Is CVE-2022-35507 in the CISA KEV catalog?

No. CVE-2022-35507 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-35507?

CVE-2022-35507 has a CVSS v3 base score of 7.1 (HIGH).

What is the EPSS score for CVE-2022-35507?

CVE-2022-35507 has an EPSS score of 1.38% (69th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-35507?

Upgrade pve http server to 4.1-3 or later.

CVE & CISA-KEV Catalog

CVE-2022-35507

HIGH

7.1

CVSS v3

NVD

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.

CWE-74Injection

How to fix

Remediation Available

pve http serverNVD

Affected:< 4.1-3Fixed in:4.1-3CVE-2022-35507derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Exploit Intelligence

1.38%probability of exploitation in 30 days

69thpercentile

Moderate risk: more likely to be exploited than 69% of all known CVEs.

References

Patch1

starlabs.sg

Other references1

git.proxmox.com

Related Vulnerabilities

Other CWE-74 (Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2013-2251	Critical	9.8	100%	KEV	Fix
CVE-2023-22527	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-2725	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-46169	Critical	9.8	100%	KEV	Fix
CVE-2022-35914	Critical	9.8	100%	KEV	-
CVE-2019-17558	High	7.5	99%	KEV	Fix

Embed a live status badge for CVE-2022-35507

Markdown

[![CVE-2022-35507](https://tridentstack.com/cve/badge/CVE-2022-35507.svg)](https://tridentstack.com/cve/CVE-2022-35507)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-35507"><img src="https://tridentstack.com/cve/badge/CVE-2022-35507.svg" alt="CVE-2022-35507"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-24.