# Guzzle: Noncanonical host can bypass host-based checks

Advisory record · `GHSA-v5mv-p594-2x33`

- **Identifiers:** `GHSA-v5mv-p594-2x33` · `CVE-2026-69246` · `PKSA-gcrk-3vtt-1r14`
- **State:** Confirmed
- **Severity:** CVSS 7.2 High
- **Critical:** No
- **Weakness (CWE):** [CWE-180](https://cwe.mitre.org/data/definitions/180.html) · [CWE-436](https://cwe.mitre.org/data/definitions/436.html) · [CWE-918](https://cwe.mitre.org/data/definitions/918.html) · [CWE-941](https://cwe.mitre.org/data/definitions/941.html)
- **Tags:** [Server-side request forgery (SSRF)](https://agentprime.io/advisories/tag/ssrf.md) · [CWE-180](https://agentprime.io/advisories/tag/cwe-180.md) · [CWE-436](https://agentprime.io/advisories/tag/cwe-436.md) · [CWE-941](https://agentprime.io/advisories/tag/cwe-941.md)
- **Published:** 3 Aug 2026
- **Updated:** 10 Sept 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 3 Aug 2026, 21:07 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `guzzlehttp/guzzle` (Packagist): affected `<7.15.2 || >=8.0.0, <8.0.1`; fixed in `7.15.2`, `8.0.1`

## 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

- 7.2 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0037, the 31st percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 13:56 UTC: First seen by agentprime
- 31 Oct 2026, 13:56 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-v5mv-p594-2x33)

## Sources

- [GitHub Advisory Database: GHSA-v5mv-p594-2x33](https://github.com/advisories/GHSA-v5mv-p594-2x33)
- [OSV: GHSA-v5mv-p594-2x33](https://osv.dev/vulnerability/GHSA-v5mv-p594-2x33)
- <https://github.com/guzzle/guzzle/security/advisories/GHSA-v5mv-p594-2x33>
- <https://github.com/guzzle/guzzle/pull/3907>
- <https://github.com/guzzle/guzzle/pull/3908>
- <https://github.com/guzzle/guzzle/commit/3aeea0406aab88cbbd86531313d7cebf8ae149a4>
- <https://github.com/guzzle/guzzle/commit/744101956d78b7c1384d0cbf379db13e859167bf>
- <https://github.com/guzzle/guzzle>
- <https://github.com/guzzle/guzzle/releases/tag/7.15.2>
- <https://github.com/guzzle/guzzle/releases/tag/8.0.1>

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-v5mv-p594-2x33>, or `POST https://api.agentprime.io/v1/match` with your packages (<https://agentprime.io/api.md>)

---

The web page: <https://agentprime.io/advisories/GHSA-v5mv-p594-2x33/>. Everything for agents: <https://agentprime.io/llms.txt>.