CVE-2023-54391
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2023
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Proxmox VE 7.0-8.0 Authentication Bypass via tfa-challenge Parameter
Proxmox Virtual Environment (VE) 7.0 through 8.0 contains an authentication bypass vulnerability in libpve-access-control before 8.0.4 that allows unauthenticated attackers to authenticate as any existing enabled user without a configured second factor by supplying an arbitrary tfa-challenge value in the API login endpoint. Attackers can send a POST request to the access ticket API endpoint with any value in the tfa-challenge parameter to completely skip password verification, gaining unauthorized access including to the root@pam account. All affected releases are end of life.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Proxmox Virtual Environment (VE)
- Vendor
- Proxmox Server Solutions GmbH
- Product
- Proxmox Virtual Environment (VE)
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 7.0 | affected | custom | Unavailable | 7.4 | None listed |
| 8.0 | affected | custom | Unavailable | Unavailable | None listed |