Vulnerability-Lookup

GHSA-H56G-W4H5-4239

Vulnerability from github – Published: 2026-03-26 21:31 – Updated: 2026-06-03 15:30

Details

thingino-firmware versions up to the firmware-2026-03-16 release contains an unauthenticated os command injection vulnerability in the WiFi captive portal CGI script that allows remote attackers to execute arbitrary commands as root by injecting malicious code through unsanitized HTTP parameter names. Attackers can exploit the eval function in parse_query() and parse_post() functions to achieve remote code execution and perform privileged configuration changes including root password reset and SSH authorized_keys modification, resulting in full persistent device compromise.

Severity

9.8 (Critical)


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

8.7 (High)


                  
                    CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-26213"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-26T19:16:38Z",
    "severity": "HIGH"
  },
  "details": "thingino-firmware versions up to the firmware-2026-03-16 release contains an unauthenticated os command injection vulnerability in the WiFi captive portal CGI script that allows remote attackers to execute arbitrary commands as root by injecting malicious code through unsanitized HTTP parameter names. Attackers can exploit the eval function in parse_query() and parse_post() functions to achieve remote code execution and perform privileged configuration changes including root password reset and SSH authorized_keys modification, resulting in full persistent device compromise.",
  "id": "GHSA-h56g-w4h5-4239",
  "modified": "2026-06-03T15:30:36Z",
  "published": "2026-03-26T21:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26213"
    },
    {
      "type": "WEB",
      "url": "https://github.com/themactep/thingino-firmware/releases/tag/firmware-2026-03-15"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/thingino-firmware-api-cgi-unauthenticated-command-injection-in-captive-portal"
    }
  ],
  "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"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-26213 (GCVE-0-2026-26213)

Vulnerability from cvelistv5 – Published: 2026-03-26 19:00 – Updated: 2026-03-26 19:21

Title

thingino-firmware api.cgi Unauthenticated Command Injection in Captive Portal

Summary

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-78 - Improper neutralization of special elements used in an OS command ('OS command injection')

Assigner

VulnCheck

References

2 references

URL	Tags
https://github.com/themactep/thingino-firmware/re…	product
https://www.vulncheck.com/advisories/thingino-fir…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
themactep	thingino-firmware	Affected: 0 , ≤ firmware-2026-03-16 (custom)

Credits

Azmi Alsarayrah

Show details on NVD website

JSON

To clipboard

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                  },
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                  },
                  {
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                  }
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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.

Action not permitted

GHSA-H56G-W4H5-4239

CVE-2026-26213 (GCVE-0-2026-26213)

Tags

Sightings

Nomenclature