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GHSA-HCHQ-288F-9HJC

Vulnerability from github – Published: 2026-08-05 12:31 – Updated: 2026-08-05 12:31

Details

IOTSmartHome's gui/login.php checkCookie() function builds an authentication query as SELECT * FROM users WHERE ID='' after base64-decoding the client-supplied lastLogin cookie via safe_decode(), which performs URL-safe base64 decoding with no sanitization of the decoded value before it is concatenated into the SQL string. An unauthenticated attacker can set a lastLogin cookie containing a base64-encoded SQL injection payload (e.g. base64("' OR '1'='1")) to bypass authentication and, via UNION-based injection, extract arbitrary data including user credentials.

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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{
  "affected": [],
  "aliases": [
    "CVE-2026-71231"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-89"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T11:16:25Z",
    "severity": "CRITICAL"
  },
  "details": "IOTSmartHome\u0027s gui/login.php checkCookie() function builds an authentication query as SELECT * FROM users WHERE ID=\u0027\u003cdecoded lastLogin cookie\u003e\u0027 after base64-decoding the client-supplied lastLogin cookie via safe_decode(), which performs URL-safe base64 decoding with no sanitization of the decoded value before it is concatenated into the SQL string. An unauthenticated attacker can set a lastLogin cookie containing a base64-encoded SQL injection payload (e.g. base64(\"\u0027 OR \u00271\u0027=\u00271\")) to bypass authentication and, via UNION-based injection, extract arbitrary data including user credentials.",
  "id": "GHSA-hchq-288f-9hjc",
  "modified": "2026-08-05T12:31:30Z",
  "published": "2026-08-05T12:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-71231"
    },
    {
      "type": "WEB",
      "url": "https://github.com/thebradleysanders/IOTSmartHome"
    }
  ],
  "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-2026-71231 (GCVE-0-2026-71231)

Vulnerability from cvelistv5 – Published: 2026-08-05 10:56 – Updated: 2026-08-05 12:52

Title

IOTSmartHome: Unauthenticated SQL Injection via lastLogin Cookie

Summary

IOTSmartHome's gui/login.php checkCookie() function builds an authentication query as SELECT * FROM users WHERE ID='<decoded lastLogin cookie>' after base64-decoding the client-supplied lastLogin cookie via safe_decode(), which performs URL-safe base64 decoding with no sanitization of the decoded value before it is concatenated into the SQL string. An unauthenticated attacker can set a lastLogin cookie containing a base64-encoded SQL injection payload (e.g. base64("' OR '1'='1")) to bypass authentication and, via UNION-based injection, extract arbitrary data including user credentials.

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-89 - SQL Injection

Assigner

TuranSec

References

1 reference

URL	Tags
https://github.com/thebradleysanders/IOTSmartHome

Impacted products

1 product

Vendor	Product	Version
thebradleysanders	IOTSmartHome	Affected: 0

Credits

Mirdavlatov Mira'zam

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JSON

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        "metrics": [
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                "id": "CVE-2026-71231",
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                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T12:52:43.515445Z",
                "version": "2.0.3"
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          "programFiles": [
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          "lang": "en",
          "value": "IOTSmartHome\u0027s gui/login.php checkCookie() function builds an authentication query as SELECT * FROM users WHERE ID=\u0027\u003cdecoded lastLogin cookie\u003e\u0027 after base64-decoding the client-supplied lastLogin cookie via safe_decode(), which performs URL-safe base64 decoding with no sanitization of the decoded value before it is concatenated into the SQL string. An unauthenticated attacker can set a lastLogin cookie containing a base64-encoded SQL injection payload (e.g. base64(\"\u0027 OR \u00271\u0027=\u00271\")) to bypass authentication and, via UNION-based injection, extract arbitrary data including user credentials."
        }
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      "metrics": [
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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.

Action not permitted

GHSA-HCHQ-288F-9HJC

CVE-2026-71231 (GCVE-0-2026-71231)

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Sightings

Nomenclature