CVE-2026-31350: Feehi/cms Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-cgxr-v74v-g9mm
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2026-31350 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Feehi/cms libraries in the Packagist ecosystem. The issue involves feehi cms has an authenticated stored cross-site scripting (xss) vulnerability via the page sign parameter. Remediation is available in the latest vendor maintenance releases.

CVE-2026-31350 at a Glance

CVE Identifier CVE-2026-31350
GHSA Identifier GHSA-cgxr-v74v-g9mm
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Feehi/cms
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-31350

To remediate this vulnerability, upgrade all affected Feehi/cms dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

feehi/cms fixed: Latest secure release 
Upgrade feehi/cms to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for feehi/cms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-31350, inspect your project dependencies for Feehi/cms:

inspect dependencies for feehi/cms

Analyze the terminal output to locate any version of Feehi/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Feehi/cms, 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

An authenticated stored cross-site scripting (XSS) vulnerability in Feehi CMS v2.1.1 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Page Sign parameter.

CVE-2026-31350 Affected Feehi/cms Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
feehi/cms
 Packagist
2.1.1
All 1 versions
2.1.1
None specified

References

NVD — CVE-2026-31350 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31350
Feehi/cms Source Repository REPOSITORY
https://github.com/liufee/cms/issues/82
Feehi/cms Source Repository REPOSITORY
https://github.com/liufee/cms

Frequently Asked Questions

What is CVE-2026-31350?
CVE-2026-31350 is a security vulnerability in Feehi/cms involving Feehi CMS has an authenticated stored cross-site scripting (XSS) vulnerability via the Page Sign parameter under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Feehi/cms versions are affected?
Affected versions include releases prior to current release patches across affected packages: feehi/cms.
What version fixes CVE-2026-31350?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is feehi/cms affected?
Yes, feehi/cms is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-31350?
CVE-2026-31350 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2026-31350?
CVE-2026-31350 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2026-31350?
Run the dependency tree command: 'inspect dependencies for feehi/cms'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cgxr-v74v-g9mm",
  "modified" : "2026-04-08T00:13:47Z",
  "published" : "2026-04-06T18:33:07Z",
  "aliases" : [ "CVE-2026-31350" ],
  "summary" : "Feehi CMS has an authenticated stored cross-site scripting (XSS) vulnerability via the Page Sign parameter",
  "details" : "An authenticated stored cross-site scripting (XSS) vulnerability in Feehi CMS v2.1.1 allows attackers to execute arbitrary web scripts or HTML via injecting a crafted payload into the Page Sign parameter.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "feehi/cms"
    },
    "versions" : [ "2.1.1" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-31350"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/liufee/cms/issues/82"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/liufee/cms"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-08T00:13:47Z",
    "nvd_published_at" : "2026-04-06T16:16:32Z"
  }
}