Showdoc CSRF Vulnerability

published 2018-11-28 7y ago modified 2026-06-17 4mo ago also GHSA-3p87-gqw8-4pf2 , EUVD-2022-2221

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 39%
public exploits: 0; none known

server/index.php?s=/api/teamMember/save in ShowDoc 2.4.2 has a CSRF that can add members to a team.

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Exploit prediction

0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

github.com https://github.com/CCCCCrash/POCs/tree/master/Web/showdoc/csrf referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	showdoc/showdoc	<=2.4.2	no fix listed

Classification

Weakness

CWE-352 Cross-Site Request Forgery

References

github.com /CCCCCrash/POCs/tree/master/Web/showdoc/csrf
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-19621
advisory
github.com /star7th/showdoc
package

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.