---
id: CVE-2026-82470
title: >-
  Rodauth before 2.47.0 contains a time-based one-time password reuse
  vulnerability in the otp feature that fails to track the last accepted code
  timestamp
summary: >-
  Rodauth before 2.47.0 contains a time-based one-time password reuse
  vulnerability in the otp feature that fails to track the last accepted code
  timestamp. Attackers who observe a valid TOTP code can replay it during the
  drift window to b…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-294
published: '2026-08-29'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T18:26:53.610'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82470'
references:
  - url: 'https://github.com/jeremyevans/rodauth'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/jeremyevans/rodauth/commit/3bfd0a11bae70935b1944e71dbe787dd0c3a62ad
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/jeremyevans/rodauth/security/advisories/GHSA-hhvg-6qmv-58vc
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/rodauth-before-2.47.0-totp-code-reuse-via-drift-window
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00408
epssPercentile: 0.32321
ingestedAt: '2026-08-30T12:52:23.902Z'
---

## Overview

Rodauth before 2.47.0 contains a time-based one-time password reuse vulnerability in the otp feature that fails to track the last accepted code timestamp. Attackers who observe a valid TOTP code can replay it during the drift window to bypass the second authentication factor.

## Remediation

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