Vulnerability-Lookup

GHSA-F8RJ-8X92-PFP5

Vulnerability from github – Published: 2026-08-05 09:31 – Updated: 2026-08-05 15:32

Details

HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the media upload thumbnail generation routine. Media.generateThumbnail() in src/Server/Entity/Resource/Media.js builds a temporary file path as 'thumbnail' + Path.extname(filename) and passes it, unescaped, into a shell command executed via AppService.exec() ('convert ' + tempFile + ...). The MIME-type filter in getMIMEType() (src/Common/utilities.js) truncates the extracted extension at the first '?' character, while Path.extname() does not, allowing a filename such as 'x.jpg?$(command)' to pass the image-type check while still injecting a shell command substitution into the exec() call. An authenticated user holding the media resource scope can achieve arbitrary OS command execution in the context of the Node.js process via POST /api/{project}/{environment}/media/new.

Severity

8.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-70374"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T07:16:39Z",
    "severity": "HIGH"
  },
  "details": "HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the media upload thumbnail generation routine. Media.generateThumbnail() in src/Server/Entity/Resource/Media.js builds a temporary file path as \u0027thumbnail\u0027 + Path.extname(filename) and passes it, unescaped, into a shell command executed via AppService.exec() (\u0027convert \u0027 + tempFile + ...). The MIME-type filter in getMIMEType() (src/Common/utilities.js) truncates the extracted extension at the first \u0027?\u0027 character, while Path.extname() does not, allowing a filename such as \u0027x.jpg?$(command)\u0027 to pass the image-type check while still injecting a shell command substitution into the exec() call. An authenticated user holding the media resource scope can achieve arbitrary OS command execution in the context of the Node.js process via POST /api/{project}/{environment}/media/new.",
  "id": "GHSA-f8rj-8x92-pfp5",
  "modified": "2026-08-05T15:32:14Z",
  "published": "2026-08-05T09:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70374"
    },
    {
      "type": "WEB",
      "url": "https://cve.turansec.uz/advisories/TRN-11FC0D88"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HashBrownCMS/hashbrown-cms"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-70374 (GCVE-0-2026-70374)

Vulnerability from cvelistv5 – Published: 2026-08-05 05:46 – Updated: 2026-08-10 11:44

Title

HashBrown CMS - OS Command Injection in Media Upload Thumbnail Generation

Summary

HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the media upload thumbnail generation routine. Media.generateThumbnail in src/Server/Entity/Resource/Media.js builds a temporary file path as 'thumbnail' + Path.extname(filename) and passes it, unescaped, into a shell command executed via AppService.exec ('convert ' + tempFile + ...).

Severity

8.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 15:05 UTC

CWE

CWE-78 - OS Command Injection

Assigner

TuranSec

References

2 references

URL	Tags
https://github.com/HashBrownCMS/hashbrown-cms	third-party-advisory
https://cve.turansec.uz/advisories/TRN-11FC0D88	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
HashBrownCMS	hashbrown-cms	Affected: 0 , ≤ 1.4.6 (semver)

Date Public

2026-08-05 05:46

Credits

Alijonov Alisher

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JSON

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                  },
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                "timestamp": "2026-08-05T15:05:00.591389Z",
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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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-F8RJ-8X92-PFP5

CVE-2026-70374 (GCVE-0-2026-70374)

Tags

Sightings

Nomenclature