Vulnerability-Lookup

GHSA-WGV4-95JC-33JM

Vulnerability from github – Published: 2026-11-04 15:32 – Updated: 2026-11-05 18:32

Details

The activestorage gem before 8.1.4.1 for Ruby on Rails, when ImageMagick attachment processing occurs, can allow server read and write operations (e.g., reading secret_key_base) because the ImageMagick analyzer runs when a file is attached, and there is not an ImageMagick security policy to block unintended functionality.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-122006"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1188"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-11-04T15:17:42Z",
    "severity": "CRITICAL"
  },
  "details": "The activestorage gem before 8.1.4.1 for Ruby on Rails, when ImageMagick attachment processing occurs, can allow server read and write operations (e.g., reading secret_key_base) because the ImageMagick analyzer runs when a file is attached, and there is not an ImageMagick security policy to block unintended functionality.",
  "id": "GHSA-wgv4-95jc-33jm",
  "modified": "2026-11-05T18:32:19Z",
  "published": "2026-11-04T15:32:31Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/security/advisories/GHSA-f3w6-w445-fwh9"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-122006"
    },
    {
      "type": "WEB",
      "url": "https://github.com/digitalocean/droplet-1-clicks/pull/488"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rubysec/ruby-advisory-db/pull/1300"
    },
    {
      "type": "WEB",
      "url": "https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-11-04/TIER_2_CVE-2026-122006.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/releases/tag/v8.0.5.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rails/rails/releases/tag/v8.1.4.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-122006 (GCVE-0-2026-122006)

Vulnerability from cvelistv5 – Published: 2026-11-04 14:12 – Updated: 2026-11-05 16:41

Summary

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-1188 - Initialization of a Resource with an Insecure Default

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2263 records in the last 180 days details

References

6 references

URL	Tags
https://github.com/rails/rails/security/advisorie…
https://github.com/rails/rails/releases/tag/v8.1.4.1
https://github.com/rails/rails/releases/tag/v8.0.5.2
https://github.com/digitalocean/droplet-1-clicks/…
https://github.com/rubysec/ruby-advisory-db/pull/1300
https://github.com/alan-turing-institute/cyber-th…

Impacted products

1 product

Vendor	Product	Version
rubyonrails	Active Storage	Affected: 0 , < 8.0.5.2 (custom) Affected: 8.1 , < 8.1.4.1 (custom) cpe:2.3:a:rubyonrails:active_storage:::::::: cpe:2.3:a:rubyonrails:active_storage::::::::

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JSON

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  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-11-05T16:41:32.160Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "url": "https://github.com/digitalocean/droplet-1-clicks/pull/488"
          },
          {
            "url": "https://github.com/rubysec/ruby-advisory-db/pull/1300"
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            "url": "https://github.com/alan-turing-institute/cyber-threat-observatory/blob/main/reports/2026-11-04/TIER_2_CVE-2026-122006.md"
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          "product": "Active Storage",
          "vendor": "rubyonrails",
          "versions": [
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              "status": "affected",
              "version": "0",
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              "status": "affected",
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          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:rubyonrails:active_storage:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "8.1.4.1",
                  "versionStartIncluding": "8.1",
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                }
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      "metrics": [
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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    "datePublished": "2026-11-04T14:12:17.584Z",
    "dateReserved": "2026-11-04T14:12:17.191Z",
    "dateUpdated": "2026-11-05T16:41:32.160Z",
    "state": "PUBLISHED"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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