CVE-2018-19620: Showdoc/showdoc Showdoc Unauthenticated Access Vulnerability
MODERATECVE-2018-19620 is a MODERATE (CVSS 4.3) showdoc unauthenticated access vulnerability (CWE-425: Direct Request ('Forced Browsing')) affecting Showdoc/showdoc libraries in the Packagist ecosystem. The issue involves showdoc unauthenticated access. Remediation is available by upgrading affected packages to version 2.4.2.
CVE-2018-19620 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N).
How to Fix CVE-2018-19620
To remediate this vulnerability, upgrade all affected Showdoc/showdoc dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade showdoc/showdoc to 2.4.2Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for showdoc/showdocHow to Check if You Are Affected
To determine whether your application is affected by CVE-2018-19620, inspect your project dependencies for Showdoc/showdoc:
inspect dependencies for showdoc/showdocAnalyze the terminal output to locate any version of Showdoc/showdoc in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.4.2), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-425: Direct Request ('Forced Browsing'), where the web application does not adequately enforce appropriate authorization on all restricted urls, scripts, or files. In Showdoc/showdoc, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2018-19620 Affected Showdoc/showdoc Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
showdoc/showdoc
|
Packagist |
< 2.4.2
|
2.4.2
|
References
Frequently Asked Questions
What is CVE-2018-19620?
Which Showdoc/showdoc versions are affected?
What version fixes CVE-2018-19620?
Is showdoc/showdoc affected?
What is the CVSS score of CVE-2018-19620?
What CWE is associated with CVE-2018-19620?
How can I check Packagist dependencies for CVE-2018-19620?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-pfrc-5hhq-6hvr",
"modified" : "2025-05-06T23:22:08Z",
"published" : "2022-05-13T01:50:52Z",
"aliases" : [ "CVE-2018-19620" ],
"summary" : "Showdoc Unauthenticated Access",
"details" : "ShowDoc 2.4.1 allows remote attackers to edit other users' notes by navigating with a modified `page_id`.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Packagist",
"name" : "showdoc/showdoc"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2.4.2"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-19620"
}, {
"type" : "WEB",
"url" : "https://github.com/star7th/showdoc/issues/397"
}, {
"type" : "WEB",
"url" : "https://github.com/star7th/showdoc/commit/bcdb5e3519285bdf81e618b3c9b90d22bc49e13c"
}, {
"type" : "WEB",
"url" : "https://github.com/CCCCCrash/POCs/tree/master/Web/showdoc/IncorrectAccessControl#0x02-modify"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/star7th/showdoc"
}, {
"type" : "WEB",
"url" : "https://github.com/star7th/showdoc/commits/v2.4.2"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-425" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2023-07-24T20:42:30Z",
"nvd_published_at" : "2018-11-28T08:29:00Z"
}
}