GHSA-92hr-gmr6-h8cp: Ep etherpad lite Etherpad Addressed Weak Token RNG, Vulnerability

MODERATE
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CWE-235 CWE-209 CWE-330 CWE-208 CWE-22
Published
Advisory Summary

GHSA-92hr-gmr6-h8cp is a MODERATE etherpad addressed weak token rng, vulnerability (CWE-235: Improper Handling of Extra Parameters) affecting Ep etherpad lite libraries in the npm ecosystem. The issue involves etherpad addressed weak token rng, login timing, plugin path handling, api request handling. Remediation is available by upgrading affected packages to version 3.3.0.

GHSA-92hr-gmr6-h8cp at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-92hr-gmr6-h8cp
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-235: Improper Handling of Extra Parameters
Affected Product Ep etherpad lite
Package Ecosystem npm
Published Date
Last Updated

How to Fix GHSA-92hr-gmr6-h8cp

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

ep_etherpad-lite fixed: 3.3.0 
npm install ep_etherpad-lite@3.3.0
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 ep_etherpad-lite

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-92hr-gmr6-h8cp, inspect your project dependencies using npm:

npm ls ep_etherpad-lite

Analyze the terminal output to locate any version of Ep etherpad lite in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.3.0), your application is affected.

Note: The npm ls ep_etherpad-lite 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-235: Improper Handling of Extra Parameters, where the product does not handle or incorrectly handles when the number of parameters, fields, or arguments with the same name exceeds the expected amount. In Ep etherpad lite, 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

Fix: PR #7906 (ether/etherpad). A set of medium/low hardening fixes: - **Weak RNG for tokens (CWE-330):** author/session/readonly IDs were generated with `Math.random()` (client and server). Now use `crypto.getRandomValues`. - **Login timing / no failure delay (CWE-208/CWE-307):** the OIDC interaction login used a non-constant-time password compare with no failure delay. Now uses `crypto.timingSafeEqual` plus a uniform failure delay; user lookup is own-property only. - **Plugin dependency path handling (CWE-22):** plugin dependency names from package.json were used to build filesystem paths without validation (admin-gated install). Now validated against the npm name grammar. - **API parameter pollution (CWE-235):** `/api/2` merged all request headers into the API field set. Now forwards only `authorization`, matching the openapi.ts handler. - **Pad-creation side effect:** `API.appendChatMessage` could create arbitrary pads (missing `getPadSafe`). Now requires the pad to exist. - **Error info disclosure (CWE-209):** the admin file server echoed filesystem error detail; now returns a generic message.

GHSA-92hr-gmr6-h8cp Affected Ep etherpad lite Versions

1 component(s)
Fixed Versions:
3.3.0
Product / Package Ecosystem Affected Versions Fixed Version
ep_etherpad-lite
npm/ep_etherpad-lite
npm
< 3.3.0
3.3.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ether/etherpad/security/advisories/GHSA-92hr-gmr6-h8cp
Ep etherpad lite Source Repository REPOSITORY
https://github.com/ether/etherpad/pull/7906
Security Fix Commit FIX COMMIT
https://github.com/ether/etherpad/commit/7ea99706483443239bbbc0f2df9aff8ab5de4805
Ep etherpad lite Source Repository REPOSITORY
https://github.com/ether/etherpad
Ep etherpad lite Release RELEASE
https://github.com/ether/etherpad/releases/tag/3.3.0

Frequently Asked Questions

What is GHSA-92hr-gmr6-h8cp?
GHSA-92hr-gmr6-h8cp is a security vulnerability in Ep etherpad lite involving Etherpad addressed weak token RNG, login timing, plugin path handling, API request handling under CWE-235: Improper Handling of Extra Parameters.
Which Ep etherpad lite versions are affected?
Affected versions include releases prior to 3.3.0 across affected packages: ep_etherpad-lite.
What version fixes GHSA-92hr-gmr6-h8cp?
Upgrading to 3.3.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ep_etherpad-lite affected?
Yes, ep_etherpad-lite is affected in releases prior to 3.3.0. Upgrade your dependency to 3.3.0 or later.
What CWE is associated with GHSA-92hr-gmr6-h8cp?
GHSA-92hr-gmr6-h8cp is classified under CWE-235: Improper Handling of Extra Parameters (The product does not handle or incorrectly handles when the number of parameters, fields, or arguments with the same name exceeds the expected amount.).
How can I check npm dependencies for GHSA-92hr-gmr6-h8cp?
Run the dependency tree command: 'npm ls ep_etherpad-lite'. 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-92hr-gmr6-h8cp",
  "modified" : "2026-08-17T17:49:21Z",
  "published" : "2026-08-17T17:49:21Z",
  "aliases" : [ ],
  "summary" : "Etherpad addressed weak token RNG, login timing, plugin path handling, API request handling",
  "details" : "Fix: PR #7906 (ether/etherpad). A set of medium/low hardening fixes:\n\n- **Weak RNG for tokens (CWE-330):** author/session/readonly IDs were generated with `Math.random()` (client and server). Now use `crypto.getRandomValues`.\n- **Login timing / no failure delay (CWE-208/CWE-307):** the OIDC interaction login used a non-constant-time password compare with no failure delay. Now uses `crypto.timingSafeEqual` plus a uniform failure delay; user lookup is own-property only.\n- **Plugin dependency path handling (CWE-22):** plugin dependency names from package.json were used to build filesystem paths without validation (admin-gated install). Now validated against the npm name grammar.\n- **API parameter pollution (CWE-235):** `/api/2` merged all request headers into the API field set. Now forwards only `authorization`, matching the openapi.ts handler.\n- **Pad-creation side effect:** `API.appendChatMessage` could create arbitrary pads (missing `getPadSafe`). Now requires the pad to exist.\n- **Error info disclosure (CWE-209):** the admin file server echoed filesystem error detail; now returns a generic message.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "ep_etherpad-lite"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.3.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.8.14"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ether/etherpad/security/advisories/GHSA-92hr-gmr6-h8cp"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ether/etherpad/pull/7906"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ether/etherpad/commit/7ea99706483443239bbbc0f2df9aff8ab5de4805"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ether/etherpad"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ether/etherpad/releases/tag/3.3.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-208", "CWE-209", "CWE-22", "CWE-235", "CWE-330" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-17T17:49:21Z",
    "nvd_published_at" : null
  }
}