What is CVE-2009-4900?

CVE-2009-4900 is a medium-severity vulnerability in Pixelpost, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-10-28.

How severe is CVE-2009-4900?

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

XSS in Pixelpost

CVE-2009-4900

pixelpost 1.7.1 has XSS

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-10-28 · last modified 2026-06-16.

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: 0.010 (60.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Pixelpost — versions 1.7.1-5

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-tracker.debian.org/tracker/CVE-2009-4900 (Third Party Advisory, Issue Tracking)
access.redhat.com/security/cve/cve-2009-4900 (Third Party Advisory, Broken Link)
bugs.debian.org/cgi-bin/bugreport.cgi (vendor-advisory, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2009-4900?: CVE-2009-4900 is a medium-severity vulnerability in Pixelpost, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-10-28.
How severe is CVE-2009-4900?: Medium severity. CVSS v3 base score is 6.1 out of 10.