What is CVE-2026-31350?

CVE-2026-31350 is a medium-severity vulnerability in Feehi Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-06.

How severe is CVE-2026-31350?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Feehi Cms

CVE-2026-31350

An authenticated stored cross-site scripting (XSS) vulnerability in Feehi CMS v2.1.1 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Page Sign parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-04-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (12.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

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

Affected products

Feehi Cms — versions 2.1.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/liufee/cms (Product)
github.com/liufee/cms/issues/82 (Exploit, Mitigation, Issue Tracking)

Frequently asked questions

What is CVE-2026-31350?: CVE-2026-31350 is a medium-severity vulnerability in Feehi Cms, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-06.
How severe is CVE-2026-31350?: Medium severity. CVSS v3 base score is 5.4 out of 10.