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TI-2022-16049 Aliases CVE-2022-35507GHSA-xfgp-gpjw-wmqr

A response-header CRLF injection vulnerability in the Proxmox Virtual Environment (PVE)…

Priority MEDIUM 64CWE-74Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A response-header CRLF injection vulnerability in the Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) web interface allows a remote attacker to set cookies for a victim's browser that are longer than the server expects, causing a client-side DoS. This affects Chromium-based browsers because they allow injection of response headers with %0d. 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 0.01458 73rd 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
No
Technical impact
Partial

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-2022-35507
  2. 2026-10-03 Alias added: GHSA-xfgp-gpjw-wmqr

References

Exploit 1

Other 1

  • TI-2022-16050 Proxmox Virtual Environment (PVE) and Proxmox Mail Gateway (PMG) are vulnerable to SSRF… CVSS 3.1CRITICAL 9.8
  • 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