · [CWE-284](https://cwe.mitre.org/data/definitions/284.html)
- **Tags:** [Broken access control](https://agentprime.io/advisories/tag/access-control.md) · [CWE-15](https://agentprime.io/advisories/tag/cwe-15.md)
- **Published:** 13 May 2026
- **Updated:** 25 Jun 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 13 May 2026, 15:29 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `github.com/traefik/traefik/v3` (Go): affected `>=3.7.0, <3.7.1 || <3.6.17`; fixed in `3.7.1`, `3.6.17`
- `github.com/traefik/traefik/v2` (Go): affected `<2.11.46`; fixed in `2.11.46`
- `github.com/traefik/traefik` (Go): affected `<=1.7.34`; 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0047, the 40th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 15:07 UTC: First seen by agentprime
- 31 Oct 2026, 15:07 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-96qj-4jj5-wcjc)

## Sources

- [GitHub Advisory Database: GHSA-96qj-4jj5-wcjc](https://github.com/advisories/GHSA-96qj-4jj5-wcjc)
- [OSV: GHSA-96qj-4jj5-wcjc](https://osv.dev/vulnerability/GHSA-96qj-4jj5-wcjc)
- <https://github.com/traefik/traefik/security/advisories/GHSA-96qj-4jj5-wcjc>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-44774>
- <https://github.com/traefik/traefik>
- <https://github.com/traefik/traefik/releases/tag/v2.11.46>
- <https://github.com/traefik/traefik/releases/tag/v3.6.17>
- <https://github.com/traefik/traefik/releases/tag/v3.7.1>

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-96qj-4jj5-wcjc>, 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-96qj-4jj5-wcjc/>. Everything for agents: <https://agentprime.io/llms.txt>.