CVE-2022-35507

highpriority · track · 29EPSS 0.015 · 73 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.46% (73rd) EPSS

CVSS 7.1 · high

Is it mine?

4 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.3–7.1

v3.17.1highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 4.2

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · ENISA EU

v3.14.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondaryexploitability 2.8 · impact 1.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H/E:Fsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-74USprimary

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
proxmox proxmox mail gatewayall versionsnvdUScpe:2.3:a:proxmox:proxmox_mail_gateway:*:*:*:*:*:*:*:*
proxmox pve http server< 4.1-3nvdUScpe:2.3:a:proxmox:pve_http_server:*:*:*:*:*:*:*:*
proxmox virtual environmentall versionsnvdUScpe:2.3:a:proxmox:virtual_environment:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2022-12-04modified 2026-06-17

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+5984 more

references (8)

External citations — patches, advisories, analysis.

scry

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