What is CVE-2018-16627?

CVE-2018-16627 is a medium-severity vulnerability in Getkirby Kirby, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.1/10. Published 2018-12-20.

How severe is CVE-2018-16627?

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

Is CVE-2018-16627 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Getkirby Kirby

CVE-2018-16627

panel/login in Kirby v2.5.12 allows Host header injection via the "forget password" feature.

Published 2018-12-20 · 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 (53.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.2% 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

Getkirby Kirby — versions 2.5.12

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Public proof-of-concept exploits

0xT11/CVE-POC

References

github.com/security-breachlock/CVE-2018-16627 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-16627?: CVE-2018-16627 is a medium-severity vulnerability in Getkirby Kirby, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.1/10. Published 2018-12-20.
How severe is CVE-2018-16627?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2018-16627 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.