Showdoc Forced Browsing

published 2018-11-27 7 y ago modified 2026-06-17 4 mo ago also GHSA-6xx7-cphv-pxgr , EUVD-2022-2882

cvss: 6.5; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 68%
public exploits: 0; none known

ShowDoc 2.4.1 allows remote attackers to obtain sensitive information by navigating with a modified page_id, as demonstrated by reading note content, or discovering a username in the JSON data at a diff URL.

Exploit prediction

1.20% chance of exploitation in the next 30 days, higher than 68% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/CCCCCrash/POCs/tree/master/Web/showdoc/IncorrectAccessControl 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:L/UI:N/S:U/C:H/I:N/A:N
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:P/I:N/A:N
GitHub	3.0	6.5	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	showdoc/showdoc	<=2.4.1	no fix listed

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

github.com /CCCCCrash/POCs/tree/master/Web/showdoc/IncorrectAccessControl
web, exploit, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-19609
advisory
github.com /star7th/showdoc
package

Sources

Fencer Vulns 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.

Summary