XSS in Apache Software Foundation Skywalking

CVE-2026-85229

** UNSUPPORTED WHEN ASSIGNED ** Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Apache SkyWalking Booster UI. This issue affects Apache SkyWalking UI : from 10.2.0 through 10.4.0. Users are recommended to upgrade to Horizon UI 1.0.0, which fixes the issue.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

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: 0.003 (15.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-85229: held from 0.002 to 0.003.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-85229?
CVE-2026-85229 is a medium-severity vulnerability in Apache Software Foundation Skywalking, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-09-04.
How severe is CVE-2026-85229?
Medium severity. CVSS v3 base score is 6.1 out of 10.