What is CVE-2021-29009?

CVE-2021-29009 is a medium-severity vulnerability in Seopanel Seo Panel, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-03-25.

How severe is CVE-2021-29009?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Seopanel Seo Panel

CVE-2021-29009

A cross-site scripting (XSS) issue in SEO Panel 4.8.0 allows remote attackers to inject JavaScript via archive.php in the "type" parameter.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Seopanel Seo Panel — versions 4.8.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/seopanel/Seo-Panel/issues/210 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-29009?: CVE-2021-29009 is a medium-severity vulnerability in Seopanel Seo Panel, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2021-03-25.
How severe is CVE-2021-29009?: Medium severity. CVSS v3 base score is 4.8 out of 10.