No exploitation reportedFix available

CVE-2018-19620

Q: Is CVE-2018-19620 actively exploited?

Active exploitation of CVE-2018-19620 has not been confirmed. Its EPSS score was 1.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2018-19620?

CVE-2018-19620 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

No exploitation reported by the sources we read.

Published2018-11-28
Fixed in2.4.2
WeaknessCWE-425

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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

Timeline

dates in UTC

2018-11-2808:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-19620?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-19620?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD

showdoc/showdoc

Branch	Affected	Fixed in	Source
2.4	< 2.4.2	2.4.2	OSV

Showdoc

Branch	Affected	Fixed in	Source
2.4	= 2.4.1	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update showdoc/showdoc to 2.4.2

Advisories and patches

github.comPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.04.3read 2026-10-23
NVDCVSS 2.04read 2026-10-23
NVDweakness (CWE)CWE-425read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Published: 2018-11-28
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-19620?

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

Is CVE-2018-19620 actively exploited?

Active exploitation of CVE-2018-19620 has not been confirmed. Its EPSS score was 1.3% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-19620?

CVE-2018-19620 has a CVSS v3 base score of 4.3 (MEDIUM severity), with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

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