Authorization Bypass Vulnerability in DeepTutor by HKUDS
CVE-2026-51878

4.3MEDIUM

Key Information:

Vendor

HKUDS

Status
DeepTutor
Vendor
CVE Published:
1 October 2026

What is CVE-2026-51878?

DeepTutor version 1.4.0 is susceptible to an authorization bypass vulnerability that allows a remote attacker to manipulate user-controlled object identifiers. This flaw exists in the TurnRuntimeManager.regenerate_last_turn method, enabling the attacker to enumerate active session IDs. As a result, unauthorized users can trigger the regeneration of sessions for other individuals, thereby compromising the integrity of user sessions and overall application security.

References

https://github.com/HKUDS/DeepTutor/issues/515
https://gist.github.com/Ro1ME/8f6e32ba67d184e64e80f243c66...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.