CVE-2016-10626: Mystem3 Remote Code Execution Vulnerability

HIGH
Advisory Identifier: GHSA-747p-jfqv-f43r
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CVSS 8.1
CWE-311
Published
Advisory Summary

CVE-2016-10626 is a HIGH (CVSS 8.1) remote code execution vulnerability (CWE-311: Missing Encryption of Sensitive Data) affecting Mystem3 libraries in the npm ecosystem. The issue involves downloads resources over http in mystem3. Remediation is available by upgrading affected packages to version 1.0.8.

CVE-2016-10626 at a Glance

CVE Identifier CVE-2016-10626
GHSA Identifier GHSA-747p-jfqv-f43r
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-311: Missing Encryption of Sensitive Data
Affected Product Mystem3
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2016-10626

To remediate this vulnerability, upgrade all affected Mystem3 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

mystem3 fixed: 1.0.8 
npm install mystem3@1.0.8
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 mystem3

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2016-10626, inspect your project dependencies using npm:

npm ls mystem3

Analyze the terminal output to locate any version of Mystem3 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.8), your application is affected.

Note: The npm ls mystem3 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-311: Missing Encryption of Sensitive Data, where the product does not encrypt sensitive or critical information before storage or transmission. In Mystem3, 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

Affected versions of `mystem3` insecurely download an executable over an unencrypted HTTP connection. In scenarios where an attacker has a privileged network position, it is possible to intercept the response and replace the executable with a malicious one, resulting in code execution on the system running `mystem3`. ## Recommendation Update to version 1.0.8 or later.

CVE-2016-10626 Affected Mystem3 Versions

1 component(s)
Fixed Versions:
1.0.8
Product / Package Ecosystem Affected Versions Fixed Version
mystem3
npm/mystem3
npm
< 1.0.8
1.0.8

References

NVD — CVE-2016-10626 NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-10626
Security Fix Commit FIX COMMIT
https://github.com/koorchik/node-mystem3/commit/4bd31c0e0110afc327c414d7ebfc2ffe738cbad2
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-747p-jfqv-f43r
www.npmjs.com/advisories/229 WEB
https://www.npmjs.com/advisories/229

Frequently Asked Questions

What is CVE-2016-10626?
CVE-2016-10626 is a security vulnerability in Mystem3 involving Downloads Resources over HTTP in mystem3 under CWE-311: Missing Encryption of Sensitive Data.
Which Mystem3 versions are affected?
Affected versions include releases prior to 1.0.8 across affected packages: mystem3.
What version fixes CVE-2016-10626?
Upgrading to 1.0.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mystem3 affected?
Yes, mystem3 is affected in releases prior to 1.0.8. Upgrade your dependency to 1.0.8 or later.
What is the CVSS score of CVE-2016-10626?
CVE-2016-10626 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2016-10626?
CVE-2016-10626 is classified under CWE-311: Missing Encryption of Sensitive Data (The product does not encrypt sensitive or critical information before storage or transmission.).
How can I check npm dependencies for CVE-2016-10626?
Run the dependency tree command: 'npm ls mystem3'. 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-747p-jfqv-f43r",
  "modified" : "2021-06-11T14:04:48Z",
  "published" : "2019-02-18T23:47:26Z",
  "aliases" : [ "CVE-2016-10626" ],
  "summary" : "Downloads Resources over HTTP in mystem3",
  "details" : "Affected versions of `mystem3` insecurely download an executable over an unencrypted HTTP connection. \n\nIn scenarios where an attacker has a privileged network position, it is possible to intercept the response and replace the executable with a malicious one, resulting in code execution on the system running `mystem3`.\n\n\n## Recommendation\n\nUpdate to version 1.0.8 or later.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "mystem3"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.8"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.0.7"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2016-10626"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/koorchik/node-mystem3/commit/4bd31c0e0110afc327c414d7ebfc2ffe738cbad2"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-747p-jfqv-f43r"
  }, {
    "type" : "WEB",
    "url" : "https://www.npmjs.com/advisories/229"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-311" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:21:20Z",
    "nvd_published_at" : null
  }
}