What is CVE-2018-17423?

CVE-2018-17423 is a medium-severity vulnerability in E107, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2019-06-19.

How severe is CVE-2018-17423?

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

XSS in E107

CVE-2018-17423

An issue was discovered in e107 v2.1.9. There is a XSS attack on e107_admin/comment.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (52.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

E107 — versions 2.1.9

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/e107inc/e107/issues/3414 (Third Party Advisory)
github.com/Kiss-sh0t/e107_v2.1.9_XSS_poc (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-17423?: CVE-2018-17423 is a medium-severity vulnerability in E107, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2019-06-19.
How severe is CVE-2018-17423?: Medium severity. CVSS v3 base score is 4.8 out of 10.