What is CVE-2023-4451?

CVE-2023-4451 is a medium-severity vulnerability in Agentejo Cockpit, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-08-20.

How severe is CVE-2023-4451?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2023-4451 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Agentejo Cockpit

CVE-2023-4451

Cross-site Scripting (XSS) - Reflected in GitHub repository cockpit-hq/cockpit prior to 2.6.4.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-08-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.025 (84.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Agentejo Cockpit
Cockpit-Hq Cockpit-Hq/cockpit — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

huntr.dev/bounties/4e111c3e-6cf3-4b4c-b3c1-a540bf30f8fa (Exploit, Patch, Third Party Advisory)
github.com/cockpit-hq/cockpit/commit/30609466c817e39f9de1871559603e93cd4d0d0c (Patch)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-4451?: CVE-2023-4451 is a medium-severity vulnerability in Agentejo Cockpit, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-08-20.
How severe is CVE-2023-4451?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-4451 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.