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TI-2022-16050 Aliases CVE-2022-35508GHSA-jfjw-xc26-6xpm

Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) are vulnerable to SSRF…

Priority HIGH 82CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) are vulnerable to SSRF when proxying HTTP requests between pve(pmg)proxy and pve(pmg)daemon. An attacker with an unprivileged account can craft an HTTP request to achieve SSRF and file disclosure of any files on the server. Also, in Proxmox Mail Gateway, privilege escalation to the root@pam account is possible if the backup feature has ever been used, because backup files such as pmg-backup_YYYY_MM_DD_*.tgz have 0644 permissions and contain an authkey value. This is fixed in pve-http-server 4.1-3.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01242 69th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:proxmox:proxmox_mail_gateway:-:*:*:*:*:*:*:*not specified by NVDVulnerableProxmox
cpe:2.3:a:proxmox:pve_http_server:*:*:*:*:*:*:*:*before 4.1-3VulnerableProxmox
cpe:2.3:a:proxmox:virtual_environment:-:*:*:*:*:*:*:*not specified by NVDVulnerableProxmox
  • cpe:2.3:a:proxmox:proxmox_mail_gateway:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Proxmox
  • cpe:2.3:a:proxmox:pve_http_server:*:*:*:*:*:*:*:* Versions before 4.1-3 Vulnerable ·Proxmox
  • cpe:2.3:a:proxmox:virtual_environment:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Proxmox

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-35508
  2. 2026-10-03 Alias added: GHSA-jfjw-xc26-6xpm

References

Exploit 1

Other 3

  • TI-2022-16049 A response-header CRLF injection vulnerability in the Proxmox Virtual Environment (PVE)… CVSS 3.1HIGH 7.1
  • TI-2023-23190 An issue in Proxmox Server Solutions GmbH Proxmox VE v.5.4 thru v.8.0, Proxmox Backup… CVSS 3.1HIGH 8.8
  • TI-2015-07469 Open redirect vulnerability in Proxmox Mail Gateway prior to hotfix 4.0-8-097d26a9 allows… CVSS 3.0MEDIUM 6.1
  • TI-2015-07468 Multiple cross-site scripting (XSS) vulnerabilities in Proxmox Mail Gateway prior to… CVSS 3.0MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences