What is CVE-2024-4456?

CVE-2024-4456 is a medium-severity vulnerability in Linux Kernel, classified under Cross-site Scripting. CVSS score: 4.1/10. Published 2024-05-08.

How severe is CVE-2024-4456?

Medium severity. CVSS v3 base score is 4.1 out of 10.

XSS in Linux Kernel

CVE-2024-4456

In affected versions of Octopus Server with certain access levels it was possible to embed a Cross-Site Scripting payload on the audit page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-05-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (15.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Linux Kernel
Microsoft Windows
Octopus Server
Octopus Deploy Server — versions 3.0, 2023.4.296, 2024.1.437

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

advisories.octopus.com/post/2024/sa2024-04/ (Vendor Advisory)

Frequently asked questions

What is CVE-2024-4456?: CVE-2024-4456 is a medium-severity vulnerability in Linux Kernel, classified under Cross-site Scripting. CVSS score: 4.1/10. Published 2024-05-08.
How severe is CVE-2024-4456?: Medium severity. CVSS v3 base score is 4.1 out of 10.