Vulnerability-Lookup

GHSA-H9GR-58W4-64CQ

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

Details

HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the Git deployer component. GitDeployer.pullRepo() in src/Server/Entity/Deployer/GitDeployer.js executes AppService.exec(git checkout ${this.branch || 'master'}), interpolating the configured branch value directly into a shell command with no escaping. GitDeployer.validate() only rejects a single-quote character in the repo, branch, username, and password fields; shell metacharacters such as ';', '&&', '|', backticks, and '$()' are not filtered. A user able to configure a project's Git deployer settings can set a malicious branch value (e.g. 'master;#') that executes automatically on every subsequent deployer operation (media upload, content save, etc.), since pullRepo() is invoked unconditionally at the start of each such operation. This is related to CVE-2020-6948, which addressed single-quote escaping of the repo, username, and password fields in the same file's git clone invocation; the branch field used in the unquoted git checkout command was not covered by that fix and remains injectable.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-70375"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T07:16:39Z",
    "severity": null
  },
  "details": "HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the Git deployer component. GitDeployer.pullRepo() in src/Server/Entity/Deployer/GitDeployer.js executes AppService.exec(`git checkout ${this.branch || \u0027master\u0027}`), interpolating the configured branch value directly into a shell command with no escaping. GitDeployer.validate() only rejects a single-quote character in the repo, branch, username, and password fields; shell metacharacters such as \u0027;\u0027, \u0027\u0026\u0026\u0027, \u0027|\u0027, backticks, and \u0027$()\u0027 are not filtered. A user able to configure a project\u0027s Git deployer settings can set a malicious branch value (e.g. \u0027master;\u003ccommand\u003e#\u0027) that executes automatically on every subsequent deployer operation (media upload, content save, etc.), since pullRepo() is invoked unconditionally at the start of each such operation. This is related to CVE-2020-6948, which addressed single-quote escaping of the repo, username, and password fields in the same file\u0027s git clone invocation; the branch field used in the unquoted git checkout command was not covered by that fix and remains injectable.",
  "id": "GHSA-h9gr-58w4-64cq",
  "modified": "2026-08-05T09:31:15Z",
  "published": "2026-08-05T09:31:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-70375"
    },
    {
      "type": "WEB",
      "url": "https://cve.turansec.uz/advisories/TRN-B571F773"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HashBrownCMS/hashbrown-cms"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-70375 (GCVE-0-2026-70375)

Vulnerability from cvelistv5 – Published: 2026-08-05 05:46 – Updated: 2026-08-05 12:53

Title

HashBrown CMS: OS Command Injection via Git Deployer Branch Field

Summary

HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the Git deployer component. GitDeployer.pullRepo() in src/Server/Entity/Deployer/GitDeployer.js executes AppService.exec(`git checkout ${this.branch || 'master'}`), interpolating the configured branch value directly into a shell command with no escaping. GitDeployer.validate() only rejects a single-quote character in the repo, branch, username, and password fields; shell metacharacters such as ';', '&&', '|', backticks, and '$()' are not filtered. A user able to configure a project's Git deployer settings can set a malicious branch value (e.g. 'master;<command>#') that executes automatically on every subsequent deployer operation (media upload, content save, etc.), since pullRepo() is invoked unconditionally at the start of each such operation. This is related to CVE-2020-6948, which addressed single-quote escaping of the repo, username, and password fields in the same file's git clone invocation; the branch field used in the unquoted git checkout command was not covered by that fix and remains injectable.

Severity

8.8 (High)


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

CWE

CWE-78 - OS Command Injection

Assigner

TuranSec

References

2 references

URL	Tags
https://github.com/HashBrownCMS/hashbrown-cms
https://cve.turansec.uz/advisories/TRN-B571F773

Impacted products

1 product

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

Credits

Alijonov Alisher

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "hashbrown-cms",
          "programFiles": [
            "src/Server/Entity/Deployer/GitDeployer.js"
          ],
          "repo": "https://github.com/HashBrownCMS/hashbrown-cms",
          "vendor": "HashBrownCMS",
          "versions": [
            {
              "lessThanOrEqual": "1.4.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Alijonov Alisher"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "HashBrown CMS through 1.4.6 contains an OS Command Injection vulnerability (CWE-78) in the Git deployer component. GitDeployer.pullRepo() in src/Server/Entity/Deployer/GitDeployer.js executes AppService.exec(`git checkout ${this.branch || \u0027master\u0027}`), interpolating the configured branch value directly into a shell command with no escaping. GitDeployer.validate() only rejects a single-quote character in the repo, branch, username, and password fields; shell metacharacters such as \u0027;\u0027, \u0027\u0026\u0026\u0027, \u0027|\u0027, backticks, and \u0027$()\u0027 are not filtered. A user able to configure a project\u0027s Git deployer settings can set a malicious branch value (e.g. \u0027master;\u003ccommand\u003e#\u0027) that executes automatically on every subsequent deployer operation (media upload, content save, etc.), since pullRepo() is invoked unconditionally at the start of each such operation. This is related to CVE-2020-6948, which addressed single-quote escaping of the repo, username, and password fields in the same file\u0027s git clone invocation; the branch field used in the unquoted git checkout command was not covered by that fix and remains injectable."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "CWE-78 OS Command Injection",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:53:14.963Z",
        "orgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
        "shortName": "TuranSec"
      },
      "references": [
        {
          "url": "https://github.com/HashBrownCMS/hashbrown-cms"
        },
        {
          "url": "https://cve.turansec.uz/advisories/TRN-B571F773"
        }
      ],
      "title": "HashBrown CMS: OS Command Injection via Git Deployer Branch Field"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c",
    "assignerShortName": "TuranSec",
    "cveId": "CVE-2026-70375",
    "datePublished": "2026-08-05T05:46:26.004Z",
    "dateReserved": "2026-08-04T07:13:07.993Z",
    "dateUpdated": "2026-08-05T12:53:14.963Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Action not permitted

GHSA-H9GR-58W4-64CQ

CVE-2026-70375 (GCVE-0-2026-70375)

Tags

Sightings

Nomenclature