Session Expiration Vulnerability in QuantumNous new-api API Token Handler
CVE-2026-82909

5.3MEDIUM

Key Information:

Vendor

Quantumnous

Status
New-api
Vendor
CVE Published:
31 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-82909?

The new-api component of QuantumNous contains a vulnerability in its Revoked API Token Handler, allowing attackers to manipulate the system and cause session expiration. This issue arises from an unspecified functionality within the API usage token file, which can be exploited remotely. Affected users should upgrade to version 1.0.0-rc.17 to mitigate the risk, as a patch exists that addresses this vulnerability effectively.

Affected Version(s)

new-api 1.0.0-rc.0

new-api 1.0.0-rc.1

new-api 1.0.0-rc.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-82909 - Proof of Concept

References

https://vuldb.com/vuln/397289
vdb-entry
https://vuldb.com/vuln/397289/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-82909
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

yaowenxiao (VulDB User)
.