CVE-2026-32774: Vulnogram Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-vggc-6pg2-xvp9
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CVSS 6.4
CWE-79
Published
Advisory Summary

CVE-2026-32774 is a MODERATE (CVSS 6.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Vulnogram libraries in the npm ecosystem. The issue involves vulnogram contains a stored cross-site scripting vulnerability in comment hypertext handling. Remediation is available in the latest vendor maintenance releases.

CVE-2026-32774 at a Glance

CVE Identifier CVE-2026-32774
GHSA Identifier GHSA-vggc-6pg2-xvp9
Severity MODERATE
CVSS v3.1 Base Score 6.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Vulnogram
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 6.4

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:N/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 None (UI:N)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-32774

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

vulnogram fixed: Latest secure release 
npm install vulnogram@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: 

npm ls vulnogram

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-32774, inspect your project dependencies using npm:

npm ls vulnogram

Analyze the terminal output to locate any version of Vulnogram 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: The npm ls vulnogram command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

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 Vulnogram, 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

Vulnogram 1.0.0 contains a stored cross-site scripting vulnerability in comment hypertext handling that allows attackers to inject malicious scripts. Remote attackers can inject XSS payloads through comments to execute arbitrary JavaScript in victims' browsers.

CVE-2026-32774 Affected Vulnogram Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
vulnogram
npm/vulnogram
npm
≤ 1.0.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/Vulnogram/Vulnogram/security/advisories/GHSA-pg4p-2985-gvxr
NVD — CVE-2026-32774 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-32774
Security Fix Commit FIX COMMIT
https://github.com/Vulnogram/Vulnogram/commit/2f0e21b113c58124084c7b74c9768fc241126a05
Vulnogram Source Repository REPOSITORY
https://github.com/Vulnogram/Vulnogram
www.vulncheck.com/advisories/vulnogra... WEB
https://www.vulncheck.com/advisories/vulnogram-stored-cross-site-scripting-via-comment-hypertext

Frequently Asked Questions

What is CVE-2026-32774?
CVE-2026-32774 is a security vulnerability in Vulnogram involving Vulnogram contains a stored cross-site scripting vulnerability in comment hypertext handling under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Vulnogram versions are affected?
Affected versions include releases prior to current release patches across affected packages: vulnogram.
What version fixes CVE-2026-32774?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is vulnogram affected?
Yes, vulnogram 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-2026-32774?
CVE-2026-32774 has a CVSS v3.1 base score of 6.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2026-32774?
CVE-2026-32774 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 npm dependencies for CVE-2026-32774?
Run the dependency tree command: 'npm ls vulnogram'. 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-vggc-6pg2-xvp9",
  "modified" : "2026-03-20T20:58:23Z",
  "published" : "2026-03-16T15:30:43Z",
  "aliases" : [ "CVE-2026-32774" ],
  "summary" : "Vulnogram contains a stored cross-site scripting vulnerability in comment hypertext handling",
  "details" : "Vulnogram 1.0.0 contains a stored cross-site scripting vulnerability in comment hypertext handling that allows attackers to inject malicious scripts. Remote attackers can inject XSS payloads through comments to execute arbitrary JavaScript in victims' browsers.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "vulnogram"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Vulnogram/Vulnogram/security/advisories/GHSA-pg4p-2985-gvxr"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-32774"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Vulnogram/Vulnogram/commit/2f0e21b113c58124084c7b74c9768fc241126a05"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Vulnogram/Vulnogram"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/vulnogram-stored-cross-site-scripting-via-comment-hypertext"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-20T20:58:23Z",
    "nvd_published_at" : "2026-03-16T14:19:44Z"
  }
}