---
id: CVE-2026-51878
title: >-
  deeptutor 1.4.0 contains an authorization bypass through a user-controlled
  object identifier in TurnRuntimeManager.regenerate_last_turn
summary: >-
  deeptutor 1.4.0 contains an authorization bypass through a user-controlled
  object identifier in TurnRuntimeManager.regenerate_last_turn. A remote caller
  can enumerate or obtain a session_id and trigger regenerate on another user's
  session.
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-284
published: '2026-10-01'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T16:17:07.893'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-51878'
references:
  - url: 'https://gist.github.com/Ro1ME/8f6e32ba67d184e64e80f243c6625f3a'
    label: cve@mitre.org
  - url: 'https://github.com/HKUDS/DeepTutor/issues/515'
    label: cve@mitre.org
  - url: 'https://gist.github.com/Ro1ME/8f6e32ba67d184e64e80f243c6625f3a'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/HKUDS/DeepTutor/issues/515'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00214
epssPercentile: 0.11594
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T15:19:00.711746Z'
ingestedAt: '2026-10-01T23:03:32.773Z'
---

## Overview

deeptutor 1.4.0 contains an authorization bypass through a user-controlled object identifier in TurnRuntimeManager.regenerate_last_turn. A remote caller can enumerate or obtain a session_id and trigger regenerate on another user's session.

## Remediation

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