What is CVE-2017-12856?

CVE-2017-12856 is a medium-severity vulnerability in C.p.sub Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-08-29.

How severe is CVE-2017-12856?

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

XSS in C.p.sub Project

CVE-2017-12856

Cross-site scripting (XSS) vulnerability in C.P.Sub 5.2 allows remote attackers to inject arbitrary web script or HTML via the keyword parameter to index.php.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-08-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.2th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% 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

C.p.sub Project — versions 5.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/cooltey/C.P.Sub/issues/2 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2017-12856?: CVE-2017-12856 is a medium-severity vulnerability in C.p.sub Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-08-29.
How severe is CVE-2017-12856?: Medium severity. CVSS v3 base score is 6.1 out of 10.