What is CVE-2018-19620?

CVE-2018-19620 is a medium-severity vulnerability in Showdoc, classified under Direct Request (Forced Browsing). CVSS score: 4.3/10. Published 2018-11-28.

How severe is CVE-2018-19620?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Showdoc

CVE-2018-19620

ShowDoc 2.4.1 allows remote attackers to edit other users' notes by navigating with a modified page_id.

Published 2018-11-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.013 (68.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Showdoc — versions 2.4.1

Weakness classification (CWE)

CWE-425 — Direct Request (Forced Browsing)

References

github.com/CCCCCrash/POCs/tree/master/Web/showdoc/IncorrectAccessControl (Exploit, Third Party Advisory)
github.com/star7th/showdoc/issues/397 (Issue Tracking)
github.com/star7th/showdoc/commit/bcdb5e3519285bdf81e618b3c9b90d22bc49e13c (Patch)

Frequently asked questions

What is CVE-2018-19620?: CVE-2018-19620 is a medium-severity vulnerability in Showdoc, classified under Direct Request (Forced Browsing). CVSS score: 4.3/10. Published 2018-11-28.
How severe is CVE-2018-19620?: Medium severity. CVSS v3 base score is 4.3 out of 10.