# Authlib: is_secure_transport() loopback exemption can be bypassed with a userinfo component, allowing cleartext-HTTP URLs to non-loopback hosts

Advisory record · `GHSA-jj7h-c3hg-m23x`

- **Identifiers:** `GHSA-jj7h-c3hg-m23x` · `CVE-2026-114614` · `PYSEC-2026-4354`
- **State:** Confirmed
- **Severity:** CVSS 2.6 Low
- **Critical:** No
- **Weakness (CWE):** [CWE-319](https://cwe.mitre.org/data/definitions/319.html) · [CWE-601](https://cwe.mitre.org/data/definitions/601.html) · [CWE-693](https://cwe.mitre.org/data/definitions/693.html)
- **Tags:** [Weak cryptography or TLS](https://agentprime.io/advisories/tag/weak-crypto.md) · [Open redirect](https://agentprime.io/advisories/tag/open-redirect.md) · [CWE-693](https://agentprime.io/advisories/tag/cwe-693.md)
- **Published:** 27 Oct 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the GitHub Advisory Database at 27 Oct 2026, 15:37 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

## Affected packages

- `authlib` (PyPI): affected `<1.8.0`; fixed in `1.8.0`

## 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

- 2.6 Low, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N`, from CNA (GitHub_M)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0027, the 19th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

- 31 Oct 2026, 14:07 UTC: First seen by agentprime
- 31 Oct 2026, 14:07 UTC: [Confirmed by OSV](https://osv.dev/vulnerability/GHSA-jj7h-c3hg-m23x)

## Sources

- [GitHub Advisory Database: GHSA-jj7h-c3hg-m23x](https://github.com/advisories/GHSA-jj7h-c3hg-m23x)
- [OSV: GHSA-jj7h-c3hg-m23x](https://osv.dev/vulnerability/GHSA-jj7h-c3hg-m23x)
- <https://github.com/authlib/authlib/security/advisories/GHSA-jj7h-c3hg-m23x>
- <https://nvd.nist.gov/vuln/detail/CVE-2026-114614>
- <https://github.com/authlib/authlib/commit/95ad1f90acf0c7b9cf2a8f25e6eb3f1135b8dc70>
- <https://github.com/authlib/authlib>
- <https://github.com/authlib/authlib/releases/tag/v1.8.0>

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-jj7h-c3hg-m23x>, 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-jj7h-c3hg-m23x/>. Everything for agents: <https://agentprime.io/llms.txt>.