showdoc is vulnerable to Cross-Site Request Forgery (CSRF)

HIGH 8.8CVE-2021-4017 · GHSA-f77h-m9w2-vvg2 · Published 01/12/2021 · updated 17/06/2026

In short

CVE-2021-4017 is a HIGH (CVSS 8.8) vulnerability affecting showdoc/showdoc, showdoc (showdoc).
Chance of exploitation in the next 30 days (EPSS): 0.62%, higher than 49.5% of all vulnerabilities.
Fix: update to 2.9.13 or later.

Package	Affected versions	Patched versions
showdoc/showdoc Packagist	`< 2.9.13`	`2.9.13`
showdoc showdoc	`< 2.9.13`	`2.9.13`

NVD description

showdoc is vulnerable to Cross-Site Request Forgery (CSRF)

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Package

Affected versions

Patched versions

Packagist

< 2.9.13

2.9.13

< 2.9.13

2.9.13

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