---
id: CVE-2026-97736
title: tinyauth before 5.1.3 allows rule bypass by appending an allowed route string
summary: >-
  tinyauth before 5.1.3 allows rule bypass by appending an allowed route string.
  This is caused by an unanchored regular expression.
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-777
vendor: tinyauth
product: github.com/tinyauthapp/tinyauth
affected:
  - github.com/tinyauthapp/tinyauth < 5.1.3
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T04:17:50.977'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97736'
references:
  - url: >-
      https://github.com/tinyauthapp/tinyauth/security/advisories/GHSA-r27r-rr9v-vv37
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-25T04:59:31.583Z'
---

## Overview

tinyauth before 5.1.3 allows rule bypass by appending an allowed route string. This is caused by an unanchored regular expression.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.