CVE-2022-35507

HIGH NUCLEI

Proxmox Virtual Environment and Proxmox Mail Gateway - Response Header Injection via CRLF

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2022-35507 has a Nuclei detection template available — see the Nuclei card below for the Shodan/FOFA recon queries.

Description

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.

Nuclei Templates (1)

Proxmox - CRLF Injection
HIGHVERIFIEDby DhiyaneshDk
Shodan: html:"Proxmox = {"

References (2)

Core 2

Scores

CVSS v3 7.1
EPSS 0.0138
EPSS Percentile 68.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-74
Status published
Products (3)
proxmox/proxmox_mail_gateway
proxmox/pve_http_server < 4.1-3
proxmox/virtual_environment
Published Dec 04, 2022
Tracked Since Feb 18, 2026